DROUGHT RESISTANCE IN TROPICAL TREES: TRAITS, TRADE-OFFS, AND INTER- AND INTRASPECIFIC INTERACTIONS

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dc.contributor.advisorSwenson, Nathan G.en_US
dc.contributor.authorPetprakob, Krittikaen_US
dc.contributor.departmentBehavior, Ecology, Evolution and Systematicsen_US
dc.contributor.publisherDigital Repository at the University of Marylanden_US
dc.contributor.publisherUniversity of Maryland (College Park, Md.)en_US
dc.date.accessioned2021-02-14T06:33:06Z
dc.date.available2021-02-14T06:33:06Z
dc.date.issued2020en_US
dc.description.abstractAnthropogenic climate change is predicted to result in more frequent and severe drought in the tropics. This novel climatic condition could cause changes in tropical forest tree community structure and dynamics which will, in turn, influence their function as a climate change mitigator. Because drought-induced changes in tree communities are the outcome of the collective performance differences of individual species, understanding the causes of variation in performance among tree species in response to soil water variation will benefit our understanding of tree community responses to the future climate changes. It is the objective of this dissertation to investigate the mechanisms determining the growth and mortality of tropical tree species in response to water availability. Growth and mortality of an individual tree is the result of the interactions between the traits of an individual and its biotic and abiotic environments. In chapter 2 of this dissertation, I quantify a suite of traits in tropical tree species and examine their contributions to the interspecific variation of drought-induced mortality resistance and their distribution along a soil water availability gradient in a permanent forest dynamic plot. In chapter 3, I investigate how drought resistance traits lead to variation in growth and mortality responses among tropical tree species to water availability gradients. In the last chapter, I show that the growth and mortality of the tree species are influenced by the interactive effect of biotic and abiotic factors and drought resistance traits of individual trees mediate the strength of the effect of neighbor density on their performances along a water availability gradient. Overall, the results of this dissertation emphasize the importance of drought resistance traits in facilitating our understanding and prediction of the responses of the tropical tree communities to future climate change.en_US
dc.identifierhttps://doi.org/10.13016/mmym-tyw0
dc.identifier.urihttp://hdl.handle.net/1903/26796
dc.language.isoenen_US
dc.subject.pqcontrolledEcologyen_US
dc.subject.pqcontrolledBiologyen_US
dc.subject.pqcontrolledPlant sciencesen_US
dc.subject.pquncontrolledCommunity ecologyen_US
dc.subject.pquncontrolledDemographyen_US
dc.subject.pquncontrolledDrought resistanceen_US
dc.subject.pquncontrolledFunctional traitsen_US
dc.subject.pquncontrolledTrade-offsen_US
dc.subject.pquncontrolledTropical foresten_US
dc.titleDROUGHT RESISTANCE IN TROPICAL TREES: TRAITS, TRADE-OFFS, AND INTER- AND INTRASPECIFIC INTERACTIONSen_US
dc.typeDissertationen_US

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