From tropics to tundra: Global convergence in plant functioning

Peter B. Reich, Michael B. Walters, David S. Ellsworth

Research output: Contribution to journalArticlepeer-review

1580 Scopus citations

Abstract

Despite striking differences in climate, soils, and evolutionary history among diverse biomes ranging from tropical and temperate forests to alpine tundra and desert, we found similar interspecific relationships among leaf structure and function and plant growth in all biomes. Our results thus demonstrate convergent evolution and global generality in plant functioning, despite the enormous diversity of plant species and biomes. For 280 plant species from two global data sets, we found that potential carbon gain (photosynthesis) and carbon loss (respiration) increase in similar proportion with decreasing leaf life-span, increasing leaf nitrogen concentration, and increasing leaf surface area-to-mass ratio. Productivity of individual plants and of leaves in vegetation canopies also changes in constant proportion to leaf life-span and surface area-to-mass ratio. These global plant functional relationships have significant implications for global scale modeling of vegetation-atmosphere CO2 exchange.

Original languageEnglish (US)
Pages (from-to)13730-13734
Number of pages5
JournalProceedings of the National Academy of Sciences of the United States of America
Volume94
Issue number25
DOIs
StatePublished - Dec 9 1997

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