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Science 31 October 1997:
Vol. 278. no. 5339, pp. 870 - 873
DOI: 10.1126/science.278.5339.870
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Reports

The Response of Global Terrestrial Ecosystems to Interannual Temperature Variability

B. H. Braswell, * D. S. Schimel, E. Linder, B. Moore III

Measurements of atmospheric carbon dioxide and satellite-derived measurements of temperature and the vegetation index were used to investigate relationships among climate, carbon dioxide, and ecosystems. At the global scale, lagged correlations between temperature and carbon dioxide growth rate were found, indicating modulation by biogeochemical feedbacks. Spatial analysis of the temperature and vegetation index data suggests that the global correlations are a composite of individualistic responses of different ecosystems. The existence of biome-specific time scales of response implies that changes in global ecosystem distributions could indirectly alter the relationships between climate and carbon storage.

B. H. Braswell and B. Moore III, Institute for the Study of Earth, Oceans, and Space, University of New Hampshire, Durham, NH 03824, USA.
D. S. Schimel, Ecosystem Dynamics and the Atmosphere, National Center for Atmospheric Research, Post Office Box 3000, Boulder, CO 80303, USA, and Natural Resource Ecology Laboratory, Colorado State University, Fort Collins, CO 80523, USA.
E. Linder, Department of Mathematics, University of New Hampshire, Durham, NH 03824, USA.
*   To whom correspondence should be addressed. E-mail: rob.braswell{at}unh.edu

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