Trends in transitory impacts on wetland margins in prairie Canada (1986-1990) / Marc H. Schuster
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TextSeries: Thesis. (M.N.R.M.)Publication details: Winnipeg, MB : University of Manitoba, 1993.Abstract: This report is a description of the agricultural impacts on wetland margins in prairie Canada. The objectives of this study were to determine trends in transitory agricultural impacts to wetland margins in prairie Canada, and the relationship of these impacts to water permanence. Approximately 10,000 potential wetlands, within 65 transects, and associated impaction data were analyzed, per year, over a five year period. Cultivation was found to be the most dominant agricultural impact to wetland margins, followed by grazing, haying,burning and clearing. Total impacts to wetland margins generally increased from Manitoba to Alberta. Impact rates were, for the most part, higher in grassland areas than in parkland areas. Overall,agricultural impacts tended to decrease with water permanence, except grazing and haying. The rate of agricultural impacts remained relatively constant over the study period.
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This report is a description of the agricultural impacts on wetland margins in prairie Canada. The objectives of this study were to determine trends in transitory agricultural impacts to wetland margins in prairie Canada, and the relationship of these impacts to water permanence. Approximately 10,000 potential wetlands, within 65 transects, and associated impaction data were analyzed, per year, over a five year period. Cultivation was found to be the most dominant agricultural impact to wetland margins, followed by grazing, haying,burning and clearing. Total impacts to wetland margins generally increased from Manitoba to Alberta. Impact rates were, for the most part, higher in grassland areas than in parkland areas. Overall,agricultural impacts tended to decrease with water permanence, except grazing and haying. The rate of agricultural impacts remained relatively constant over the study period.