   

Prepared for: Columbia Basin Fish and Wildlife Compensation Program And ForestEthics      

Table of Contents  

      

 

 

   

      

 

     

              

  

EXECUTIVE SUMMARY                                                     

  

                                                

  

      

  

INTRODUCTION

OLD GROWTH FORESTS IN THE INLAND TEMPERATE RAINFOREST                        

LANDSCAPE HISTORY                  

  

RARE OR EXCEPTIONAL OLD GROWTH                              Assuming a stand-replacing   disturbance interval of 350 years.  0.80

 0.70

 0.60  0.50   0.40  0.30

 landbase the of Proportion 0.20

 0.10

 0.00

0 0 0  00 100 2 300 400 500 600 70 800 90 000  1 1100 120 1300   Age of Forest  

    1 These estimates are based on the “exponential” equation: % stands greater than age t = exp(-(t/b)), where b is the average stand replacing disturbance interval (Ministry of Forests and Ministry of Environment, Lands and Parks 1995).

  

       

MANAGEMENT CONTEXT                       

OBJECTIVES  •     •  •   •  

 2 For reasons of confidentiality the areas of private land in this report are identified by number rather than by owner or location. Details of ownership are summarised in Appendix X which is unavailable to the general public.

  

STUDY AREA    INCOMAPPLEUX                              TROUT LAKE             

  

                            

METHODS

SITE SELECTION                  

  

               •  •  •  •  • 

  

SAMPLING METHODS                         

  

      

ANALYSIS METHODS         AGE ASSESSMENTS                               

  

OLD GROWTH INDICES                                        OLD GROWTH RATINGS     

RESULTS  

  

    As a comparison of attributes.                As a description and summary of information for each stand sampled in this project   As a summary of overall rankings  

A) A COMPARISON OF ATTRIBUTES      

I) COMPARISON WITHIN PLOTS SAMPLED FOR THIS STUDY   

  

90 Full Index

80 Full + Max Snag Minimal

70 No small trees

60

50

40 Percent Score Percent

30

20

10

0

x a k k k x d d x a a u er h m o o yd m o w yd yd u h h v p o o o o o o o o oy oy p p ea com leu l r r B co r leu B B B B l l n p Sil a Inc b b In b arl p ple a a y Marlow u e e le M p u u ard N I Scott Cr a N ttl ttl N a L map att map ea d er co Rub Ba Ba B co r p n arde n arde a L IncomaL L Up W I W I W

Figure 1. Relative ranking of stands based on different versions of the old-growth index.             

II) COMPARISON OF STANDS SAMPLED IN 2001 AND IN THIS PROJECT   

  

100 2005 CB Full Index 2001 Full Index 90

80

70

60

50

40 Percent Score 30

20

10

0 020040060080010001200 Age

Figure 2. Comparison of 2005 data from this study with that collected in 2001 in the larger ICHwk1 study.                

III) DENSITY OF LARGE TREES       3 Note that this does not mean that trees >200cm dbh do not exist in these stands. Rather, that sampling did not detect them. For example, the site called Thor (sampled in 2001 in the Pingston Valley) had the occasional tree over 200 cm dbh, but these did not fall into sample plots. While lack of detection is not surprising for rare attributes, we do not expect trees >200 cm dbh to be found at most sites.

  

 

40

35 Mean Densi t y >200 cm Max dens it y >200 30

25

20

15 SPH >200 cm DBH cm >200 SPH

10

5

0

k n y w o k w Cr ok ok lo ar um er o u o ar P ro arlo leu e eu br M Beat Libert eu leu M pl Scott tle ap oratori app m Bat Battlebro M Ruby Silv Battleb Inco Incomappl ncom t Incomapp h t I ort Wes North N North IncomapplWes

Figure 3. Mean and maximum density of very large (>200cm DBH) trees. Sixteen plots had trees greater than 200cm DBH, including four sites sampled in 2001 (Park, Liberty, Moratorium outside of the study area, and Beaton in the lower Incomappleux); 26 plots did not have trees of this size (not shown).

