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Science 3 November 1995:
Vol. 270. no. 5237, pp. 778 - 780
DOI: 10.1126/science.270.5237.778
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Reports
Carbon Dioxide Uptake by an Undisturbed Tropical Rain Forest in
Southwest Amazonia, 1992 to 1993
John Grace (1),
Jon Lloyd,
John McIntyre,
Antonio C. Miranda,
Patrick Meir,
Heloisa S. Miranda,
Carlos Nobre,
John Moncrieff,
Jon Massheder,
Yadvinder Malhi,
Ivan Wright,
John Gash
Measurements of carbon dioxide flux over undisturbed tropical rain
forest in Brazil for 55 days in the wet and dry seasons of 1992 to 1993
show that this ecosystem is a net absorber of carbon dioxide.
Photosynthetic gains of carbon dioxide exceeded respiratory losses
irrespective of the season. These gains cannot be attributed to
measurement error, nor to loss of carbon dioxide by drainage of cold
air at night. A process-based model, fitted to the data, enabled
estimation of the carbon absorbed by the ecosystem over the year as 8.5
± 2.0 moles per square meter per year.
J. Grace, J. McIntyre, P. Meir, J. Moncrieff, J. Massheder, Y.
Malhi, Institute of Ecology and Resource Management, University of
Edinburgh, Edinburgh EH9 3JU, UK.
J. Lloyd, Environmental Biology Group, Research School of
Biological Sciences, Institute of Advanced Studies, Australian National
University, Canberra ACT 2601, Australia.
A. C. Miranda and H. S. Miranda, Laboratorio de Ecologia, Universidade
de Brasilia, Brasilia, Brazil.
C. Nobre, Instituto National de Pesquisas Espaciais-CPTECH, Caixa
Postal 001, 12.630-000 Cachoera Paulista, São Paulo, Brazil.
I. Wright and J. Gash, Institute of Hydrology, Wallingford, OX10 8BB,
UK.
(1) To whom correspondence should be addressed.
THIS ARTICLE HAS BEEN CITED BY OTHER ARTICLES:
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317, 1233-1236
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- Weak Northern and Strong Tropical Land Carbon Uptake from Vertical Profiles of Atmospheric CO2.
- B. B. Stephens, K. R. Gurney, P. P. Tans, C. Sweeney, W. Peters, L. Bruhwiler, P. Ciais, M. Ramonet, P. Bousquet, T. Nakazawa, et al. (2007)
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316, 1732-1735
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- From The Cover: Drought stress and carbon uptake in an Amazon forest measured with spaceborne imaging spectroscopy.
- G. P. Asner, D. Nepstad, G. Cardinot, and D. Ray (2004)
PNAS
101, 6039-6044
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- Carbon in Amazon Forests: Unexpected Seasonal Fluxes and Disturbance-Induced Losses.
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- Tropical rain forests.
- D. M. J. S. Bowman (2000)
Progress in Physical Geography
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- Changes in the Carbon Balance of Tropical Forests: Evidence from Long-Term Plots.
- O. L. Phillips, Y. Malhi, N. Higuchi, W. F. Laurance, P. V. Núñez, R. M. Vásquez, S. G. Laurance, L. V. Ferreira, M. Stern, S. Brown, et al. (1998)
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