Climatic variability and vegetation vulnerability in Amazônia
Article first published online: 24 DEC 2005
Copyright 2005 by the American Geophysical Union.
Geophysical Research Letters
Volume 32, Issue 24, December 2005
How to Cite
2005), Climatic variability and vegetation vulnerability in Amazônia, Geophys. Res. Lett., 32, L24712, doi:10.1029/2005GL024981., , , , , and (
- Issue published online: 24 DEC 2005
- Article first published online: 24 DEC 2005
- Manuscript Accepted: 16 NOV 2005
- Manuscript Received: 18 OCT 2005
 Models of climate change predict close coupling between increases in aridity and conversion of Amazonian forests to savanna. Here we assess the vulnerability and resilience of Amazonian vegetation to climate change by analyzing observed climate-vegetation relationships using climate data, observed vegetation distributions, and evapotranspiration rates inferred from eddy flux data. We found that drought frequency is an excellent predictor of the forest-savanna boundary, indicating the key role of extreme climatic events for inducing vegetation change, and highlighting particularly vulnerable regions of Amazônia.