B) STAND AND AREA DESCRIPTIONS          

INCOMAPPLEUX – BATTLE BROOK     

  

                  Table 1. Summary data on tree ages found in Battle Brook. Full data from all trees are found in Appendix 3. Site No Area Name Sp Max of Max of “Max Max of “Min Estimated “Most Likely Age” Estimated Age” Age” 1.1 Battle Brook Cw 879 1155 686 Hw 299 354 307 1.2 Battle Brook Cw 765 1045 630 Hw 153 156 155 1.3 Battle Brook Cw 878 836 696 Hw 271 287 256

Landscape Level Rating: Exceptional Stand Level Rating: Very High to Exceptional Summary:               

  

INCOMAPPLEUX – NORTH INCOMAPPLEUX                              Table 2. Summary data on tree ages found in North Incomappleux. Full data from all trees are found in Appendix 3. Site No Area Name Sp Max of Max of “Max Estimated Max of “Min Estimated “Most Likely Age” Age” Age” 7.1 North Incomappleux Cw 726 857 585 Hw 473 596 373 7.2 North Incomappleux Cw 1269 1269 940 7.3 North Incomappleux Cw 1018 1562 776 Hw 328 371 310

Landscape Level Rating: Exceptional Stand Level Rating: Exceptional to V. High Summary:    

  

              

WEST INCOMAPPLEUX       CwHw 9517-17)                     Table 3. Summary data on tree ages found in West Incomappleux. Full data from all trees are found in Appendix 3. Site No Area Name Sp Max of Max of “Max Estimated Max of “Min Estimated “Most Likely Age” Age” Age” 6.1 West Incomappleux Cw 935 1010 734 6.2 West Incomappleux Cw 385 508 370

  

6.3 West Incomappleux Cw 437 467 369

Landscape Level Rating: Exceptional Stand Level Rating: High to Exceptional Summary:                          

INCOMAPPLEUX – BOYD CREEK               

  

       Table 4. Summary data on tree ages found in Boyd Creek. Full data from all trees are found in Appendix 3. Site No Area Name Sp Max of Max of “Max Max of “Min Estimated “Most Likely Age” Estimated Age” Age” 5.1 Boyd Cw 645 766 508 Hw 523 535 420 Sx 224 224 219 5.2 Boyd Cw 573 855 480 Hw 531 574 465 5.3 Boyd Cw 725 984 601 Hw 430 497 354 5.4 Boyd Cw 696 773 549 5.5 Boyd Cw 405 483 409 Hw 444 473 402

Landscape Level Rating: Very High Stand Level Rating: High to Very High Summary:                   

  

INCOMAPPLEUX - RUBY SILVER                  Table 5. Summary data on tree ages found in Ruby Silver. Full data from all trees are found in Appendix 3. Site No Area Name Sp Max of Max of “Max Estimated Max of “Min Estimated “Most Likely Age” Age” Age” 8.1 Ruby Silver Cw 896 951 861

Landscape Level Rating: Very High Stand Level Rating: Exceptional Summary:               

INCOMAPPLEUX – SCOTT CREEK    

  

         Table 6. Summary data on tree ages found in North Incomappleux. Full data from all trees are found in Appendix 3. Site No Area Sp Max of Max of “Max Estimated Max of “Min Estimated Name “Most Likely Age” Age” Age” 9.1 Scott Cr Cw 990 1115 748

Landscape Level Rating: Very High Stand Level Rating: Exceptional Summary:                 

TROUT LAKE – PRIVATE LAND #1 AND #2          

  

                      Site No Area Name Sp Max of Max of “Max Estimated Max of “Min Estimated “Most Likely Age” Age” Age” 2.1 Trout-PL-1 Cw 1050 1399 795 2.2 Trout-PL-1 Cw 1023 1057 770

Landscape Level Rating: Exceptional Stand Level Rating: Very High to Exceptional Summary:                   4 We have used site series classifications for the ICHwk1 here, but if classified under the ICHmw2, the Trout PL-1 sample area would be classified primarily as the ICHmw2/06 site series.

