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The strength of density‐dependent mortality is contingent on climate and seedling size
dc.contributor.authorSong, Xiaoyang
dc.contributor.authorJohnson, Daniel J.
dc.contributor.authorCao, Min
dc.contributor.authorUmaña, Maria Natalia
dc.contributor.authorDeng, Xiaobao
dc.contributor.authorYang, Xiaofei
dc.contributor.authorZhang, Wenfu
dc.contributor.authorYang, Jie
dc.date.accessioned2018-09-04T20:09:33Z
dc.date.available2019-09-04T20:15:39Zen
dc.date.issued2018-07
dc.identifier.citationSong, Xiaoyang; Johnson, Daniel J.; Cao, Min; Umaña, Maria Natalia ; Deng, Xiaobao; Yang, Xiaofei; Zhang, Wenfu; Yang, Jie (2018). "The strength of density‐dependent mortality is contingent on climate and seedling size." Journal of Vegetation Science 29(4): 662-670.
dc.identifier.issn1100-9233
dc.identifier.issn1654-1103
dc.identifier.urihttps://hdl.handle.net/2027.42/145578
dc.description.abstractQuestionsDensity‐dependent processes may promote species diversity in plant communities. Here, we tested whether seedling survival was density‐dependent and varied by seedling size, species and climatic factors.LocationTropical rain forest, Xishuangbanna, southwest China.MethodsGeneralized linear mixed‐effects models were used to examine seedling survival (232 tree species) across 9 years of seedling census data from a 20‐ha tropical forest dynamics plot. Our predictor variables were conspecific and heterospecific neighbour density, size of the seedling and annual variation in climatic factors.ResultsWe found significant negative effects of conspecific tree density, but positive effects of heterospecific seedling density on the survival of tree seedlings in this plot. In general, conspecific negative density dependence (CNDD) was observed most frequently for large size classes of seedlings (≥20‐cm high), while heterospecific positive density dependence (HPDD) was similar at all size classes. CNDD for large seedlings was stronger during warm years, and HPDD for large seedlings was stronger during dry years.ConclusionsOur study suggests that the strength of density dependence varied through time, and this strength was influenced by water availability and temperature. Our results highlight the potential for changes in species composition and species co‐existence that could result from increasing temperature‐strengthening CNDD effects and decreasing precipitation strengthening HPDD effects.In this study, we tested the correlation between the strength of density dependence and climatic conditions across 9 years of censuses. We found the strength of density dependence fluctuates and is significantly correlated with temperature and precipitation. Our study highlights the alteration of the strength of density dependence with climate change which will alter community composition in tropical forest.
dc.publisherWiley Periodicals, Inc.
dc.publisherPrinceton University Press
dc.subject.otherneighbour effect
dc.subject.otherseedling
dc.subject.othertemperature
dc.subject.othermixed models
dc.subject.othercompetition
dc.subject.otherdensity dependence
dc.subject.otherJanzen‐Connell hypothesis
dc.subject.otherprecipitation
dc.titleThe strength of density‐dependent mortality is contingent on climate and seedling size
dc.typeArticleen_US
dc.rights.robotsIndexNoFollow
dc.subject.hlbsecondlevelNatural Resources and Environment
dc.subject.hlbtoplevelScience
dc.description.peerreviewedPeer Reviewed
dc.description.bitstreamurlhttps://deepblue.lib.umich.edu/bitstream/2027.42/145578/1/jvs12645.pdf
dc.description.bitstreamurlhttps://deepblue.lib.umich.edu/bitstream/2027.42/145578/2/jvs12645_am.pdf
dc.description.bitstreamurlhttps://deepblue.lib.umich.edu/bitstream/2027.42/145578/3/jvs12645-sup-0001-AppendixS1.pdf
dc.identifier.doi10.1111/jvs.12645
dc.identifier.sourceJournal of Vegetation Science
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dc.owningcollnameInterdisciplinary and Peer-Reviewed


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