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Nutrient Limitation of Plants and Soil Microbial Growth in an Arctic Coastal Salt Marsh.

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dc.contributor.authorHargreaves, Sarah K.
dc.date.accessioned2012-04-14T02:11:12Z
dc.date.available2012-04-14T02:11:12Z
dc.date.issued2005
dc.degree.grantorUniversity of Toronto
dc.description.abstractIn order to assess the nutrient limitation of plants and soil microorganisms in the Arctic coastal salt marsh at La Pérouse Bay, Manitoba, a nitrogen (N) and phosphorus (P) fertilization experiment was conducted. The partitioning of carbon (C), N and P was measured from June 2003 to July 2004. Soil solution inorganic N and P results indicate that the system is strongly limited by N and, to a lesser extent by P. Results indicate that strong N-limitation and high concentrations of inorganic P compared to dissolved organic P moderate the release of phosphatases. Primary productivity is co-limited by N and P, while soil microbial biomass is limited by carbon. Plants and microbes compete for N, but not P, during the summer. Overall, there was a seasonal shift in the allocation of nutrients within the community, from a microbial dominated system in the winter to a plant-dominated system in the summer.
dc.identifier.citationThesis (M.Sc.) - University of Toronto, 2005. S.K. Hargreaves: Theses Canada, Amicus No. 32340687
dc.identifier.urihttp://hdl.handle.net/10315/13777
dc.publisherOttawa : National Library of Canada = Bibliothèque nationale du Canada
dc.rights.articlehttp://www.collectionscanada.gc.ca/obj/thesescanada/vol2/002/mr02449.pdf
dc.subjectLa Pérouse Bay
dc.subjectChurcill,Manitoba
dc.subjectWapusk National Park
dc.subjectEcology
dc.subjectNitrogen fertilization
dc.subjectPhosphorus fertilization
dc.subjectmicrobial dominated system
dc.subjectplant-dominated system
dc.titleNutrient Limitation of Plants and Soil Microbial Growth in an Arctic Coastal Salt Marsh.
dc.typeElectronic Thesis or Dissertation

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