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dc.contributor.advisorSemlitsch, Raymond D.en_US
dc.contributor.authorEarl, Julia E.
dc.contributor.otherUniversity of Missouri-Columbia. Graduate School. Theses and Dissertations. Dissertations. 2012 Dissertationsen_US
dc.date.issued2012
dc.date.submitted2012 Summeren_US
dc.descriptionTitle from PDF of title page (University of Missouri--Columbia, viewed on October 26, 2012).en_US
dc.descriptionThe entire thesis text is included in the research.pdf file; the official abstract appears in the short.pdf file; a non-technical public abstract appears in the public.pdf file.en_US
dc.descriptionDissertation advisor: Dr. Raymond D. Semlitschen_US
dc.descriptionIncludes bibliographical references.en_US
dc.descriptionVita.en_US
dc.descriptionPh. D. University of Missouri-Columbia 2012.en_US
dc.descriptionDissertations, Academic -- University of Missouri--Columbia -- Biological sciences.en_US
dc.description"July 2012"en_US
dc.description.abstractSpatial subsidies are resources that move from one ecosystem to another. In aquatic systems, canopy cover determines both light availability and subsidy input in the form of senescing leaves. This phenomenon has been well studied in streams, and general patterns of ecosystem production, community structure, and the reciprocal export of animals have been discovered. I was interested in whether these patterns also occurred in ponds. I examined these patterns using experimental pond mesocosms and supported the results using an observational study of natural ponds. For the pond mesocosm experiment, I placed mesocosms along a canopy cover gradient and manipulated spatial subsidy input. I found a shift from net heterotrophy in closed canopy mesocosms to a balance between heterotrophy and autotrophy in open canopy mesocosms. The macroinvertebrate community structure responded to both canopy cover and subsidy input in mesocosms. The biomass of collectors (detritivores) was highest in mesocosms with litter input and increased with canopy cover, a pattern also present in natural ponds. Finally, I found that litter input increased the reciprocal export of amphibian biomass compared to no input. Amphibian biomass also decreased with increases in primary productivity. This research highlights the importance of spatial subsidies that connect different ecosystem types. Conserving these ecosystem connections will help maintain biodiversity and ecosystem function.en_US
dc.format.extentxiii, 185 pagesen_US
dc.identifier.otherEarlJ-071211-D16
dc.identifier.urihttp://hdl.handle.net/10355/15872
dc.publisherUniversity of Missouri--Columbiaen_US
dc.relation.ispartof2012 Freely available dissertations (MU)en_US
dc.subjectmacroinvertebrateen_US
dc.subjectecosystemen_US
dc.subjectcanopy coveren_US
dc.titleEffects of spatial subsidies and canopy cover on pond communities and multiple life stages in amphibiansen_US
dc.typeThesisen_US
thesis.degree.disciplineBiological scienceseng
thesis.degree.grantorUniversity of Missouri--Columbiaeng
thesis.degree.levelDoctoralen_US
thesis.degree.namePh. D.en_US


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