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 19 of 19 for “"Carabid"”.
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ECOLOGY OF GROUND-DWELLING CARABID BEETLES (COLEOPTERA: CARABIDAE) IN THE PERUVIAN ANDES
… research was to investigate the ecology of carabid beetles at different altitudes in southeastern Peru (Coleoptera: Carabidae). Changes in species richness, species assemblages, and wing and body attributes were estimated at different altitude zones along both disturbed and undisturbed …
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Carabid Beetle Ecology as a Function of Disturbance in Temperate and Tropical Forests
… distributions and species assemblages, with carabid beetles (Coleoptera: Carabidae) as the model organism group.
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Examining the impact of heathland restoration via felling on carabid diversity in the Purbeck Heaths National Nature Reserve
… richness, composition, and functional traits of carabid assemblages. Specifically, it assessed the impact of restorative felling — the removal of planted conifers from former heathland — in the Rempstone and Godlingston areas of Purbeck Heaths. Carabid richness, abundance, and functional traits …
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UNDERSTANDING NON-TARGET INSECTICIDE IMPACTS AND OPPORTUNITIES FOR BIOLOGICAL CONTROL IN FIELD CORN
… I quantified their impact on predation and on carabid beetle communities. Carabid beetles may be important predators of pest slugs; therefore, I also examined carabid-slug interactions. Finally, I investigated whether a novel pest-management technique (RNAi) could travel up the food chain …
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GROUND BEETLES (COLEOPTERA: CARABIDAE) AS BIODIVERSITY INDICATORS FOR AGE STRUCTURE IN PIEDMONT FORESTS?
… community composition, and wing state of Carabidae as a function of forest age and identified eighteen species as potential ecological indicators for forest age. Ground beetles (Coleoptera: Carabidae) are typically ground-dwelling, generalist predators. Carabids were collected monthly …
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Vegetative communities as indicators of ground beetle (Coleoptera: Carabidae) diversity
… of invertebrates—the ground beetles (Coleoptera: Carabidae). Specifically, that (1) land units of the same classification contained similar carabid species assemblages and that (2) differences in species structure were correlated with variation in land unit characteristics, including canopy and …
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Effects of management practices on the ground beetle assemblages of grassland and related habitats (Coleoptera: Carabidae)
… most diverse and species-rich and to support a carabid fauna of larger body size than grassland sites. Within the grassland sites, intensification of management resulted in a reduction both in species richness and in body size. The species composition of intensively managed sites differed from …
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The potential of restored landfill sites for biodiversity conservation in the UK
… (vascular plants and bryophytes), invertebrates (carabid beetles and land snails), and vertebrates (birds) were studied on nine restored landfill sites and paired reference sites in the East Midlands region of the UK during 2007 and 2008. Plant species data were collected by random quadrats along …
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Undercover predators: Vegetation mediates foraging, trophic cascades, and biological control by omnivorous weed seed predators
… pensylvanicus </em>, the most common carabid seed predator in Midwestern crop systems. I found that while adult beetles were strong dispersers and foraged in a variety of habitat types, larvae were less mobile and more vulnerable to disturbance than adults. They were almost exclusively …
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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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Phylogeography of Darlingtonea Kentuckensis and Molecular Systematics of Kentucky Cave Trechines
<p>The monotypic cave carabid genus Darlingtonea is widely distributed along the eastern band of the Mississippian/Pennyroyal plateau in Kentucky and northern Tennessee. DNA sequence data from the mitochondrial gene cytochrome oxidase subunit I (COI) was collected from one to four individuals from …
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Impact of mustards (Brassicaceae) grown as cover crops on non-target arthropod communities
… were investigated in 2008. The abundance of carabid beetles, collembolans, and mites were monitored before, during, and after the seeding, growth, and incorporation of two mustard varieties (‘Tilney’ and ‘Florida Broadleaf’) individually or in combination, and in plots where no cover crops …
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Biology of immature Culicoides variipennis ssp. australis (Coq.) (Diptera:Ceratopogonidae) at Saltville, VA
… becoming vulnerable to predation by ants and carabid beetles. Excellent survival rates of the larvae during the summer was attributed to habitat stability, the paucity of predators and parasites and abundant microfloral content (i.e. food} of the pond water. Intra-specific competition for food …
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Is Everything Connected? Following the Predators, Pests, and Plants Within a No-Till, Western Montana Agroecosystem
… of six beneficial arthropod predators - the carabid beetle (Carabidae: Coleoptera), minute pirate bug (Orius spp.: Hemiptera), nabid bug (Nabis spp.: Hemiptera), lady beetle larvae (family Coccinellidae: Coleoptera), syrphid fly larvae (Syrphidae: Diptera) and spiders (Araneae) - and one crop …
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Is Everything Connected? Following the Predators, Pests, and Plants Within a No-Till, Western Montana Agroecosystem
… of six beneficial arthropod predators - the carabid beetle (Carabidae: Coleoptera), minute pirate bug (Orius spp.: Hemiptera), nabid bug (Nabis spp.: Hemiptera), lady beetle larvae (family Coccinellidae: Coleoptera), syrphid fly larvae (Syrphidae: Diptera) and spiders (Araneae) - and one crop …
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The effects of flooding disturbance on the distribution and behaviour of riparian arthropods along a lowland gravel river
… species, particularly spiders (Araneae) and carabid beetles (Carabidae), supposedly affect species composition as well. Moreover, organisms occurring within a highly structured system and which are repeatedly exposed to flooding disturbance, are expected to have evolved or adjusted their …
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Micro- and nanoscale features of insect cuticle and their impacts on wetting, friction, and optical properties
… roles of this iridescence were examined in carabid, staphylinid, and scarab beetles. No differences were found in the ability to match the color of various substrates or to linearly polarize light between iridescent and noniridescent beetles. The ability for diffraction gratings to modify …
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Generalist predators in reduced-tillage corn: predation on armyworm, habitat preferences, and a method to estimate absolute densities
… removed from the field included ground beetles (Carabidae), rove beetles (Staphylinidae), ants (Formicidae), and spiders (Araneae). Armyworm damage to corn plants was significantly greater where generalist predator populations were reduced, through the use of pitfall traps and exclusion arenas, …