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Title: Amazonian tree mortality during the 1997 El Nino drought
Authors: Williamson, G. Bruce
Laurance, William F.
Oliveira, Alexandre Adalardo de
Delamônica, Patricia
Gascon, Claude
Lovejoy, Thomas E.
Pohl, Luciano
Keywords: Drought Stress
El Nino
Extreme Event
South America
Issue Date: 2000
metadata.dc.publisher.journal: Conservation Biology
metadata.dc.relation.ispartof: Volume 14, Número 5, Pags. 1538-1542
Abstract: In 1997, the Amazon Basin experienced an exceptionally severe El Nino drought. We assessed effects of this rare event on mortality rates of trees in intact rain forest based on data from permanent plots. Long-term (5- to 13-year) mortality rates averaged only 1.12% per year prior to the drought. During the drought year, annual mortality jumped to 1.91% but abruptly fell back to 1.23% in the year following El Nino. Trees dying during the drought did not differ significantly in size or species composition from those that died previously, and there was no detectable effect of soil texture on mortality rates. These results suggest that intact Amazonian rainforests are relatively resistant to severe El Nino events.
metadata.dc.identifier.doi: 10.1046/j.1523-1739.2000.99298.x
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