Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 9 of 9 for “"Carabids"”.
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The influence of edge contrast on the diversity and composition of ground beetle (Coleoptera: Carabidae) functional traits in a lowland heterogeneous landscape.
… of arthropods to changes in the environment. Carabids (ground beetles) are well suited to studies of edge effects. Edge contrast, or the harshness of an edge, plays a vital role in explaining the distribution patterns of carabid beetles belonging to different habitat affinity groupings at …
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Effects of experimental disturbance on multi-taxa assemblages and traits: conservation implication in a forest-open landscape mosaic
… 183 species, 41531 ants from 20 species and 7564 carabids from 93 species, and recorded 23241 observations of 222 vascular plant species. Initial investigations revealed forestry trackways contained a component of the regional heathland spider assemblage, but this was significantly degraded as …
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Impact of mustards (Brassicaceae) grown as cover crops on non-target arthropod communities
… Fabricius accounted for 54 percent of all carabids recovered, and Poecilus chalcites Say accounted for 32 percent. In general, total abundance of carabids and abundance of dominant species of carabids were not affected by the cover crops during growth or after incorporation. A total of …
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The effect of reduced cultivation on selected soil fauna
… present in an agricultural environment e. g. the carabids and staphylinids. This study aimed to examine the effects of reduced cultivation techniques on earthworms and epigeic fauna in general, and on carabids and staphylinids in particular. Two separate farms were sampled. The first, Drayton …
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GROUND BEETLES (COLEOPTERA: CARABIDAE) AS BIODIVERSITY INDICATORS FOR AGE STRUCTURE IN PIEDMONT FORESTS?
… typically ground-dwelling, generalist predators. Carabids were collected monthly through pitfall traps from March 2009 through February 2010 from 33 sites representing 5 forest classes approximately 0, 10, 50, 85, and 150 years old. 2,568 individuals were collected, representing 29 genera and 66 …
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Examining the impact of heathland restoration via felling on carabid diversity in the Purbeck Heaths National Nature Reserve
… while forests and older dry heaths hosted larger carabids with different trait combinations, reflecting habitat structure and microclimate influences. These findings support conifer removal as beneficial for carabid diversity, while suggesting a role for retaining some mature conifers to enhance …
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Generalist predators in reduced-tillage corn: predation on armyworm, habitat preferences, and a method to estimate absolute densities
… were installed within the arenas to remove the carabids. Three three-week sampling trials were conducted in 1991 providing data for estimates on 5 June, 26 June, and 17 July. A single six-week sampling period was conducted in 1992 providing data for estimates on 2 June based on three, four, …
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Undercover predators: Vegetation mediates foraging, trophic cascades, and biological control by omnivorous weed seed predators
… digestive tracts. This implies that omnivorous carabids are competent biological control agents of weed seeds, and that provisions of plant cover will not only attract more seed predators, but also induce their seed-feeding behavior. Even though cover directly facilitates seed-feeding, it may …