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Beetles and Spiders as Indicators of Forest Recovery on Prince of Wales, Alaska

Jill Stockbridge Biology, MS Entomology Department University of Alaska Museum. Beetles and Spiders as Indicators of Forest Recovery on Prince of Wales, Alaska. Introduction Background Objectives Approach Products Currently. Outline.

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Beetles and Spiders as Indicators of Forest Recovery on Prince of Wales, Alaska

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  1. Jill Stockbridge Biology, MS Entomology Department University of Alaska Museum Beetles and Spiders as Indicators of Forest Recovery on Prince of Wales, Alaska

  2. Introduction • Background • Objectives • Approach • Products • Currently Outline

  3. Invertebrates comprise 95% of all animal species known today • Indicators of ecological change • Global conservation planning - Few Studies Introduction

  4. Forestry practices -Significant human disturbance • Converts old growth stands to: - Clear cuts - Young even-aged stands • Decline of old growth forest specialists Background

  5. Old growth

  6. Clear Cut

  7. Secondary Growth

  8. Logging in the Tongass National Forest • Tongass-Wide Young-Growth Studies (TWYGS) • TWYGS sites in South East Alaska -Prince of Wales Island • Beetles and Spiders -indicators of recovery Background continued…

  9. Objectives Compare indicator species Compare invertebrate to vertebrate Baseline Inventory

  10. Compare Indicator Species 3 Controls (6 replicates each): - Old growth - Clear Cuts - Secondary growth 3 Treatments (2 replicates each): - 14X14’ - 16X16’ - 18X18’ Total: 24 Sites

  11. 14X14’ Treatment

  12. 16X16’ Treatment

  13. 18X18’ Treatment

  14. POW Sites

  15. Collection Methods: - 2 Lindgren Funnels (on loan from USDA) - 4 pairs of pitfall traps - Berlese Funnels • Vegetation surveys • Identify beetles and spiders to species • Statistics: rarefraction curves, Shannon index, and Bray-Curtis index Compare Indicator Species

  16. Drs. Flaherty and Ben-David -University of Wyoming • Deer mice response • Same sites and sampling periods Compare Invertebrate to Vertebrate

  17. Baseline Inventory Coffman Cove Thorne Bay Craig Hydaburg

  18. Collection Methods: - Flight Intercept Trap (FIT) - Sweep netting - Black light - Pollinator bowls - Beating - Carrion - Hand Collecting Baseline Inventory

  19. Identify to species • Help with determinations - beetles Derek Sikes - spiders Joey Slowik - butterflies/moths Jim Kruse • Arctos Database Baseline Inventory

  20. Forestry practices and biodiversity of beetles and spiders • Improve management • Alaska’s arthropod checklist Products

  21. Project began April 2010 • Defend Thesis Fall 2012 • Over 100 species of beetles • Spiders are in queue to be determined by Joey Slowik • New species of Mecoptera? So Far….

  22. Family BoreidaeCaurinussp. Det. Mike Ivey

  23. Lateral View

  24. Funding from Alaska Department of Fish and Game • Dr. Derek Sikes (major advisor) • Joey Slowik • Dr. Jim Kruse • Casey Bickford • Diane Wagner • Dr. Liz Flaherty • Dr. Merav Ben David • Dan the mechanic from POW Acknowledgements

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