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 12 of 12 for “"Temporary Wetlands"”.
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Enhancement of Floral Species Richness in Glaciated Prairie Temporary Wetlands
… semipermanently flooded Prairie Pothole Region wetlands frequently recover plant species richness resembling undisturbed conditions. However, plant species richness in temporarily flooded wetlands often recovers poorly due to colonization by aggressive undesirable species. This study was …
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Effects of habitat transformation on temporary wetlands in the South-Western Cape, South Africa
The widespread loss of temporary wetlands to human activities has been well established, but virtually no information exists on how the human transformation of landscapes has altered the ecological character of those wetlands that remain. This thesis investigates environmental conditions and …
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Resurrection ecology of invertebrates in temporary wetlands in the Cape Floristic region: effects of urbanisation and fire
… their importance to regional biodiversity, temporary wetlands and their invertebrate communities are generally understudied and under-conserved. Resurrection ecology is used to study the communities present in the dry phase of temporary wetlands to gain a better understanding of the …
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Migrant Shorebird, Breeding Waterfowl, and Invertebrate Reponse to Conditions in Temporary Wetlands in Easter Central South Dakota During Spring
… 1997 and 1998, more than 100 tilled and untilled temporary wetlands in Beadle County, South Dakota were surveyed for shorebird and waterfowl use. Over 5,000 shorebirds used these wetlands in both 1997 and 1998. Of the 26 shorebirds species observed, the most abundant were white-rumped, pectoral, …
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Analysis of Hydric Pine Flatwood Ephemeral Pool Macroinvertebrate and Crustacean Assemblages Along a Temporal and Spatial Gradient From a Hypothesized Colonial Source
… crustacean assemblages in hydric pine flatwood wetlands during fill and drawdown periods was conducted from September to November 1998, in Lee County, Florida. Physical and chemical information, relationships between community composition and physical and chemical conditions were analyzed and a …
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Sensitivity of freshwater algal communities to environmental variables in Betty's Bay and Onrust in the Western Cape, South Africa
… differences including human impacts in wetlands in the Western Cape of South Africa. Samples were collected from three permanent and three temporary wetlands in Betty's Bay and a temporary wetland in Onrust, near the town of Hermanus. The environmental variables which were measured were …
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Development and Application of Vegetation-Based Biomonitoring Criteria for Floodplain Wetlands
The condition and viability of floodplain wetlands in the Garrison Reach of the upper Missouri River is largely unknown. Due to the transitory nature of temporary and seasonal wetlands, wetland research in the region has focused primarily on semipermanent and permanent wetlands. As part of a …
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Landscape Characteristics Affecting Habitat Use and Productivity of Avifauna on Stock Ponds in Western South Dakota
… protocol for surveying waterfowl. Seasonal and temporary wetlands were more abundant in fragmented landscapes. Wetlands in fragmented landscapes had more emergent vegetation, vegetation types, and trees due to less trampling and grazing pressure by livestock. Fragmented landscapes also had less …
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Spatiotemporal Patterns of Distribution and Drivers of Neonicotinoid Insecticide Fate in Canadian Prairie Pothole Wetlands
… true of neonicotinoid interactions with wetlands in the Canadian Prairies. Between 2009 and 2012, neonicotinoid use as a seed treatment increased by 30% across the Canadian Prairies. During spring 2012 to spring 2013, I sampled water and sediment from 136 wetlands situated in a range of …
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Avian and Aquatic Invertebrate Abundance on Three Agricultural Management Systems in Eastern South Dakota
… waterfowl pair abundance was generally higher in temporary wetlands on the ORG and/or TNT farming systems, however it was higher in seasonal and semipermanent wetlands on the CON farming system. Species richness was typically higher on the ORG system for individual wetland classes and when all …
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RESOURCE SUBSIDIES ACROSS THE AQUATIC-TERRESTRIAL BOUNDARIES OF TEMPORARY PONDS
… boundaries of other aquatic systems, like temporary ponds, have received little attention. Temporary ponds are seasonally inundated aquatic habitats and patterns of energy transport across transient aquatic-terrestrial boundaries are not well understood. To address the lack of information …
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Modeling Wetland Use By Spring-Migrating Lesser Scaup (Aythya affinis) in Eastern South Dakota
… the variables that best described scaup use of wetlands in South Dakota’s Prairie Pothole Region (PPR). Empirical data were used to develop a temporally dynamic spatial model to describe historic habitat suitability. The model was then applied to other parts of the PPR used by migrating scaup. …