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 “"Wetland birds"”.
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Habitat Area Requirements of Prairie Wetland Birds in Eastern South Dakota
… on bird use of 830 semipermanent and seasonal wetlands (0.2-217.5 ha) was studied to evaluate vegetative needs and habitat area requirements of 20 breeding wetland bird species in eastern South Dakota in 1995-1996. Vegetative preferences of species varied, but most waterfowl and nongame species …
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Evaluating the influence white-tailed deer have on wetland vegetation types with respect to wetland birds at Shiawassee National Wildlife Refuge, Saginaw, Michigan
… could cause biologists concern when managing wetlands as suitable habitat for migratory waterfowl since high levels of herbivory can negatively impact plant communities. There is a knowledge gap on how deer use of wetland vegetation types may affect bird use of those same wetlands. Our …
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Estimating occupancy and abundance of shorebirds through aerial surveys in the Illinois river valley
"Shorebirds are one of multiple guilds of wetland birds that have been experiencing population declines over the last 50 years. These species migrate long distances between northern breeding grounds and southern wintering grounds, and many need to stop and refuel along the way. The Illinois River …
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Influence of Habitat Characteristics on Wetland Bird Abundance and Species Richness at Ordway Prairie, South Dakota
… to investigate characteristics of glacial wetlands that influence abundance and species richness of wetland birds. Four bird surveys were conducted annually from mid-May through mid-August. Fourteen habitat variables were used to describe five wetland characteristics including wetland …
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Birds on Modified Wetlands in Eastern South Dakota
… species (other than Anatidae) in the prairie wetlands ecosystem. Seven wetlands on Waterfowl Production Areas in eastern South Dakota were utilized to measure differences between bird communities in plots with dug brood complexes and non-modified plots. Thirty-eight species of wetland birds …
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Understanding the spring migration ecology of Sora and Virginia Rail in central Illinois: a study utiilizing automated telemetry
… (Rallus limicola) belong to the family of marshbirds called Rallidae which consists of rails, coots, and gallinules. These secretive marshbirds are difficult to detect due to their cryptic nature in the dense emergent vegetation of wetlands. Detailed information about the spring migratory …
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Nongame Vertebrate Survey of Sand Lake National Wildlife Refuge, Brown County, South Dakota
… South Dakota. Emphasis was placed on nongame birds and small mammals and initial inventories were attempted for reptiles, amphibians, and fishes. Breeding nongame birds were surveyed using fixed-width belt transects in terrestrial habitats following standard count methods. Forty-six nesting …
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Modeling the spatial and temporal dynamics of coastal marsh birds
Wetland birds are likely to be influenced by habitat at multiple spatial scales, yet few studies have investigated bird responses at both broad and fine scales. Northern Gulf Coast marshes are dynamic ecosystems, and they provide an ideal place to examine habitat across spatial and temporal scales. …
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Relative Effects of Landscape Structure Variables, and Interactions with Life-History Traits, on the Abundance and Distribution of Wetland-Dependent Vertebrate Species
Wetland-dependent species are undergoing the largest wildlife population declines worldwide primarily due to habitat loss, but are a relatively understudied ecological group in landscape ecology. The overarching goal of my dissertation is to advance our understanding of the effects of landscape …