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National Park Service

National Park Service. Balancing Bonneville Cutthroat Trout with Non-native Salmonids in Great Basin National Park Gretchen M. Baker, Neal W. Darby, Tod B. Williams. Great Basin National Park. 10 perennial streams 6 streams in Bonneville cutthroat trout (BCT) habitat. BCT Background.

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National Park Service

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  1. National Park Service Balancing Bonneville Cutthroat Trout with Non-native Salmonids in Great Basin National Park Gretchen M. Baker, Neal W. Darby, Tod B. Williams

  2. Great Basin National Park • 10 perennial streams • 6 streams in Bonneville cutthroat trout (BCT) habitat

  3. BCT Background • Lake Bonneville • Highest extent • Desiccation • BCT Declines • Non-native fish • Logging • Grazing Great Basin National Park

  4. Two-pronged approach • Balancing management • BCT Restoration • Recreational Fishing • 1999 Park Fisheries Management Plan • Objectives

  5. Planning • 2000 BCT Rangewide Conservation Agreement • Signed by states of Utah, Wyoming, Idaho, Nevada • US Fish and Wildlife Service, Bureau of Land Management, National Park Service • US Forest Service • Utah Reclamation Mitigation and Conservation Commission • Support from Trout Unlimited and others

  6. Methods-BCT Reintroduction BCT Reintroduction Steps • Baseline surveys • Pre-treatment surveys • Treatment • Post-treatment effectiveness monitoring • BCT reintroduction • Post-reintroduction effectiveness monitoring

  7. Fishing Streams BCT Stream Other Fish • Strawberry— BCT 2002 • Mill Creek—remnant BCT population found • South Fork Baker—BCT 2005 • Upper Snake Creek—BCT 2004 • South Fork Big Wash—BCT 2000 • Big Wash—BCT 2003 • Pine & Ridge Creeks—pure BCT

  8. Methods-Recreational Fishing • Monitoring • Volunteer recruitment • Inclusion in park planning

  9. Results-BCT • BCT in 17 miles of streams • Good recruitment • Increase in size

  10. South Fork Big Wash--2000

  11. South Fork Big Wash--2002

  12. South Fork Big Wash--2004

  13. Results-BCT • Strawberry Creek- 55% increase in BCT from 2003 to 2004 • Macroinvertebrate recovery

  14. Results-Recreational Fishing • Perception of no fish due to lack of stocking

  15. Baker Population Surveys • Population increasing • Brown trout decreasing in size • Brook and rainbow trout increasing slightly

  16. Lehman Population Surveys • Population increasing • Size of fish fluctuating Caught 9/2/04 340 mm (13 in)

  17. Comparing BCT to non-natives • BCT density greater than other species

  18. Results-Publicity • Brochure • Interviews • Articles

  19. Other results • Volunteers • Thinning • Park planning • Fire rehab

  20. Discussion • Successful park project • Politics • Adaptive Management • Timetable

  21. The Future • Monitor non-native populations • Monitor/manage BCT populations • 5-10 years, BCT sustainable fishery within park

  22. Acknowledgements National Park Service Nevada Department of Wildlife US Forest Service BLM Trout Unlimited

  23. Macroinvertebrate Recovery • Decline of macroinvertebrate abundance one month following the antimycin treatment on Snake Creek and the rotenone treatment on Strawberry Creek.

  24. Macroinvertebrate Recovery • Decline of macroinvertebrate taxa one month following the antimycin treatment on Snake Creek and the rotenone treatment on Strawberry Creek.

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