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dc.contributor.advisorBohannan, B. J. M.en_US
dc.contributor.authorWilson, Hannahen_US
dc.date.accessioned2013-07-11T19:58:49Z
dc.date.available2013-07-11T19:58:49Z
dc.date.issued2013-07-11
dc.identifier.urihttp://hdl.handle.net/1794/12968
dc.description.abstractArbuscular mycorrhizal fungi (AMF) provide numerous services to their plant symbionts. Understanding the effects of climate change on AMF, and the resulting plant responses, is a crucial factor in predicting ecosystem responses on a global scale. We used a manipulative climate change experiment embedded within a natural climate gradient in Oregon and Washington to examine how the effects of future climate change on AMF-plant symbioses are mediated by soil water availability, soil nutrient availability, and vegetation dynamics. Using structural equation modeling, we found that the direct effect of increasing temperatures was to decrease AMF colonization. Indirect effects of temperature, mediated through other variables, canceled each other out. However, future shifts in these relationships could either exacerbate or mitigate the negative direct effect of temperature. As ecosystems in Mediterranean climates experience more intense droughts and heavier rains, decreases in AMF colonization could have substantial consequences for plant communities and ecosystem function.en_US
dc.language.isoen_USen_US
dc.publisherUniversity of Oregonen_US
dc.rightsAll Rights Reserved.en_US
dc.subjectarbuscular mycorrhizal fungien_US
dc.subjectclimateen_US
dc.subjectforbsen_US
dc.subjectMediterraneanen_US
dc.subjectPacific Northwesten_US
dc.subjectprairieen_US
dc.titleClimate Change Effects on Arbuscular Mycorrhizal Fungi and Prairie Plants Along a Mediterranean Climate Gradienten_US
dc.typeElectronic Thesis or Dissertationen_US
thesis.degree.nameM.S.en_US
thesis.degree.levelmastersen_US
thesis.degree.disciplineDepartment of Biologyen_US
thesis.degree.grantorUniversity of Oregonen_US


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