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The long-term effects of drainage on carbon cycling in a boreal fen

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dc.contributor.advisor Turetsky, Merritt
dc.contributor.author Kotowska, Agnieszka
dc.date.accessioned 2013-01-07T20:25:14Z
dc.date.available 2013-01-07T20:25:14Z
dc.date.copyright 2013-01
dc.date.created 2012-12-12
dc.date.issued 2013-01-07
dc.identifier.uri http://hdl.handle.net/10214/5247
dc.description.abstract I investigated the effects of multi-decadal water table drawdown on carbon (C) exchange, as well as functional relationships between C fluxes and environmental controls, in a boreal rich fen. Drainage increased ecosystem respiration of CO2 and decreased CH4 fluxes, but did not affect understory primary productivity. Drainage altered plant responses to light availability, as well as the responses of ecosystem respiration and CH4 flux to water table position. In a laboratory experiment, I found that drainage reduced potential CO2 and CH4 fluxes suggestive of decreased peat substrate quality. Together, these results indicate that long-term drying increases C losses and that both environmental conditions and substrate quality influenced C fluxes post-drainage. My findings suggest that C losses from increased ecosystem respiration may not be mitigated by increases in plant productivity or decreases in substrate quality, and that long-term drainage reduced C storage capacity in this boreal fen. en_US
dc.description.sponsorship The Natural Sciences and Engineering Research Council of Canada en_US
dc.language.iso en en_US
dc.subject carbon en_US
dc.subject peatland en_US
dc.subject fen en_US
dc.subject drainage en_US
dc.subject water table drawdown en_US
dc.subject disturbance en_US
dc.subject decomposition en_US
dc.subject climate change en_US
dc.subject boreal en_US
dc.title The long-term effects of drainage on carbon cycling in a boreal fen 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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