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<p>Forest harvesting can create habitat for wild bees, but with potentially different characteristics from habitats created by natural disturbance such as wildfire. We evaluated how bee communities varied between early seral&#xa0;stands regenerated by wildfire or intensively managed stands regenerated by clearcut harvest up to 20 years post-disturbance, using a chronosequence design in southwest Oregon. We also compared bee communities supported by post-fire salvage logging, 6–9 years post-disturbance. Clearcut stands supported higher bee abundance (90% CI: 36, 255%) and species richness (90% CI: 24.6, 44.8%) than fire-origin stands initially, but lower abundance (90% CI: –21, –71%) and species richness (90% CI: –51.4, –66.5%) in the oldest stands. Solitary nesting species associated with dead wood (mostly <i>Osmia</i> spp.) were more abundant in fire-origin stands. Our results indicate that clearcut harvest creates habitat for most wild bees adapted to stand-replacing fire but compromises habitat longevity and limits dead wood nesting habitat.</p>

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Comparison of Early Seral Forest Bee Communities Following Clearcutting or Wildfire Depends on Stand Age and Nesting Guild

  • 期刊论文

  • 出版模式：

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  • 发表日期：

    2025年4月28日

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  • Graham S. Frank,
  • James W. Rivers,
  • Jake Verschuyl,
  • Lincoln R. Best,
  • Matthew G. Betts,
  • Andrew J. Kroll,
  • Mark E. Swanson,
  • Meg A. Krawchuk

摘要

Forest harvesting can create habitat for wild bees, but with potentially different characteristics from habitats created by natural disturbance such as wildfire. We evaluated how bee communities varied between early seral stands regenerated by wildfire or intensively managed stands regenerated by clearcut harvest up to 20 years post-disturbance, using a chronosequence design in southwest Oregon. We also compared bee communities supported by post-fire salvage logging, 6–9 years post-disturbance. Clearcut stands supported higher bee abundance (90% CI: 36, 255%) and species richness (90% CI: 24.6, 44.8%) than fire-origin stands initially, but lower abundance (90% CI: –21, –71%) and species richness (90% CI: –51.4, –66.5%) in the oldest stands. Solitary nesting species associated with dead wood (mostly Osmia spp.) were more abundant in fire-origin stands. Our results indicate that clearcut harvest creates habitat for most wild bees adapted to stand-replacing fire but compromises habitat longevity and limits dead wood nesting habitat.