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Key Features Of Early Seral Habitats For Wildlife


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Key Features Of Early Seral Habitats For Wildlife

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Key Features Of Early Seral Habitats For Wildlife

  1. 1. Key Features of Early Seral Habitats for Wildlife Joan Hagar USGS-FRESC Matt Lee
  2. 2. Matt Lee Matt Lee Matt Lee
  3. 3. Following Natural Disturbance ... <ul><li>Structure </li></ul><ul><ul><li>Legacy trees and snags </li></ul></ul><ul><ul><li>Open (low tree density) </li></ul></ul><ul><ul><li>Large wood </li></ul></ul><ul><li>Composition </li></ul><ul><ul><li>Herbs and Grasses </li></ul></ul><ul><ul><li>Shrubs </li></ul></ul><ul><ul><li>Deciduous hardwoods </li></ul></ul>Bob Altman
  4. 4. Species associated with closed canopy forest also use early seral habitats… IF appropriate habitat elements are available
  5. 5. Species that specialize on conifers Red Tree Vole Hemlock Looper Red Crossbill
  6. 6. Many conifer forest associates rely on diversity of plants Spruce Grouse
  7. 7. Elements of Quality Early Seral Habitat
  8. 8. Residual trees and snags Matt Lee D. Vesely
  9. 9. Cavity-nesters in burned forests <ul><li>Fire-killed snags are important resource for foraging and nesting </li></ul><ul><li>Many species respond negatively to salvage logging </li></ul>
  10. 10. Bob Altman
  11. 11. Early Seral Habitat for Reptiles <ul><li>Basking </li></ul><ul><li>Prey </li></ul>D. Vesely
  12. 12. Dead Wood as Refugia D. Vesely
  13. 13. Plant Diversity = Food Resources <ul><li>Foliage </li></ul><ul><li>Nectar </li></ul><ul><li>Fruits </li></ul><ul><li>Seeds </li></ul>
  14. 14. Plant Diversity: foundation of food webs
  15. 15. Matt Lee
  16. 16. Arthropods <ul><li>Insect diversity correlated with plant diversity </li></ul><ul><li>Deciduous species support more insects </li></ul><ul><li>Influence of deciduous litter on soil food webs? </li></ul>
  17. 17. Peter LaTourrette
  18. 18. Importance of Early Seral Broadleaf Communities to Avian Biodiversity
  19. 19. 30 Year Trend for Swainson’s Thrush from Tillamook S.F. BBS Route
  20. 20. Creating Early Seral Habitat?
  21. 24. Effects of Conifer-centric Forest Management on Early Seral Habitat <ul><li>Fewer residual structures </li></ul><ul><li>Altered vegetation composition </li></ul><ul><ul><li>Alters patterns of food abundance </li></ul></ul><ul><ul><li>Reduces diversity of food resources </li></ul></ul><ul><ul><li>Alters food webs </li></ul></ul><ul><li>Reduced temporal span </li></ul>
  22. 25. Consequences of reduced temporal span of early seral habitats <ul><li>Limit on shrub size and age </li></ul><ul><li>Shortens duration of shrubby habitat </li></ul><ul><li>Reduced persistence of shrubs into mid-aged forests </li></ul>
  23. 26. Restoration of Late Seral Forest <ul><li>Emphasizes large trees </li></ul><ul><li>Size limit on harvest area on federal lands </li></ul><ul><li>What will understory look like? </li></ul>
  24. 27. Keep all the pieces