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Journal Article

Species Diversity Is Dynamic and Unbounded at Local and Continental Scales

Luke J. Harmon and Susan Harrison
The American Naturalist
Vol. 185, No. 5 (May 2015), pp. 584-593
DOI: 10.1086/680859
Stable URL:
Page Count: 10
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AbstractWe argue that biotas at scales from local communities to entire continents are nearly always open to new species and that their diversities are far from any ecological limits. We show that the fossil, phylogenetic, and morphological evidence that has been used to suggest that ecological processes set limits to diversity in evolutionary time is weak and inconsistent. At the same time, ecological evidence from biological invasions, experiments, and diversity analyses strongly supports the openness of communities to new species. We urge evolutionary biologists to recognize that ecology has largely moved beyond simple notions of equilibrium at a carrying capacity and toward a richer view of communities as highly dynamic in space and time.

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This item contains 94 references.

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