Catastrophic windstorm and fuel-reduction treatments alter ground beetle (Coleoptera: Carabidae) assemblages in a North American sub-boreal forest
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Forest Ecology and Management. 256: 1104-1123.
We studied the short-term effects of a catastrophic windstorm and subsequent salvage-logging and prescribed-burning fuel-reduction treatments on ground beetle (Coleoptera: Carabidae) assemblages in a sub-boreal forest in northeastern Minnesota, USA. During 2000?2003, 29,873 ground beetles represented by 71 species were caught in unbaited and baited pitfall traps in aspen/birch/conifer (ABC) and jack pine (JP) cover types. At the family level, both land-area treatment and cover type had significant effects on ground beetle trap catches, but there were no effects of pinenes and ethanol as baits. Six times more beetles were trapped in the burned forests than in the other land-area treatments; more beetles were caught in undisturbed than in wind-disturbed sites, and one-third more beetles were caught in the ABC than in the JP cover type. Thus, the windstorm generally reduced the activity-abundance of the beetles, but prescribed burning increased it. Both salvaged and burned forest plots (especially in the ABC cover type)had the greatest species richness, diversity, and the most unique species assemblages.
Keywordsbiodiversity Carabidae forest management ground beetles invasive species pitfall trapping prescribed-fire Pterostichus melanarius salvage-logging silviculture wind disturbance
Gandhi, Kamal J.K.; Gilmore, Daniel W.; Katovich, Steven A.; Mattson, William J.; Zasada, John C.; Seybold, Steven J. 2008. Catastrophic windstorm and fuel-reduction treatments alter ground beetle (Coleoptera: Carabidae) assemblages in a North American sub-boreal forest. Forest Ecology and Management. 256: 1104-1123.