  

      

TROUT LAKE – PL-3          

TROUT LAKE – LARDEAU ALPHA                       Table 8. Summary data on tree ages found in Lardeau Alpha site. Full data from all trees are found in Appendix 3. Site No Area Name Sp Max of Max of “Max Max of “Min Estimated “Most Likely Age” Estimated Age” Age” 3.1 Lardeau Alpha Cw 736 1022 580

  

Site No Area Name Sp Max of Max of “Max Max of “Min Estimated “Most Likely Age” Estimated Age” Age” 3.2 Lardeau Alpha Hw 636 840 636 3.3 Lardeau Alpha Cw 311 350 331 Hw 438 985 349

Landscape Level Rating: Very High Stand Level Rating: High to Very High Summary:              

TROUT LAKE – UPPER LARDEAU           Table 9. Summary data on tree ages found in Upper Lardeau. Full data from all trees are found in Appendix 3. Site No Area Name Sp Max of Max of “Max Estimated Max of “Min Estimated “Most Likely Age” Age” Age” 4.1 Upper Lardeau Cw 472 654 430 Hw 466 519 405

  

Landscape Level Rating: High Stand Level Rating: High Summary:           

ADDITIONAL SITES “VISUALLY ASSESSED” IN THIS STUDY Incomappleux Log Jam            End of the Road       Alpha Junction     Low and moderate sites:   

ADDITIONAL SITES SAMPLED BY HOLT AND MACKILLOP (2002) IN THE TROUT LAKE AND INCOMAPPLEUX AREAS   Mehninick Creek   

  

          Alpha            Snow         Other Sites      

ADDITIONAL SITES SAMPLED FOR RARE LICHENS BY ARSENAULT (2004) IN THE UPPER INCOMAPPLEUX Upper Incomappleux    

  

Figure 4. Approximate locations of sampling by Goward and Arsenault for rare lichens (from Arsenault 2004). See associated Table 10.

      

Table 10. Locations, Ecosystem Types, Age-Class and Elevation for sites sampled by Arsenault and Goward (Arsenault 2004) in the upper Incomappleux.

  

DISCUSSION       

SUMMARY OF STAND AND LANDSCAPE LEVEL OLD-GROWTH RATINGS FOR AREAS SAMPLED WITHIN THE TROUT LAKE AND INCOMAPPLEUX AREAS              

  Table 11. Summary of old growth ratings for stands sampled in this and previous studies in the Incomappleux and Trout Lake areas. Land Overal Stand and Site Mapsheet Stand-Level Old Manage- Area name Project Landscape Level Comments No. and Polygon Growth Rating * ment Rating Status Upper Incomappleux K093 18 CH 1.1 V. High P & T 9515-17 Part of large contiguous area adjacent to Glacier NP. Known to contain rare Sampled K093 18 CH Battle Brook 1.2 Exceptional P & T Exceptional oceanic lichens and plants. Overall rating is based on combined stand and 2005 9515-17 landscape level attributes. K093 18 CH 1.3 V. High P & T 9515-17 K093 45 CH 6.1 Exceptional P & T 9417-15 Sampled K093 43 CH West 6.2 High P & T Part of large contiguous area adjacent to Glacier NP. Overall rating is based on 2005 94 0-15 Exceptional Incomappleux combined stand and landscape level attributes. K093 28 6.3 CH(Pw) 95 0- V. High P & T 17 K093 31 HC 7.1 V. High P & T 84 0-17 Part of large contiguous area adjacent to Glacier NP. Overall rating is based on North Sampled K093 17 CH 7.2 Exceptional P & T Exceptional combined stand and landscape level attributes. Known to contain at-risk plants Incomappleux 2005 8515-21 and potentially rare lichens. K093 5 CH 7.3 Exceptional P & T 94 0-15 Visually Incomappleux K093 29 CH Exceptional overall rating because of part of the combined upper Incomappleux 10.1 Assessed V. High P & T Exceptional Log Jam 9517-14 sites. 2005 Visually K093 490 End of the Measured Cw with 332 cm DBH. Exceptional overall rating because of proximity Assessed CH(Pw) 95 0- Exceptional P & T Exceptional Road to other upper Incomappleux sites. 2005 17 

