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Temporal and Spatial Dynamics of Nutrient Retention on Conventional Farms in Southwestern Ontario

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dc.contributor.advisor Andrew, MacDougall
dc.contributor.advisor Jana, Levison
dc.contributor.author Noble, Daniel
dc.date.accessioned 2021-01-14T18:34:17Z
dc.date.available 2021-01-14T18:34:17Z
dc.date.copyright 2021
dc.date.created 2021-01-11
dc.identifier.uri https://hdl.handle.net/10214/23757
dc.description.abstract Nutrient losses from farms threaten environmental and human health globally. This thesis evaluates edge-of-field mitigation strategies, testing the hypothesis that downslope deep-rooted perennial buffers intercept nutrient leaching from crop fields. This thesis examined buffer interception of subsurface mobile nitrogen and phosphorus seasonally in sand versus clay soils, and contrasted findings with nutrient concentrations in nearby tile-drains, surface waters, and established drinking water standards. Overall, soil texture and climate influenced nutrient transport over interception by prairie buffer. Buffers intercepted nutrients during peak growth and at typical summer precipitation but were overwhelmed by high flood events. They were largely ineffective in spring prior to plant canopy development. Buffers can work as edge-of-field strategies, but only as one part of a farm-level effort to retain nutrients. en_US
dc.language.iso en en_US
dc.subject nutrient loss en_US
dc.subject prairie filter strips en_US
dc.subject nutrient retention en_US
dc.subject agroecosystem en_US
dc.subject nutrient cycling en_US
dc.subject buffer strips en_US
dc.title Temporal and Spatial Dynamics of Nutrient Retention on Conventional Farms in Southwestern Ontario en_US
dc.type Thesis en_US
dc.degree.programme Integrative Biology en_US
dc.degree.name Master of Science en_US
dc.degree.department Department of Integrative Biology en_US
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