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Seedling Density Dependence Promotes Coexistence of Bornean Rain Forest Trees

1999; Wiley; Volume: 80; Issue: 6 Linguagem: Inglês

10.2307/176674

1939-9170

Campbell O. Webb, David R. Peart,

Wildlife Ecology and Conservation

EcologyVolume 80, Issue 6 p. 2006-2017 Article SEEDLING DENSITY DEPENDENCE PROMOTES COEXISTENCE OF BORNEAN RAIN FOREST TREES Campbell O. Webb, Campbell O. Webb Department of Biological Sciences, Dartmouth College, Hanover, New Hampshire 03755 USA Present address: The Arnold Arboretum of Harvard University, Harvard University Herbaria, 22 Divinity Avenue, Cambridge, Massachusetts 02138-2094 USA. E-mail: cwebb@oeb.harvard.eduSearch for more papers by this authorDavid R. Peart, David R. Peart Department of Biological Sciences, Dartmouth College, Hanover, New Hampshire 03755 USASearch for more papers by this author Campbell O. Webb, Campbell O. Webb Department of Biological Sciences, Dartmouth College, Hanover, New Hampshire 03755 USA Present address: The Arnold Arboretum of Harvard University, Harvard University Herbaria, 22 Divinity Avenue, Cambridge, Massachusetts 02138-2094 USA. E-mail: cwebb@oeb.harvard.eduSearch for more papers by this authorDavid R. Peart, David R. Peart Department of Biological Sciences, Dartmouth College, Hanover, New Hampshire 03755 USASearch for more papers by this author First published: 01 September 1999 https://doi.org/10.1890/0012-9658(1999)080[2006:SDDPCO]2.0.CO;2Citations: 83 Read the full textAboutPDF ToolsRequest permissionExport citationAdd to favoritesTrack citation ShareShare Give accessShare full text accessShare full-text accessPlease review our Terms and Conditions of Use and check box below to share full-text version of article.I have read and accept the Wiley Online Library Terms and Conditions of UseShareable LinkUse the link below to share a full-text version of this article with your friends and colleagues. Learn more.Copy URL Share a linkShare onFacebookTwitterLinked InRedditWechat Abstract Density-dependent processes may occur at various spatial scales and may be generated by, and influence, various life stages in a population. When evaluating evidence for density dependence relevant to species coexistence, the nature of forest communities leads logically to a focus on particular scales and life stages. We assessed evidence for the dependence of seedling survival on the abundance of conspecific trees and seedlings over both wide (150-ha) and local (0.16-ha and 1-m2) scales, in a species-rich Bornean rain forest. At the 150-ha scale, we identified a community-level compensatory trend in seedling survival (i.e., more abundant species had higher seedling mortality). There were parallel trends at the population level and on a local scale; seedling survival was inversely related to conspecific seedling density (in 1-m2 quadrats) and tree basal area (in the surrounding 0.16 ha), for five out of 15 abundant species and for all species combined. As expected, seedlings of species with the highest adult abundance in 150 ha experienced the highest local densities of both conspecific seedlings and trees. Local density dependence in single-species analyses confirmed a dynamic interpretation of the community compensatory trend, i.e., that wide-scale seedling survival tends to decrease as a species' adult abundance increases. Taken together, our findings constitute strong evidence that density-dependent processes contribute to coexistence in this diverse rain forest community. Citing Literature Volume80, Issue6September 1999Pages 2006-2017 RelatedInformation