Land Overal Stand and Site Mapsheet Stand-Level Old Manage- Area name Project Landscape Level Comments No. and Polygon Growth Rating * ment Rating Status

Arsenault Plot N003 147 17 V. High P & T 1/147 CH9516-19

Arsenault Plot N003 147 18 V. High P & T 2/147 CH9516-19 Arsenault Plot N003 144 19 Exceptional P & T 3/144 HC9517-18 Overall rating is based on landscape position – part of upper Incomappleux Arsenault Plot Arsenault N003 145 stands. 20 Exceptional P & T Exceptional 4/145 2004 HC9417-13 Arsenault 5/18 overlaps with Battle Brook plot 1, while Arsenault 8/18 overlaps Arsenault Plot K093 18 with Battle Brook plots 2 and 3. 21 V. High P & T 5/18 CH9515-17 Arsenault Plot K093 19 22 High P & T 6/19 CH8416-17 Arsenault Plot K093 19 23 High P & T 7/19 CH8416-17 Arsenault Plot K093 18 24 High P & T 8/18 CH9515-17 Arsenault Plot Arsenault K092 199 25 V. High P & T 9/199 2004 CH8316-13 V. High Overall rating is based on proximity to other upper Incomappleux stands. Arsenault Plot K092 199 26 V. High P & T 10/199 CH8316-13 Mid Incomappleux K083 309 5.1 High P & T SCH 85 0-24 K083 309 5.2 V. High P & T SCH 85 0-24 Higher elevation, drier site. V. High overall rating is based on potential Sampled K083 309 Boyd 5.3 High P & T V. High connectivity to the Westfall, potential Mountain Caribou recovery habitat, and 2005 SCH 85 0-24 relative intactness. K083 306 5.4 High P & T S(C) 85 0-24

  

Land Overal Stand and Site Mapsheet Stand-Level Old Manage- Area name Project Landscape Level Comments No. and Polygon Growth Rating * ment Rating Status K083 261 5.5 High P & T HCS 84 0-15 K082 397 C Remnant area in mid Incomappleux. Very High rating is due to small area, but Ruby Silver 8.1 Exceptional P & T V. High 9518-19 rare in the landscape. Sampled K082 465 Remnant area in mid Incomappleux. Very High rating is due to small area, but Scott Cr 9.1 Exceptional P & T V. High 2005 CAc 84 0-17 rare in the landscape. Mehninick K082 457 CH Was Exceptional Was exceptional structure when sampled in 2001 – however, the stand was 11 P & T Low Creek (Beaton) 9516-19 but recently logged logged in early 2005 (low overall rating). Sampled K082 368 Fish 14 Moderate P & T Moderate 2001 H(CS) 9315-9 Sampled K063 263 Last 15 2001 FH(C) 7529- Moderate P & T Moderate 25 Trout Lake Sampled K063 11 CH Private 2.1 Exceptional Private Land 2005 9515-19 land Exceptional overall rating is based on adjacency to high value wetland / riparian Exceptional #1 K063 11 CH Private area and rarity of stand structure in the landscape. 2.2 V. High 9515-19 land Ferguson / Upper Lardeau K063 755 CH Arrow 3.1 V. High 95 0-17 TSA Lardeau Alpha Sampled K063 755 CH Arrow Adjacent to Lardeau river, within a heavily impacted landscape. Overall rating is 3.2 V. High V. High 2005 95 0-17 TSA based on riparian and connectivity values. K063 755 CH Arrow 3.3 High 95 0-17 TSA Sampled K064 232 CH Arrow Higher elevation, transitional to ESSF, mesic site – not expected to have the Upper Lardeau 4.1 High High 2005 84 0-17 TSA same attributes as wetter sites. Sampled K063 610 CH Arrow Alpha 13 Exceptional V. High 2001 8517-20 TSA Sampled K063 607 Arrow Snow 12 Exceptional V. High 2001 CH8416-15 TSA

