Productivity is a poor predictor of plant species richness

Science
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Abstract

For more than 30 years, the relationship between net primary productivity and species richness has generated intense debate in ecology about the processes regulating local diversity. The original view, which is still widely accepted, holds that the relationship is hump-shaped, with richness first rising and then declining with increasing productivity. Although recent meta-analyses questioned the generality of hump-shaped patterns, these syntheses have been criticized for failing to account for methodological differences among studies. We addressed such concerns by conducting standardized sampling in 48 herbaceous-dominated plant communities on five continents. We found no clear relationship between productivity and fine-scale (meters−2) richness within sites, within regions, or across the globe. Ecologists should focus on fresh, mechanistic approaches to understanding the multivariate links between productivity and richness.

Publication type Article
Publication Subtype Journal Article
Title Productivity is a poor predictor of plant species richness
Series title Science
DOI 10.1126/science.1204498
Volume 333
Issue 6050
Year Published 2011
Language English
Publisher American Association for the Advancement of Science
Publisher location Washington, D.C.
Contributing office(s) Forest and Rangeland Ecosystem Science Center, National Wetlands Research Center
Description 4 p.
First page 1750
Last page 1753
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