Then and Now: Understanding Change on an Agricultural Landscape
thesisposted on 24.05.2021, 17:58 by Alexander Pardy
Freshwater eutrophication typically driven by non-point source phosphorus pollution is one of the worlds’ most prevalent and vexing environmental problems with the Laurentian Great Lakes on the Canada – United States border. During 1975 – 1977, the Pollution from Land Use Activities Reference Group examined eleven agricultural watersheds in order to investigate the impacts of land use activities on surface water quality. This study examined how agricultural land use and management has transformed in two watersheds, Nissouri Creek and Big Creek. The goal of this study was to quantify the phosphorus mass balance change within the watersheds. During 2015 – 2019 land use and management practices survey data was collected. Results of this study showed Nissouri Creek is now depleting -2.19 kilograms of phosphorus per hectare of agricultural land, while Big Creek is still accumulating 4.77 kilograms of phosphorus per hectare of agricultural land. This study can guide efforts to limit the long-term losses of phosphorus in the Laurentian Great Lakes and elsewhere.
DegreeMaster of Spatial Analysis
Granting InstitutionRyerson University
LAC Thesis TypeThesis
Watershed management -- Ontario -- Big CreekWatershed management -- Ontario -- Nissouri CreekWater -- Phosphorus content -- Ontario -- Big CreekWater -- Phosphorus content -- Ontario -- Nissouri CreekPhosphorus -- Environmental aspects -- Ontario -- Big Creek -- MeasurementPhosphorus -- Environmental aspects -- Ontario -- Nissouri Creek -- MeasurementWater quality -- Ontario -- Big Creek -- MeasurementWater quality -- Ontario -- Nissouri Creek -- MeasurementLandscape ecology -- Ontario -- Big CreekLandscape ecology -- Ontario -- Nissouri Creek