  

Land Overal Stand and Site Mapsheet Stand-Level Old Manage- Area name Project Landscape Level Comments No. and Polygon Growth Rating * ment Rating Status Visually K063 607 Was V.High; but Arrow Part of the Snow polygon that was sampled by Holt and MacKillop (2002). This Snow Logged Assessed Low CH8416-15 recently logged TSA portion only was logged since sampling (and now has an overall low rating) 2005 Visually K063 439 HC Arrow Alpha Junction Assessed High V. High Near Alpha and Lardeau Alpha sites. 850-20 TSA 2005 

  MOUNTAIN CARIBOU                

RARE PLANTS AND LICHEN               

          5 http://wlapwww.gov.bc.ca/wld/documents/caribou.pdf and http://wlapwww.gov.bc.ca/wld/documents/mtcaribou_rcvrystrat02.pdf 6 To our knowledge, no systematic sampling has occurred in areas within the Trout Lake / Incomappleux region except in isolated areas within the Incomappleux as described. We therefore do not know whether rare species exists within some of the other stands identfied as structurally exceptional in this study. 

                        

                        

  

                      

CONSERVATION OPPORTUNITIES        

INCOMAPPLEUX             

  

                                    

TROUT LAKE- LARDEAU           

  

    

TROUT- PL-1 AND PL-2               

MEETING CBFWCP MITIGATION NEEDS         

REFERENCES            

  

                                                   

  

    

  

APPENDIX 1. MAPS AND PHOTOGRAPHS.

  North Incomappleux 082N003 Holt and MacKillop 082N002 1.1 Sampled 2002 Incomappleux 7.2 Battlebrook Log Jam 1.2 Sampled 2005 McDougal Creek 082K094 1.3 7.1 End of the Road Visually Assessed 2005 Arsenault R

6.3 E Sampled 2004 6.2 6.1 V

West Incomappleux I R 082K093

082K092

Houston Pass

B o y d

X

U

Ruby Silver E 8.1 L 5.5 5.15.4 P 5.3 082K083C P 5.2 r A e 082K082 Boyd e M k CBFWCP Boundary O Map Extent Mapsheets: Fish C - 082K.082 9.1 - 082K.083 N - 082K.092

I - 082K.093 - 082N.003 Scott Creek

Mehninick Creek (Beaton) k e 082K073 Map 1A: Potential Endangered Forests - Sampling Locations e r 082K072 Kilometers Columbia Basin Fish and Wildlife Compensation Program 0120.5 C w

k Holta and MacKillop

M Sampled 2002 Sampled 2005 C Visually082K074 Assessed 2005

private land #2 r Arsenault 082K073 Sampled 2004 082K072 Spine Alpha Junction private land #1 UpperMountain Lardeau Great Northern Alpha

C Mountain r e G e 2.22.1 Ferguson 4.1 k 3.3 3.2 L a r d e a u C r e 082K064 Staubert Lake Snow Logged 082K063 Trout Lake Snow Lardeau Alpha

082K062

r C k CBFWCP Boundary e Last Map Extent n e o r Mapsheets: - 082K.062 t C - 082K.063 a T - 082K.064 e r B o u t 082K054 082K053 Map 1B: e Trout Potential Endangered Forests082K052 - Sampling Locations i

