Carbon in Amazon Forests: Unexpected Seasonal Fluxes and Disturbance-Induced Losses

@article{Saleska2003CarbonIA,
  title={Carbon in Amazon Forests: Unexpected Seasonal Fluxes and Disturbance-Induced Losses},
  author={Scott R. Saleska and Scott D. Miller and Daniel Michael Matross and Michael L. Goulden and Steven C. Wofsy and Humberto R. da Rocha and Pl{\'i}nio Barbosa de Camargo and Patrick M. Crill and Bruce C. Daube and Helber C de Freitas and Lucy R. Hutyra and Michael Keller and Volker Kirchhoff and Mary Menton and J. William Munger and Elizabeth Hammond Pyle and Amy H Rice and Hudson Silva},
  journal={Science},
  year={2003},
  volume={302},
  pages={1554 - 1557}
}
The net ecosystem exchange of carbon dioxide was measured by eddy covariance methods for 3 years in two old-growth forest sites near Santarém, Brazil. Carbon was lost in the wet season and gained in the dry season, which was opposite to the seasonal cycles of both tree growth and model predictions. The 3-year average carbon loss was 1.3 (confidence interval: 0.0 to 2.0) megagrams of carbon per hectare per year. Biometric observations confirmed the net loss but imply that it is a transient… 
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The results suggest that moisture has an important role in determining the Amazonian carbon balance, and the Amazon may become an increasing carbon source as a result of both emissions from fires and the suppression of net biome exchange by drought.
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