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Science 27 January 2006:
Vol. 311. no. 5760, p. 432
DOI: 10.1126/science.311.5760.432j
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This Week in Science

Frequency-dependent models for the maintenance of high species diversity of trees in tropical forests predict that locally rare species survive preferentially when compared with common species. Wills et al (p. 527; see the news story by Pennisi) present a longitudinal survey of species frequencies from a network of large plots (50 hectares) in seven tropical forest sites in the Old and New Worlds. In all of the sites, the diversity of recruits into large size classes did increase as the forests aged. Forests suffering from limited, temporary disturbance should have the ability to recover former levels of diversity, and selection processes should favor increasing differences between species.




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Science. ISSN 0036-8075 (print), 1095-9203 (online)