Using lignin biomarkers and 14C, of both river DOC and POC, and permafrost soils, to characterize the impacts of climate warming and permafrost degradation on the organic carbon budget of the Hudson Bay, Canada

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dc.contributor.authorGodin, Pamela
dc.contributor.examiningcommitteeKuzyk, Zou Zou (Geological Sciences) Goh, Tee Boon (Soil Sciences) Outridge, Peter (Geological Survey of Canada)en_US
dc.contributor.supervisorStern, Gary (Environment and Geography) Macdonald, Robie (Environment and Geography)en_US
dc.date.accessioned2015-01-08T17:39:49Z
dc.date.available2015-01-08T17:39:49Z
dc.date.issued2015-01-08
dc.degree.disciplineEnvironment and Geographyen_US
dc.degree.levelMaster of Science (M.Sc.)en_US
dc.description.abstractThis study looks at characterizing the terrigenous OC sources, like permafrost, of POC and DOC through 17 rivers and six soils of the Hudson Bay (HB) using lignin biomarkers, and Δ14C. Our findings show the dominance of the OC flux (89%) from the southwest Hudson Bay Rivers, especially from DOC (93%), shedding light on the sources and fate of OC in HB sediments. With warming, organic cryosols, with high OC content in the Cz horizon, have the potential to release as much as 1.5 gOC/m2 for every cm increase in active layer depth. The [Ad/Al] ratios, when combined with 14C ages of DOM, show that older SOC is being released in some rivers and is fresher than expected due to its preservation within permafrost. S/V and C/V ratios, are well correlated to latitude in DOM, reflecting the vegetation in their drainage basins and can be used to indicate OC sources.en_US
dc.description.noteFebruary 2015en_US
dc.identifier.urihttp://hdl.handle.net/1993/30177
dc.language.isoengen_US
dc.rightsopen accessen_US
dc.subjectHudson Bayen_US
dc.subjectOrganic Carbonen_US
dc.subjectLignin biomarkersen_US
dc.subject14Cen_US
dc.subjectPermafrosten_US
dc.subjectDOCen_US
dc.subjectPOCen_US
dc.subjectOC cyclingen_US
dc.subjectClimate Warmingen_US
dc.titleUsing lignin biomarkers and 14C, of both river DOC and POC, and permafrost soils, to characterize the impacts of climate warming and permafrost degradation on the organic carbon budget of the Hudson Bay, Canadaen_US
dc.typemaster thesisen_US
local.subject.manitobayesen_US
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