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 10 of 10 for “"trophic cascades"”.
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Undercover predators: Vegetation mediates foraging, trophic cascades, and biological control by omnivorous weed seed predators
… mediated predator-prey interactions over four trophic levels. I found that use of cover by small mammals avoiding predation risk by nocturnal avian predators reduced the activity of carabid seed predators by 50%, but the net effect of small mammals on seed removal was neutral. ^ Finally, in …
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Addressing the impact of the EU CFP landing obligation on the northern North Sea ecosystem and Shetland fisheries in a changing climate.
… Shetland UHI: Shetland food web biodiversity and trophic interactions project 2017). Retrospective analysis of environmental drivers in terms of their significance in altering trophic dynamics of the food web and productivity of commercial stocks were also explored.<br/>This research demonstrates …
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Ecosystem Functional Consequences Of Body Size Variation In An Apex Predator (Ambystoma jeffersonianum)
… ecosystem functioning. We sought to characterize trophic cascades initiated by larval populations of Ambystoma jeffersonianum that varied in size structure based on diversity of maternal lines (i.e., sibship diversity) by quantifying the effect on larval salamanders, benthic macroinvertebrates, …
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Determining the effects of non-native brook stickleback (Cualea inconstans) on the lentic systems at Turnbull National Wildlife Refuge, Cheney, WA
… introduction of non-native fishes can cause trophic cascades in freshwater habitats; these effects may be amplified in ephemeral/temporary habitats. Non-native brook stickleback fishes (Culaea inconstans) were first documented on the Turnbull National Wildlife Refuge (WA) in 1999 and are now …
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The Causes and Consequences of Community Disassembly in Human Modified Tropical Forest: Scarabaeine Dung Beetles as a Model System
… as a model system to understand terrestrial trophic cascades, discuss the ability of species traits to explain population trends in observed dung beetle community disassembly, and conclude by demonstrating how these various lines of evidence linking dung beetle species with environmental …
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Fish Assemblage Structure, Trophic Ecology, and Potential Effects of Invading Asian Carps in Three Missouri River Tributaries, South Dakota
… that Silver Carp and Gizzard Shad overlapped trophically and the isotopic trophic niche of Emerald Shiner, which is usually pelagic, potentially moved to more benthic habitats and food sources as a result of Silver Carp presence. There were no perceived effects of Silver Carp on Bigmouth …
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Impacts of elk management and riparian condition on songbirds in Rocky Mountain National Park
… Park (RMNP) are declining as a result of a trophic cascade involving the local extinction of wolves (Canis lupus) and an exponential increase in elk (Cervus elaphus). In 2008, RMNP began installing elk exclosures to protect and restore willow communities and the diverse taxa that depend on …
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Foraging ecology of two piscivores in woody habitat and effects of their introduction on lake ecosystems
… populations. While the evidence for such “trophic cascades” is plentiful, a large body of subsequent research has suggested that certain properties of lakes found in lower latitude systems in the central and southern United States may buffer these systems from cascading effects of piscivore …
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The biogeography and trophic roles of coastal marine sponges (Porifera) from the west coast of the North Island, New Zealand: Influences of catchments.
… It examines ecological processes, linked to trophic cascades to further our understanding of factors affecting the distribution and abundance of sponge communities at smaller spatial scales (tens of kms), with particular focus on the effects of land derived catchment discharges. A combination …
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Effects of environmental warming on lentic freshwater communities and the behavioral and physiological responses by fishes to warming
… and phenological timing events, which can affect trophic cascades and cause differential species success. In ectotherms, rising environmental temperatures directly impact physiological mechanisms, influencing growth and metabolic costs that alter how individuals allocate energetic resources or how …