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North Saskatchewan River Drainage, Fish Sustainability Index Data Gaps Project, 2015

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North Saskatchewan River Drainage, Fish Sustainability Index Data Gaps Project, 2015 North Saskatchewan River Drainage, Fish Sustainability Index Data Gaps Project, 2015 The Alberta Conservation Association is a Delegated Administrative Organization under Alberta’s Wildlife Act. North Saskatchewan River Drainage, Fish Sustainability Index Data Gaps Project, 2015 Mike Rodtka, Chad Judd and Andrew Clough Alberta Conservation Association 101 – 9 Chippewa Road Sherwood Park, Alberta, Canada T8A 6J7 Report Editors PETER AKU KELLEY KISSNER Alberta Conservation Association 50 Tuscany Meadows Cr. NW 101 – 9 Chippewa Rd. Calgary, AB T3L 2T9 Sherwood Park, AB T8A 6J7 Conservation Report Series Type Data ISBN: 978-0-9949118-3-4 Disclaimer: This document is an independent report prepared by Alberta Conservation Association. The authors are solely responsible for the interpretations of data and statements made within this report. Reproduction and Availability: This report and its contents may be reproduced in whole, or in part, provided that this title page is included with such reproduction and/or appropriate acknowledgements are provided to the authors and sponsors of this project. Suggested Citation: Rodtka, M., C. Judd, and A. Clough. 2016. North Saskatchewan River drainage, Fish Sustainability Index data gaps project, 2015. Data Report, D-2016-105, produced by Alberta Conservation Association, Sherwood Park, Alberta, Canada. 17 pp + App. Cover photo credit: David Fairless Digital copies of conservation reports can be obtained from: Alberta Conservation Association 101 – 9 Chippewa Rd. Sherwood Park, AB T8A 6J7 Toll Free: 1-877-969-9091 Tel: (780) 410-1998 Fax: (780) 464-0990 Email: [email protected] Website: www.ab-conservation.com i EXECUTIVE SUMMARY Alberta Environment and Parks Fish Sustainability Index is a standardized process of assessment that provides a landscape-level overview of fish sustainability within the province and enables broad-scale evaluation of management actions and land-use planning. Bull trout (Salvelinus confluentus) is a native sport species classed as Threatened in Alberta and is particularly sensitive to habitat change. In the summer of 2015, Alberta Conservation Association partnered with Sundre Forest Products (SFP) to assess bull trout distribution and abundance in areas of mutual interest to SFP and government land-use planners in SFP’s Forest Management Area. Our objective was to describe the distribution and abundance of bull trout and other fish species in the headwaters of the North Saskatchewan River watershed to address Fish Sustainability Index data deficiencies. Focal areas for the inventory in 2015 were identified in consultation with project partners and included the headwaters of the Baptiste River, Pineneedle Creek and surrounding streams, and Trout Creek. From June 16 to August 17, we visited 87 sites randomly distributed throughout the three focal areas. We monitored stream temperature (every two hours) at four stations in the Trout Creek focal area to assess thermal suitability for bull trout. We sampled 50 sites using backpack electrofishing gear and captured 648 fish including 7 bull trout. The remaining 37 sites were dry. Bull trout were detected at two sites in both the Pineneedle Creek and Trout Creek focal areas. Brook trout (Salvelinus fontinalis) dominated our catch (n = 502), was detected in every area, and was the most widely distributed species overall (detected at 20 sites). Brown trout (Salmo trutta) was the second most abundant species (9 sites; n = 121) but was detected only in the Trout Creek focal area along with longnose dace (Rhinichthys cataractae), mountain whitefish (Prosopium williamsoni), spoonhead sculpin (Cottus ricei) and white sucker (Catostomus commersoni). Our catch of brook trout and brown trout included a wide size range of fish. The spring and early summer of 2015 was notably dry and this undoubtedly impacted the stream habitats we observed and should be considered when interpreting the results of our habitat assessment. Streams in the Pineneedle Creek focal area exhibited relatively low water conductivities, which may have diminished the efficiency of our electrofishing gear. Stream temperature monitoring of the Trout Creek focal area indicated that the ii headwaters provided highly suitable thermal habitat for bull trout in the summer of 2015. Our study provides land-use managers with fish species distribution and abundance information necessary to balance the diverse values of the land base upon which they operate and to evaluate bull trout status in the North Saskatchewan River watershed. Key words: Alberta, North Saskatchewan River watershed, bull trout, distribution, abundance. iii ACKNOWLEDGEMENTS We thank Jessica Reilly of Alberta Environment and Parks for her assistance with project design and development. We greatly appreciate the logistical and financial support our project received from Sundre Forest Products, a Division of West Fraser Mills Ltd. Kelsey Kure (Sundre Forest Products) assisted with project development and delivery. Alberta Conservation Association employee Zachary Spence assisted with collecting and summarizing the data. Editorial comments by Mandy Couve (Alberta Conservation Association) greatly improved the final report. iv TABLE OF CONTENTS EXECUTIVE SUMMARY ........................................................................................................... ii ACKNOWLEDGEMENTS ........................................................................................................ iv TABLE OF CONTENTS ............................................................................................................. v LIST OF FIGURES ...................................................................................................................... vi LIST OF TABLES ....................................................................................................................... vii LIST OF APPENDICES .......................................................................................................... viii 1.0 INTRODUCTION .......................................................................................................... 1 2.0 STUDY AREA ................................................................................................................. 2 3.0 MATERIALS AND METHODS ................................................................................... 4 3.1 Fish distribution and abundance .......................................................................... 4 3.2 Stream habitat measurement ................................................................................. 5 4.0 RESULTS ......................................................................................................................... 6 4.1 Fish distribution and abundance .......................................................................... 6 4.2 Stream habitat measurement ............................................................................... 13 4.3 Summary ................................................................................................................ 14 5.0 LITERATURE CITED .................................................................................................. 16 6.0 APPENDICES ............................................................................................................... 18 v LIST OF FIGURES Figure 1. Headwaters of the North Saskatchewan River watershed and 2015 fisheries inventory focal areas. ............................................................................................. 3 Figure 2. Location of stream temperature monitoring stations in the Trout Creek focal area, June to August 2015. ..................................................................................... 7 Figure 3. Electrofishing site identification and distribution of fish in the Baptiste River focal area captured using backpack electrofishing, July 27 to August 17, 2015 ................................................................................................................................... 8 Figure 4. Electrofishing site identification and distribution of fish in the Pineneedle Creek focal area captured using backpack electrofishing, June 16 to July 8, 2015. .......................................................................................................................... 9 Figure 5. Electrofishing site identification and distribution of fish in the Trout Creek focal area captured using backpack electrofishing, July 14 to 25, 2015. ....... 10 vi LIST OF TABLES Table 1. Sampling effort at three focal areas in the North Saskatchewan River watershed, June 16 to August 17, 2015. ............................................................... 5 Table 2. Catch information of fish species detected using backpack electrofishing gear in the North Saskatchewan River watershed, June 16 to August 17, 2015 ... 11 Table 3. Relative abundance of fish species detected using backpack electrofishing gear in the North Saskatchewan River watershed, June 16 to August 17, 2015. ................................................................................................................................. 12 Table 4. Size distribution of fish captured using backpack electrofishing gear in the North Saskatchewan River watershed, June 16 to August 17, 2015. ............. 12 Table 5. Summary of stream habitat at sites electrofished in the North Saskatchewan River watershed, June 16 to August 17, 2015. .................................................. 13 Table 6.
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