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Drought-mortality relationships for tropical forests
- Source :
- New Phytologist, New Phytologist, Wiley, 2010, 187, pp.631-646, Repositório Institucional do INPA, Instituto Nacional de Pesquisas da Amazônia (INPA), instacron:INPA, New Phytologist, Wiley, 2010, 187 (3), pp.631-646. ⟨10.1111/j.1469-8137.2010.03359.x⟩, New Phytologist, ISSN 0028-646X, 2010-08, Vol. 187, No. 3, New phytologist, 187(3), 631-646. Wiley Online Library, Archivo Digital UPM, Universidad Politécnica de Madrid
- Publication Year :
- 2010
-
Abstract
- The rich ecology of tropical forests is intimately tied to their moisture status. Multi-site syntheses can provide a macro-scale view of these linkages and their susceptibility to changing climates. Here, we report pan-tropical and regional-scale analyses of tree vulnerability to drought. We assembled available data on tropical forest tree stem mortality before, during, and after recent drought events, from 119 monitoring plots in 10 countries concentrated in Amazonia and Borneo. In most sites, larger trees are disproportionately at risk. At least within Amazonia, low wood density trees are also at greater risk of drought-associated mortality, independent of size. For comparable drought intensities, trees in Borneo are more vulnerable than trees in the Amazon. There is some evidence for lagged impacts of drought, with mortality rates remaining elevated 2 yr after the meteorological event is over. These findings indicate that repeated droughts would shift the functional composition of tropical forests toward smaller, denser-wooded trees. At very high drought intensities, the linear relationship between tree mortality and moisture stress apparently breaks down, suggesting the existence of moisture stress thresholds beyond which some tropical forests would suffer catastrophic tree mortality. © The Authors (2010). Journal compilation © New Phytologist Trust (2010).
- Subjects :
- 0106 biological sciences
Data Interpretation
Time Factors
010504 meteorology & atmospheric sciences
Physiology
[SDV]Life Sciences [q-bio]
Rain
F62 - Physiologie végétale - Croissance et développement
Plant Science
01 natural sciences
LAGS MORTALITY
Tropic Climate
Trees
AMAZON
Borneo
Tropical climate
K01 - Foresterie - Considérations générales
Silvicultura
Biomass
Forêt tropicale humide
DROUGHT
ComputingMilieux_MISCELLANEOUS
Biomass (ecology)
Plant Stems
Amazon rainforest
Ecology
Moisture stress
food and beverages
Adaptation, Physiological
Wood
Droughts
Geography
Drought Stress
Tree
Brazil
Woody plant
[SDE.MCG]Environmental Sciences/Global Changes
Climate Change
Vulnerability
RAINFOR
BORNEO
Arbre
010603 evolutionary biology
Risk Assessment
Models, Biological
Plant Stem
Time
Biological Model
Amazonia
Stress, Physiological
Forest ecology
parasitic diseases
TROPICS
Moisture Content
Tropical Forest
Ecosystem
Mortality
Adaptation
0105 earth and related environmental sciences
Tropical Climate
Drought
Brasil
fungi
Tropics
Water
15. Life on land
Medio Ambiente
Résistance à la sécheresse
Growth, Development And Aging
METIS-272981
H50 - Troubles divers des plantes
Subjects
Details
- ISSN :
- 14698137 and 0028646X
- Volume :
- 187
- Issue :
- 3
- Database :
- OpenAIRE
- Journal :
- The New phytologist
- Accession number :
- edsair.doi.dedup.....8e6c612dd80b579a0edac729f0148a23