Habitat Distribution and Seasonal Occurrence of Carabid Beetles in East-central Minnesota

Reverting Conservation Reserve Program Lands to Wheat and Livestock Production: Effects on Ground Beetle (Coleoptera: Carabidae) Assemblages

“…The factors determining habitat preference by these species are unknown, but may be due to microclimatic differences between no-tillage wheat and minimum-tillage wheat. Some species, such as A. cupreolata prefer mesic habitats over zeric habitats (Epstein and Kulman 1990). The soil and vegetation were less disturbed under no-tillage than under minimum-tillage, and perhaps this caused a higher moisture content in no-tillage wheat.…”

“…The soil and vegetation were less disturbed under no-tillage than under minimum-tillage, and perhaps this caused a higher moisture content in no-tillage wheat. However, P. elongatus seemingly prefers zeric habitats over mesic habitats (Epstein and Kulman 1990), yet it too preferred notillage wheat over minimum-tillage wheat. Another possibility is that no-tillage wheat had more prey available than minimum tillage wheat.…”

Fire Frequency and Mosaic Burning Effects on a Tallgrass Prairie Ground Beetle Assemblage

“…Although life histories vary, temperate carabids in general are thought to primarily breed in either spring or fall (Thiele 1977), so our seasonal peaks may represent members of these two ecological groups, in effect distinct 'temporal guilds'. Most carabids at Konza Prairie were much more active in one season than in the other (Table 4), a common pattern for the group as a whole (Thiele 1977;Epstein and Kulman 1990). Species appearing early in the season likely overwintered as adults, while species active at other times may have represented a cohort laid as eggs earlier in the season, or survived through the winter at the egg stage (Thiele 1977).…”

Invertebrates in urban areas: A review

“…These increases may be due to a number of reasons: increased shelter from predators and parasitoids, increased habitat layers and therefore niches, increased food for herbivores, increased prey for predators or parasites, changes in microclimate and more sites for oviposition (Czechowski, 1982;Chudzicka, 1986;Epstein & Kulman, 1990;Lövei & Sunderland, 1996;Morris, 2000;Brose, 2003;Haysom et al, 2004;Helden & Leather, 2004;Magura et al, 2004Magura et al, , 2008a. Further to this, mowing itself may kill off invertebrates (Czechowski, 1982), some species are sensitive to disturbance (Luff, 2007) and some species choose to migrate out of sites with frequent mowing (Hartley et al, 2007) Gray (1989) noted that opportunistic species can become dominant with increasing disturbance.…”