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Rapid decay of tree-community composition in Amazonian forest fragments

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dc.contributor.author Laurance, William F. en
dc.contributor.author Nascimento, Henrique E. M. en
dc.contributor.author Laurance, Susan G. en
dc.contributor.author Andrade, Ana C. S. en
dc.contributor.author Ribeiro, Jose E. L. S. en
dc.contributor.author Giraldo, Juan Pablo en
dc.contributor.author Lovejoy, Thomas E. en
dc.contributor.author Condit, Richard S. en
dc.contributor.author Chave, Jerome en
dc.contributor.author Harms, Kyle Edward en
dc.contributor.author D'Angelo, Sammya Agra en
dc.date.accessioned 2012-08-08T12:40:38Z
dc.date.available 2012-08-08T12:40:38Z
dc.date.issued 2006
dc.identifier.citation Laurance, William F., Nascimento, Henrique E. M., Laurance, Susan G., Andrade, Ana C. S., Ribeiro, Jose E. L. S., Giraldo, Juan Pablo, Lovejoy, Thomas E., Condit, Richard S., Chave, Jerome, Harms, Kyle Edward, and D'Angelo, Sammya Agra. 2006. "<a href="https://repository.si.edu/handle/10088/18715">Rapid decay of tree-community composition in Amazonian forest fragments</a>." <em>Proceedings of the National Academy of Sciences of the United States of America</em>. 103 (50):19010&ndash;19014. <a href="https://doi.org/10.1073/pnas.0609048103">https://doi.org/10.1073/pnas.0609048103</a> en
dc.identifier.issn 0027-8424
dc.identifier.uri http://hdl.handle.net/10088/18715
dc.description.abstract Forest fragmentation is considered a greater threat to vertebrates than to tree communities because individual trees are typically long-lived and require only small areas for survival. Here we show that forest fragmentation provokes surprisingly rapid and profound alterations in Amazonian tree-community composition. Results were derived from a 22-year study of exceptionally diverse tree communities in 40 1-ha plots in fragmented and intact forests, which were sampled repeatedly before and after fragment isolation. Within these plots, trajectories of change in abundance were assessed for 267 genera and 1,162 tree species. Abrupt shifts in floristic composition were driven by sharply accelerated tree mortality and recruitment within100mof fragment margins, causing rapid species turnover and population declines or local extinctions of many large-seeded, slow-growing, and old-growth taxa; a striking increase in a smaller set of disturbance-adapted and abiotically dispersed species; and ignificant shifts in tree size distributions. Even among old-growth trees, species composition in fragments is being restructured substantially, with subcanopy species that rely on animal seed-dispersers and have obligate outbreeding being the most strongly disadvantaged. These diverse changes in tree communities are likely to have wide-ranging impacts on forest architecture, canopy-gap dynamics, plant animal interactions, and forest carbon storage. en
dc.relation.ispartof Proceedings of the National Academy of Sciences of the United States of America en
dc.title Rapid decay of tree-community composition in Amazonian forest fragments en
dc.type Journal Article en
dc.identifier.srbnumber 110838
dc.identifier.doi 10.1073/pnas.0609048103
rft.jtitle Proceedings of the National Academy of Sciences of the United States of America
rft.volume 103
rft.issue 50
rft.spage 19010
rft.epage 19014
dc.description.SIUnit STRI en
dc.citation.spage 19010
dc.citation.epage 19014


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