Climate smart grazing: The impact of adaptive multi-paddock grazing on soil carbon stocks, organic carbon stability and soil health in southern Ontario

dc.contributor.advisorSchneider, Kimberley
dc.contributor.advisorWagner-Riddle, Claudia
dc.contributor.authorMehre, Jessica
dc.date.accessioned2023-04-06T20:27:59Z
dc.date.available2023-04-06T20:27:59Z
dc.date.copyright2023-03
dc.date.created2023-03-22
dc.degree.departmentDepartment of Plant Agricultureen_US
dc.degree.grantorUniversity of Guelphen
dc.degree.nameMaster of Scienceen_US
dc.degree.programmePlant Agricultureen_US
dc.description.abstractAdaptive multi-paddock (AMP) grazing has been purported as a ‘climate-smart’ practice due to its potential to mitigate greenhouse gas emissions by increasing soil organic carbon (SOC) stocks, although contrasting results have been observed. The goal of this study was to compare SOC stocks between neighboring AMP and non-AMP beef farms in southern Ontario while simultaneously evaluating the stability and origin of potential SOC stock differences. Higher SOC and total nitrogen stocks were found in AMP, along with higher mineral-associated carbon stocks in the top 15 cm under AMP, indicating greater SOC stability with the grazing strategy. Abundances of microbial phospholipid fatty acids (PLFA) classes via gas chromatography were significantly higher in AMP than non-AMP with no change in community structure or community ratios. No differences were detected in autoclaved citrate-extractable protein, a novel soil health test. This research shows that in southern Ontario and other temperate pastures, AMP grazing should be encouraged over continuous grazing to increase SOC stocks and stability.en_US
dc.identifier.urihttps://hdl.handle.net/10214/27495
dc.language.isoenen_US
dc.publisherUniversity of Guelphen
dc.rights.licenseAll items in the Atrium are protected by copyright with all rights reserved unless otherwise indicated.
dc.subjectsoil carbonen_US
dc.subjectsoil organic matteren_US
dc.subjectrotational grazingen_US
dc.titleClimate smart grazing: The impact of adaptive multi-paddock grazing on soil carbon stocks, organic carbon stability and soil health in southern Ontarioen_US
dc.typeThesisen

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