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Climate drivers of the Amazon forest greening.
Wagner, Fabien Hubert; Hérault, Bruno; Rossi, Vivien; Hilker, Thomas; Maeda, Eduardo Eiji; Sanchez, Alber; Lyapustin, Alexei I; Galvão, Lênio Soares; Wang, Yujie; Aragão, Luiz E O C.
Afiliación
  • Wagner FH; Remote Sensing Division, National Institute for Space Research - INPE, São José dos Campos 12227-010, SP, Brazil.
  • Hérault B; CIRAD, UMR Ecologie des Forêts de Guyane, Kourou 97379, France.
  • Rossi V; UR B&SEF Biens et services des écosystèmes forestiers tropicaux, CIRAD, Yaoundé BP 2572, Cameroon.
  • Hilker T; Department of Geography and Environment, University of Southampton, Southampton SO17 1BJ, United Kingdom.
  • Maeda EE; Department of Environmental Sciences, University of Helsinki, Helsinki, FI-00014, Finland.
  • Sanchez A; Earth System Science Center, National Institute for Space Research - INPE, São José dos Campos 12227-010, SP, Brazil.
  • Lyapustin AI; Goddard Space Flight Center, NASA, Greenbelt, MD 20771, United States of America.
  • Galvão LS; Remote Sensing Division, National Institute for Space Research - INPE, São José dos Campos 12227-010, SP, Brazil.
  • Wang Y; Goddard Space Flight Center, NASA, Greenbelt, MD 20771, United States of America.
  • Aragão LEOC; Remote Sensing Division, National Institute for Space Research - INPE, São José dos Campos 12227-010, SP, Brazil.
PLoS One ; 12(7): e0180932, 2017.
Article en En | MEDLINE | ID: mdl-28708897
Our limited understanding of the climate controls on tropical forest seasonality is one of the biggest sources of uncertainty in modeling climate change impacts on terrestrial ecosystems. Combining leaf production, litterfall and climate observations from satellite and ground data in the Amazon forest, we show that seasonal variation in leaf production is largely triggered by climate signals, specifically, insolation increase (70.4% of the total area) and precipitation increase (29.6%). Increase of insolation drives leaf growth in the absence of water limitation. For these non-water-limited forests, the simultaneous leaf flush occurs in a sufficient proportion of the trees to be observed from space. While tropical cycles are generally defined in terms of dry or wet season, we show that for a large part of Amazonia the increase in insolation triggers the visible progress of leaf growth, just like during spring in temperate forests. The dependence of leaf growth initiation on climate seasonality may result in a higher sensitivity of these ecosystems to changes in climate than previously thought.
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Asunto principal: Clima Tropical / Bosques País/Región como asunto: America do sul / Brasil Idioma: En Revista: PLoS One Asunto de la revista: CIENCIA / MEDICINA Año: 2017 Tipo del documento: Article País de afiliación: Brasil Pais de publicación: Estados Unidos
Texto completo
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Asunto principal: Clima Tropical / Bosques País/Región como asunto: America do sul / Brasil Idioma: En Revista: PLoS One Asunto de la revista: CIENCIA / MEDICINA Año: 2017 Tipo del documento: Article País de afiliación: Brasil Pais de publicación: Estados Unidos