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Seasonal phosphorus cycling in a riparian wetland, Grand Valley, Ontario

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Title: Seasonal phosphorus cycling in a riparian wetland, Grand Valley, Ontario
Author: Coppolino, Jacob
Department: School of Environmental Sciences
Program: Environmental Sciences
Advisor: Glasauer, Susan
Abstract: Loss of riparian wetlands is linked to surface water phosphorus (P) pollution. Wetland riparian buffer zones (RBZ) can help to reduce P runoff. The seasonality of P cycling in wetland soils is poorly understood, especially P mobilization in early spring when freeze-thaw cycling (FTC) occurs. Here labile soil P and soil biology are investigated over the spring and in response to FTC. Soil was sampled from a wetland RBZ along the Grand River, Ontario. Soil temperature and conductivity, labile P, microbiome, and microbial biomass-P were quantified over the spring. In the lab, FTC experiments characterized the response of microbial respiration, microbial biomass P, and labile P. Results indicate labile P increased over the spring. In lab, soil labile P increased after 6 FTC compared to control treatments and fewer FTC. Results indicate relatively low risk for FTC to cause increased soil P mobilization in wetland RBZ.
Date: 2021
Rights: Attribution-ShareAlike 4.0 International
Embargoed Until: 2022-12

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Attribution-ShareAlike 4.0 International Except where otherwise noted, this item's license is described as Attribution-ShareAlike 4.0 International