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Rare Plants Annual Report 2014

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Rare Plants Annual Report 2014 Rare Plants Annual Report Humboldt Redwood Company LLC. December 1, 2014 Humboldt Redwood Company, LLC Rare Plants Annual Report 2014 TABLE OF CONTENTS EXECUTIVE SUMMARY ......................................................................................................................................... 1 INTRODUCTION ....................................................................................................................................................... 3 Special Status Plants ................................................................................................................................. 3 Table 1. HRC’s Special Status Plant List for the 2014 field season. ........................................... 4 Watch List Plants ...................................................................................................................................... 5 Table 2. HRC’s Watch List Plants for the 2014 field season. ..................................................... 5 Setting ....................................................................................................................................................... 6 METHODS ................................................................................................................................................................... 6 Survey Methods ........................................................................................................................................ 6 Mitigation Methods .................................................................................................................................. 7 Effectiveness Monitoring Methods........................................................................................................... 8 Research Methods..................................................................................................................................... 8 Data Management and Analysis Methods ................................................................................................ 8 Definition of Occurrence ........................................................................................................................ 10 RESULTS ................................................................................................................................................................... 11 Survey Results ........................................................................................................................................ 11 Table 3. 2014 Assessed/surveyed acres by month. .................................................................... 11 Table 4. Summary of 2014 Special Status Plant detections and property-wide totals. ............. 12 Effectiveness Monitoring Results ........................................................................................................... 12 PROPERTY-WIDE CONSULTATIONS ............................................................................................................... 13 CHANGES TO HRC’S SPECIAL STATUS PLANT AND WATCH LISTS ...................................................... 13 ASTRAGALUS AGNICIDUS .................................................................................................................................. 14 Introduction and Summary ..................................................................................................................... 14 Methods .................................................................................................................................................. 15 Survey Methods.................................................................................................................................. 15 Mitigation Methods ............................................................................................................................ 15 Results .................................................................................................................................................... 15 Survey and Mitigation Results ........................................................................................................... 15 Effectiveness Monitoring Results ...................................................................................................... 15 Table 5. 2014 Astragalus agnicidus site revisits. ...................................................................... 16 Discussion ............................................................................................................................................... 16 CAREX ARCTA (NORTHERN CLUSTERED SEDGE) ....................................................................................... 19 Introduction and Summary ..................................................................................................................... 19 Methods .................................................................................................................................................. 19 Survey Methods.................................................................................................................................. 19 Mitigation Methods ............................................................................................................................ 20 Results .................................................................................................................................................... 20 Survey and Mitigation Results ........................................................................................................... 20 Effectiveness Monitoring Results ...................................................................................................... 20 Discussion ............................................................................................................................................... 20 ERYTHRONIUM REVOLUTUM (COAST FAWN LILY) .................................................................................... 21 Introduction and Summary ..................................................................................................................... 21 i Humboldt Redwood Company, LLC Rare Plants Annual Report 2014 Methods .................................................................................................................................................. 22 Survey Methods.................................................................................................................................. 22 Mitigation Methods ............................................................................................................................ 22 Research Methods: Erythronium revolutum Response to Herbicide Application ............................ 22 Results .................................................................................................................................................... 23 Survey and Mitigation Results ........................................................................................................... 23 Effectiveness Monitoring Results ...................................................................................................... 23 Research Results: Erythronium revolutum Response to Herbicide Application ................................ 23 Discussion ............................................................................................................................................... 23 GILIA CAPITATA SSP. PACIFICA (PACIFIC GILIA) ....................................................................................... 24 Introduction and Summary ..................................................................................................................... 24 Methods .................................................................................................................................................. 24 Survey methods .................................................................................................................................. 24 Mitigation methods ............................................................................................................................ 24 Results .................................................................................................................................................... 25 Survey and Mitigation Results ........................................................................................................... 25 Table 6. 2014 Gilia capitata ssp. pacifica locations, numbers, and mitigations. ...................... 25 Effectiveness Monitoring Results ...................................................................................................... 25 Discussion ............................................................................................................................................... 25 MONTIA HOWELLII (HOWELL’S MONTIA) ................................................................................................... 26 Introduction and Summary ..................................................................................................................... 26 Methods .................................................................................................................................................. 27 Mitigation methods ...........................................................................................................................
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