Kilometers $MAPS/endangered_forest/maps2005/holt_mackillop_sampledB.eps Columbia Basin Fish and Wildlife Compensationk Program Mountain 0120.5 w:\\srm\nel\workarea\cbfwcp\endangeredforest\2005\holt_mackillop_sampledB.mxd

l L North Incomappleux 082N003 Endangered Forests Surveyed 082N002 Incomappleux Predicted Endangered Forest Stands Log Jam Battlebrook McDougal Creek 082K094 End of the Road

R

E

V

West Incomappleux I R 082K093

082K092

Houston Pass

B o y d

X

U

Ruby Silver E

L

P 082K083C P r A ee 082K082 Boyd M k CBFWCP Boundary O Map Extent Mapsheets: Fish C - 082K.082 - 082K.083 N - 082K.092

I - 082K.093 - 082N.003 Scott Creek

Mehninick Creek (Beaton) k e e 082K073 Map 2A: Potential Endangered Forests - Landscape Level Distribution r 082K072 Kilometers Columbia Basin Fish and Wildlife Compensation Program 00.81.60.4 C w

k Predicteda Endangered Forest Stands

ArsenaultM Endangered Forests Surveyed C 082K074

r Private Land #2 082K073

082K072 Spine Alpha Junction Private Land #1 UpperMountain Lardeau Great Northern Alpha

C Mountain r e G e Ferguson k L a r d e a u C r e 082K064 Staubert Lake Snow Logged 082K063 Trout Lake Snow Lardeau Alpha

082K062

r C k CBFWCP Boundary e Last Map Extent n e o r Mapsheets: - 082K.062 t C - 082K.063 a T - 082K.064 e r B o u t 082K054 082K053

Map 2B: Potential Endangerede Forests - Landscape level distribution Trout 082K052 i

$MAPS/endangered_forest/maps2005/holt_mackillop_sampledB.eps Columbia Basin Fish and Wildlife Compensationk Program MountainKilometers 0120.5 w:\\srm\nel\workarea\cbfwcp\endangeredforest\2005\holt_mackillop_sampledB.mxd

l L North Incomappleux 082N003 Exceptional 082N002

Incomappleux V. High Log Jam Battlebrook McDougal Creek High 082K094 End of the Road Moderate

R Low

E Harvested

V

West Incomappleux I R 082K093

082K092

Houston Pass

B o y d

X

U

Ruby Silver E

L

P 082K083C P r A e 082K082 Boyd e M k CBFWCP Boundary O Map Extent Mapsheets: Fish C - 082K.082 - 082K.083 N - 082K.092

I - 082K.093 - 082N.003 Scott Creek

Mehninick Creek (Beaton) k Map 3A: Potential Endangered Forests - e e 082K073 Combined Stand and Landscape Level Ratings of Sampled Areasr 082K072 Kilometers Columbia Basin Fish and Wildlife Compensation Program 0120.5 C w

k a Harvested M Exceptional V. High C 082K074 High

r Private Land #2 082K073 Moderate Low 082K072 Spine Alpha Junction Private Land #1 UpperMountain Lardeau Great Northern Alpha

C Mountain r e G e Ferguson k L a r d e a u C r e 082K064 Staubert Lake Snow Logged 082K063 Trout Lake Snow Lardeau Alpha

082K062

r C k CBFWCP Boundary e Last Map Extent n e o r Mapsheets: - 082K.062 t C - 082K.063 a T - 082K.064 e r B o u t 082K054 082K053 Map 3B: e Trout Potential Endangered Forests082K052 - Combined Stand and Landscape Leveli Ratings of Sampled Areas

$MAPS/endangered_forest/maps2005/holt_mackillop_sampledB.eps k Kilometers Mountain Columbia Basin Fish and Wildlife Compensation Program 0120.5 w:\\srm\nel\workarea\cbfwcp\endangeredforest\2005\holt_mackillop_sampledB.mxd

l L Photograph 1. Overview of the Trout Lake Private Land #1 (and #2), with adjacent wetlands, riparian areas and Highway (R. F. Holt).

