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Title: Drought-mortality relationships for tropical forests
Authors: Phillips, Oliver L.
Van Der Heijden, Geertje M.F.
Lewis, Simon L.
Lopez-Gonzalez, Gabriela
Aragao, L. E.O.C.
Lloyd, Jon
Malhi, Yadvinder Singh
Monteagudo, Abel Lorenzo
Almeida, Samuel Miranda
Dávila, Esteban Álvarez
Amaral, Iêda Leão do
Andelman, Sandy J.
Andrade, Ana C.S.
Arroyo, Luzmila P.
Aymard, Gerardo Antonio C.
Baker, Timothy R.
Blanc, Lilian
Bonal, Damien
Oliveira, Átila Cristina Alves de
Chao, Kuo Jung
Cardozo, Nallaret Dávila
Costa, Antônio Carlos Lôla da
Feldpausch, Ted R.
Fisher, Joshua B.
Fyllas, Nikolaos M.
Freitas, Maria Antonio Benjamin
Galbraith, David R.
Gloor, Manuel E.
Higuchi, Niro
Honorio Coronado, Euridice N.
Jiménez, E. M.
Keeling, Helen C.
Killeen, Timothy J.
Lovett, Jon C.
Meir, Patrick W.
Mendoza, Casimiro
Morel, Alexandra C.
Vargas, Percy Núñez
Patiño, Sandra
Peh, Kelvin S.H.
Cruz, Antonio Peña
Prieto, Adriana
Quesada, Carlos Alberto
Ramirez Arevalo, Fredy Francisco
Ramírez, Hirma
Rudas, Agustín
Salamão, Rafael
Schwarz, Michael
Silva, Javier Natalino M.
Silveira, Marcos
Slik, J. W.Ferry
Sonké, Bonaventure
Thomas, Anne Sota
Stropp, Juliana
Taplin, James R.D.
Vásquez, Rodolfo V.
Vilanova, Emilio
Keywords: Climate Change
Data Interpretation
Drought Stress
Moisture Content
Risk Assessment
Tropical Forest
Biological Model
Growth, Development And Aging
Stress, Physiological
Plant Stem
Tropic Climate
Adaptation, Physiological
Models, Biological
Plant Stems
Stress, Physiological
Time Factors
Tropical Climate
Issue Date: 2010
metadata.dc.publisher.journal: New Phytologist
metadata.dc.relation.ispartof: Volume 187, Número 3, Pags. 631-646
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).
metadata.dc.identifier.doi: 10.1111/j.1469-8137.2010.03359.x
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