Climate seasonality limits leaf carbon assimilation and wood productivity in tropical forests

Made available in DSpace on 2018-12-11T17:02:44Z (GMT). No. of bitstreams: 0 Previous issue date: 2016-04-28 The seasonal climate drivers of the carbon cycle in tropical forests remain poorly known, although these forests account for more carbon assimilation and storage than any other terrestrial ecosystem. Based on a unique combination of seasonal pan-tropical data sets from 89 experimental sites (68 include aboveground wood productivity measurements and 35 litter productivity measurements), their associated canopy photosynthetic capacity (enhanced vegetation index, EVI) and climate, we ask how carbon assimilation and aboveground allocation are related to climate seasonality in tropical forests and how they interact in the seasonal carbon cycle. We found that canopy photosynthetic capacity seasonality responds positively to precipitation when rainfall is < 2000ĝ€-mmĝ€-yrĝ'1 (water-limited forests) and to radiation otherwise (light-limited forests). On the other hand, independent of climate limitations, wood productivity and litterfall are driven by seasonal variation in precipitation and evapotranspiration, respectively. Consequently, light-limited forests present an asynchronism between canopy photosynthetic capacity and wood productivity. First-order control by precipitation likely indicates a decrease in tropical forest productivity in a drier climate in water-limited forest, and in current light-limited forest with future rainfall < 2000ĝ€-mmĝ€-yrĝ'1. Author(s) 2016. Remote Sensing Division National Institute for Space Research - INPE São José Dos Campos CIRAD UMR Ecologie des Forêts de Guyane INRA UMR EEF 1137 INRA UMR Ecologie des Forêts de Guyane Department of Biology University of Antwerp National Center for Monitoring and Early Warning of Natural Disasters - CEMADEN São José Dos Campos School of Geography University of Leeds Institute of Botany University of Hohenheim Laboratory for Wood Biology and Xylarium Royal Museum for Central Africa Programa de Pós-graduação em Ciências de Florestas Tropicais Instituto Nacional de Pesquisas da Amazônia Embrapa Florestas Brazilian Agricultural Research Corporation School of Biological Sciences University of Tasmania Institute of Geography University of Erlangen-Nuremberg Laboratory of Geo-information Science and Remote Sensing Wageningen University Centro de Ciências Biológicas e da Natureza Laboratóio de Botânica e Ecologia Vegetal Universidade Federal Do Acre Instituto Pirenaico de Ecologia Consejo Superior de Investigaciones Cientificas (IPE-CSIC) Instituto Boliviano de Investigacion Forestal (IBIF) Santa Cruz de la Sierra Centro de Energia Nuclear Na Agricultura Laboratóio de Ecologia Isotópica Universidade de SÃo Paulo Departamento de Botânica Universidade Federal Do Paraná Departamento de Botânica Universidade Federal de Juiz de Fora (UFJF) Programa de Pós-Graduação Ecologia e Manejo de Recursos Naturais Universidade Federal Do Acre Departamento de Ecologia Do Instituto de Biociências Universidade de São Paulo (USP) UMR 5174 Laboratoire Evolution et DiversitéBiologique CNRS and UniversitéPaul Sabatier Biological Sciences Department University of Zambia Department of Biology University of Missouri-St. Louis Coordenação de Pesquisas em Biodiversidade Instituto Nacional de Pesquisas da Amazônia Departamento de Engenharia Florestal Universidade Federal de Viçosa (UFV) Departamento de Engenharia Florestal Universidade Federal Do Paraná Centro de Ciêcias Biológicas e da Natureza Laboratório de Botânica e Ecologia Vegetal Universidade Federal Do Acre Prefeitura Municipal de Rio Branco Département Hommes Natures Sociétés Centre National de la Recherche Scientifique (CNRS) et UMR 208 Patrimoines Locaux et Gouvernance, Cedex 05 Dept. Forest and Wood Science University of Stellenbosch Meisterschule Ebern für das Schreinerhandwerk Floresta Estadual de Assis Tanzania Forestry Research Institute (TAFORI), P.O. Box Departamento de Ciências Florestais Universidade de São Paulo Escola Superior de Agricultura Luiz de Queiroz Departamento de Engenharia Florestal - DEF Universidade Estadual Do Centro-Oeste Departamento de Ciências Florestais Centro de Ciências Rurais Universidade Federal de Santa Maria Departamento de Botânica Laboratório de Fisiologia Vegeta Universidade de Brasília Instituto de Ciências Biológicas World Agroforestry Centre (ICRAF), P.O. Box Coordenação de Pesquisa em Ecologia Instituto Nacional de Pesquisas da Amazônia, C.P. 478 Departement of Land Resource Management Northern Territory Government Research Institute for Environment and Livelihoods Charles Darwin University Department of Biological Sciences Mount Holyoke College Department of Earth System Science Stanford University Department of Natural Resources and Environmental Sciences University of Illinois at Urbana Champaign Department of Plant Ecology Albrecht von Haller Institute of Plant Sciences University of Göttingen Departamento de Engenharia Florestal Universidade Do Estado de Santa Catarina - UDESC Tropical Peat Research Institute Biological Research Division Malaysian Palm Oil Board Departamento de Botânica Instituto de Ciências Biologicas Universidade Federal de Minas Gerais Division of Science and Environmental Policy California State University Monterey Bay Departamento de Biologia Universidade Federal de Sergipe Programa Forestal Colegio de Postgraduados Department of Geosciences and Geography University of Helsinki School of Geography and the Environment University of Oxford Departamento de Solos e Engenharia Agrícola Universidade Federal Do Paraná Laboratoria de Dendrochronologia y Anatomia de Maderas Espinoza Universidad Nacional de Loja Research Institute for the Environment and Livelihoods Charles Darwin University Center for Forest Disturbance Science USDA Forest Service Department of Biological Sciences Florida International University Graduate School of Agriculture Kyoto University Institut Français de Pondicherry UMR AMAP (BotAnique et BioinforMatique de l'Architecture des Plantes) IRD Tree Ring and Environmental History Laboratory Instituto Argentino de Nivología Glaciología y Ciencias Ambientales - CONICET Department of Earth and Environment Southeast Environmental Research Center Florida International University Departamento de Biologia Aplicada FCAV Universidade Estadual Paulista UNESP UR BandSEF (Biens et Services des Écosystèmes Forestiers Tropicaux) CIRAD School of Geosciences University of Edinburgh CarboForExpert HJ Andrews Experimental Forest Oregon State University Ibama PRONAT - Programa de Pós-Graduação em Recurso Naturais Universidade Federal de Roraima - UFRR School of Biological Sciences University of Aberdeen Departamento de Ciências Ambientais Universidade Federal Do Amapá Embrapa Cocais Brazilian Agricultural Research Corporation Instituto Boliviano de Investigacion Forestal (IBIF) Universidad Autonoma Gabriel René Moreno Department of Forest Vegetation Forestry and Forest Products Research Institute (FFPRI) Núcleo de Estudos e Pesquisas Ambientais (NEPAM) Universidade Estadual de Campinas (UNICAMP) Embrapa Roraima Brazilian Agricultural Research Corporation Crop Production Systems in the Tropics Georg-August-Universit Departamento de Engenharia Florestal Centro de Educação Superior Norte Universidade Federal de Santa Maria College of Life and Environmental Sciences University of Exeter Departamento de Biologia Aplicada FCAV Universidade Estadual Paulista UNESP