A comparison of terrestrial arthropods on post-fire forested landscapes under different management regimes in southwestern Alberta
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AbstractI sampled terrestrial arthropods in burned salvaged-logged, burned-unlogged and unburned conifer forest sites in southwestern Alberta. The richness, diversity and abundance of ground beetle (Coleoptera: Carabidae) species and genera, and spider (Araneae) and syrphid genera (Diptera: Syrphidae) were examined. Carabid richness and diversity was highest in the burned-unsalvaged site. However, abundance was similar among the sites. Carabids common to the burned areas included, Trachypachus, Sericoda, Harpalus and Amara species. Overall, yellow pans caught more carabid species and specimens with less sampling than pitfall traps. Spider richness and abundance were greatest in the unburned site. Pardosa predominated across all three sites and the number of web-building genera and specimens were highest in the unburned site. Syrphid richness and abundance were similar across the sites. Richness and abundance declined over the summer with peak capture rates in May-June.
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