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 7 of 7 for “"Human Alteration"”.
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Zooplankton in Flowing Waters
… flow variability units and zones of human alteration. I also assessed the relative contribution of flow characteristics to explaining the overall pattern of zooplankton community structure of the river. The results of this study indicate there are detectable differences in …
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Designing against habitat loss: Facilitating movement of the Louisiana black bear
… and (3) more amicable coexistence of bears and humans. In May 2019, the Intergovernmental Science-Policy Platform on Biodiversity and Ecosystem Services (IPBES) released its Global Assessment Report on Biodiversity and Ecosystem Services, and it foretold of a grim future for wildlife worldwide. …
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The Role of Physiography in the Relationships Between Land Cover and Stream Fish Assemblages
Human alteration of the landscape for agricultural and urban land use has been linked to the degradation of streams and stream biota. Natural physical and climatic characteristics, or physiographic template, are important for determining natural land cover and constraining human land use, and are …
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Analysis of the Tidal Range in the Sacramento San Joaquin Delta from 1857 to Present
… San Joaquin Delta has been highly altered by human activity since the mid-1800s from mining, agriculture, dredging, and urbanization. Did the resulting modifications to channel width, depth, and length alter tidal range in the Sacramento San Joaquin Delta?</p> <p>In this study, archival tidal …
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Ecological legacies from grasslands to agroecosystems : microbial ecology, plant community assembly, and resource allocation
… of agriculture play key roles in the continued alteration of the soil profile. The response of the soil physical, chemical, and biological properties along with the plant community composition in response to land-use changes is poorly understood. These ecological variables are often compared to …
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The population and community ecology of small freshwater ponds: Assigning process to pattern
… inhabiting natural and, more recently, human-created ecosystems. Empirical and theoretical advancements have highlighted the importance of considering the effects of both historical (i.e., colonization history and priority effects) and contemporary processes (e.g., species sorting and …
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Effects of fragmentation and invasion on ant communities
Human alteration of natural environments has triggered a sixth major extinction event. Activities such as land-use change, habitat loss and fragmentation, the transport and establishment of invasive species, overhunting, pollution and climate change have threatened tens of thousands of species …