The effects of partial throughfall exclusion on canopy processes, aboveground production, and biogeochemistry of an Amazon forest

23 de outubro de 2002

out 23, 2002

Daniel C. Nepstad, Paulo Moutinho, Moacyr B. Dias-Filho, Eric Davidson, Gina Cardinot, Daniel Markewitz, Ricardo Figueiredo, Noemi Vianna, J. Chambers, David Ray, J. B. Guerreiros, Paul Lefebvre, Leonel Sternberg, Marcelo Moreira, L. Barros, Françoise Y. Ishida, I. Tohlver, E. Belk, Kemel Kalif, Karen Schwalbe

Moist tropical forests in Amazonia and elsewhere are subjected to increasingly severe drought episodes through the El Niño–Southern Oscillation (ENSO) and possibly through deforestation-driven reductions in rainfall. The effects of this trend on tropical forest canopy dynamics, emissions of greenhouse gases, and other ecological functions are potentially large but poorly understood. We established a throughfall exclusion experiment in an east-central Amazon forest (Tapajo´s National Forest, Brazil) to help understand these effects.

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Unexpected results of a pilot throughfall exclusion experiment on soil emissions of CO2, CH4, N2O, and NO in eastern Amazonia

Unexpected results of a pilot throughfall exclusion experiment on soil emissions of CO2, CH4, N2O, and NO in eastern Amazonia

The eastern Amazon Basin may become drier as a result of less regional recirculation of water in a largely deforested landscape and because of increased frequency and intensity of El Niño events induced by global warming. Drier conditions may affect several plant...