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Showing 1 to 14 of 14 for “"Prairie wetland"”.
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Hydrological regime changes in a Canadian Prairie wetland basin
The hydrology of the Canadian Prairies has been well described in the scientific literature. 20th C observations show that snowmelt over frozen soils accounted for over 80% of the annual runoff, and streamflow hydrographs peaked in April and ceased in May due to a lack of runoff or groundwater …
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Fate and effects of triallate in a prairie wetland
Extensive use of pesticides in the Canadian prairies, where cropland is interspersed with wetlands, increases the potential for contamination of aquatic ecosystems. Triallate is a widely used herbicide for the control of wild oats and it is frequently detected in aquatic systems. Because triallate …
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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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Response of semi-permanent prairie wetland to climate change: a spatial simulation model
… the hydrology and vegetation in semi-permanent wetlands located in the glaciated prairie region of North Dakota. As a means to that objective, a spatially-defined simulation model of the vegetation dynamics in these wetlands was constructed. A hydrologic component of the model estimated water …
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Composition, Biomass, and Protein Content of a Lemna trisulca L., Invertebrate Community in a Prairie Wetland
… trisulca L.) were collected from a South Dakota prairie wetland during the summer 1981. Amphipods and gastropods were the dominant macroinvertebrates found within samples of duckweed in terms of biomass and density. Cladocera were the dominant microinvertebrates found in association with star …
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Estimate of Production By a Population of Fathead Minnows, Pimpephales promelas, In a South Dakota Prairie Wetland
… promelas Rafinesque, in a South Dakota prairie wetland. The study was conducted from May to September of 1976. Population estimates were obtained using a Schnabel-type mark and recapture model. Fish were marked either by fin clipping or granular fluorescent pigments driven into the …
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Aquatic Plant Communities and Invertebrates in a Prairie Pothole During Duck Brood Rearing
… and associated invertebrates were collected in a prairie wetland. Sampling was done weekly throughout the duck brood rearing season. Linear regression revealed a 4 to 100 ratio of animal to plant biomass (R²=0.488). Comparatively high degrees of association were found between Ceratophyllum …
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Abundance, Biomass, and Diversity of Aquatic Invertebrates in Level Ditches and Adjacent Natural Emergent Marsh in an Eastern South Dakota Wetland
… natural emergent marsh in a South Dakota prairie wetland were sampled during the summer of 1982. Collections were made in both the water column and the bottom substrates. Forty-five taxa were collected. Analysis of variance indicated that a significantly greater mean number of taxa and a …
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Comparison of Bare Root vs. Potted Plants, Species Selection, and Caging Types for Restoration of a Prairie Wetland, and Quantitative Analysis and Descriptive Survey of Plant Communities and Associations at Lewisville Lake Environmental Learning Area (LLELA), Lewisville, TX
… community, dominated by weedy species. Prairie communities are dominated by Johnson grass and ragweed, with climax tall grass prairie communities only in areas that have been planted with native grass seed. Forest communities are similarly in an early successional stage, dominated by the …
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Small Mammals in Prairie Wetlands: Habitat Use and the Effects of Wetland Modifications
… types, small mammal habitat use patterns in prairie wetlands are poorly understood. The distribution of the mammal fauna of South Dakota is also not well known. Because of the lack of information in these areas, evaluation of the impacts of wetland modifications on the resident mammal …
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Assessing the Effects of Chronic Neonicotinoid Insecticide Exposure on Aquatic Insects using Multiple Experimental Approaches
… those with aquatic larval stages. Many Prairie wetlands are in regions of intensive agriculture and are directly at risk of neonicotinoid contamination and require special considerations to best protect these ecologically important areas. Under laboratory conditions, I compared the …
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Using temperature profiles to investigate the hyporheic zone in an agricultural drainage ditch
… Glacial Ridge Project, a large-scale prairie/wetland restoration, approximately 24 km (15 miles) east of Crookston, Minnesota. </p><p>To characterize the hyporheic zone along the ditch, statistical analyses were conducted on the temperature data collected during the study. The two …
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Climatic Controls on the Porewater Chemistry of Mid-continental Wetlands
<p>Wetlands develop where climate and physiography conspire to maintain saturated soils at the land surface, support diverse plant and animal communities, and serve as globally important sinks for atmospheric carbon. The chemistry of wetland porewaters impacts near-surface biological communities …