Photograph 2. Wetlands adjacent to the Trout Lake Private Land # 1 and 2 Areas (R.F. Holt). Photograph 3. North Incomappleux Area. Cedar trees greater than 3m dbh (J. Dulisse).

Photograph 4. Battlebrook Area (J. Dulisse). Photograph 5. Boyd Creek (J. Dulisse). Photograph 6. Counting rings at Beaton (previously sampled in 2001 and described as exceptional old-growth at that time). J. Dulisse

Photograph 7. Evidence of high-grading from earlier this century, at Ruby Silver Creek. J. Dulisse. 

APPENDIX 2. DETAILED METHODS USED TO DETERMINE BREAST HEIGHT AGE ESTIMATES FOR SAMPLED TREES     7              

       8                 

 7 Growth and Yield Biometrician, British Columbia Ministry of Forests, Research Branch. 8 Dendrochronologist, Univeristy of British Columbia.

  

9            

 9 Ring counts on stumps can provide a clearer picture of growth rate histories and often indicate growth patterns near the pith (where rings are often visible, but too decayed to capture in an increment bore sample).

  

APPENDIX 3. TREE AGE DATA

Site No Area Name Sp Max of Tot Most Max of Tot Max Est Max of Tot Min Est Likely Age Age Age 1.1 Battle Brook Cw 879 1155 686 Hw 299 354 307 1.2 Battle Brook Cw 765 1045 630 Hw 153 156 155 1.3 Battle Brook Cw 878 836 696 Hw 271 287 256 2.1 Marlow Cw 1050 1399 795 2.2 Marlow Cw 1023 1057 770 3.1 Lardeau Alpha Cw 736 1022 580 3.2 Lardeau Alpha Hw 636 840 636 3.3 Lardeau Alpha Cw 311 350 331 Hw 438 985 349 4.1 Upper Lardeau Cw 472 654 430 Hw 466 519 405 5.1 Boyd Cw 645 766 508 Hw 523 535 420 Sx 224 224 219 5.2 Boyd Cw 573 855 480 Hw 531 574 465 5.3 Boyd Cw 725 984 601 Hw 430 497 354 5.4 Boyd Cw 696 773 549 5.5 Boyd Cw 405 483 409 Hw 444 473 402 6.1 West Incomappleux Cw 935 1010 734 6.2 West Incomappleux Cw 385 508 370 6.3 West Incomappleux Cw 437 467 369 7.1 North Incomappleux Cw 726 857 585 Hw 473 596 373 7.2 North Incomappleux Cw 1269 1269 940 7.3 North Incomappleux Cw 1018 1562 776 Hw 328 371 310 8.1 Ruby Silver Cw 896 951 861 9.1 Scott Cr Cw 990 1115 748 Grand 1269 1562 940 Total

  

APPENDIX 4. INDEX OF OLD-GROWTHNESS (HOLT AND MACKILLOP 2002). ICHwk1 – Wet Stands (Site Series 05-06)*

Site Series______Slope______Aspect ______Elevation ______Size (ha) ______

Stand Name ______Polygon ______Map Sheet ______FC Age ______

Threshold for Score = 0 for Low; 1 Measured Structural Attribute** Threshold Very High for High; 2 for Very Value for High Structure Structure High

Mean Stand Age >243 >408 Trees17.5-30 (sph) <109 <40 Trees30-50 (sph) <123 N/A Trees50-75 (sph) <72 <47 Trees>100 (sph) >13 >35 Number of Trees>75cm with Dead or Broken Tops (sph) >9 >31 Largest Tree (cm) >111 >150 Largest Snag (cm) >81 >103 Snags_17.5-30 (sph) <36 <6 Snags_30-50 (sph) <21 <9 Snags_75-100 (sph) >6 N/A Snags_100 (sph) N/A >5 Average Canopy Lichen Loading** >1.9 N/A %cover layer A: trees >10m tall <30 <19 Sum: Landscape Considerations/ notes

•  • 

 