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dc.contributor.authorPOWELL, T. I.pt_BR
dc.contributor.authorGALBRAITH, D. R.pt_BR
dc.contributor.authorCHRISTOFFERSEN, B. O.pt_BR
dc.contributor.authorHARPER, A.pt_BR
dc.contributor.authorIMBUZEIRO, H. M. A.pt_BR
dc.contributor.authorROWLAND, L.pt_BR
dc.contributor.authorALMEIDA, S.pt_BR
dc.contributor.authorBRANDO, P. M.pt_BR
dc.contributor.authorCOSTA, A. C. L. dapt_BR
dc.contributor.authorCOSTA, M. H.pt_BR
dc.contributor.authorLEVINE, N. M.pt_BR
dc.contributor.authorMALHI, Y.pt_BR
dc.contributor.authorSALESKA, S. R.pt_BR
dc.contributor.authorSOTTA, E.pt_BR
dc.contributor.authorWILLIAMS, M.pt_BR
dc.contributor.authorMEIR, P.pt_BR
dc.contributor.authorMOORCROFT, P. R.pt_BR
dc.date.accessioned2013-09-04T11:11:11Zpt_BR
dc.date.available2013-09-04T11:11:11Zpt_BR
dc.date.created2013-09-04pt_BR
dc.date.issued2013pt_BR
dc.identifier.citationNew Phytologist, Cambridge, Jul. 2013.pt_BR
dc.identifier.urihttp://www.alice.cnptia.embrapa.br/alice/handle/doc/965567pt_BR
dc.descriptionConsiderable uncertainty surrounds the fate of Amazon rainforests in response to climate change. Here, carbon (C) flux predictions of five terrestrial biosphere models (Community Land Model version 3.5 (CLM3.5), Ecosystem Demography model version 2.1 (ED2), Integrated BIosphere Simulator version 2.6.4 (IBIS), Joint UK Land Environment Simulator version 2.1 (JULES) and Simple Biosphere model version 3 (SiB3)) and a hydrodynamic terrestrial ecosystem model (the Soil?Plant?Atmosphere (SPA) model) were evaluated against measurements from two large-scale Amazon drought experiments. Model predictions agreed with the observed C fluxes in the control plots of both experiments, but poorly replicated the responses to the drought treatments. Most notably, with the exception of ED2, the models predicted negligible reductions in aboveground biomass in response to the drought treatments, which was in contrast to an observed c. 20% reduction at both sites. For ED2, the timing of the decline in aboveground biomass was accurate, but the magnitude was too high for one site and too low for the other. Three key findings indicate critical areas for future research and model development. First, the models predicted declines in autotrophic respiration under prolonged drought in contrast to measured increases at one of the sites. Secondly, models lacking a phenological response to drought introduced bias in the sensitivity of canopy productivity and respiration to drought. Thirdly, the phenomenological water-stress functions used by the terrestrial biosphere models to represent the effects of soil moisture on stomatal conductance yielded unrealistic diurnal and seasonal responses to drought.pt_BR
dc.language.isoengeng
dc.rightsopenAccesseng
dc.subjectTropical rainforestpt_BR
dc.subjectCiclo do cabonopt_BR
dc.subjectModelo de biosfera terrestrept_BR
dc.subjectTerrestrial biosphere modelpt_BR
dc.titleConfronting model predictions of carbon fluxes with measurements of Amazon forests subjected to experimental drought.pt_BR
dc.typeArtigo de periódicopt_BR
dc.date.updated2013-09-04T11:11:11Zpt_BR
dc.subject.thesagroFloresta tropicalpt_BR
dc.subject.nalthesauruscarbon cyclept_BR
riaa.ainfo.id965567pt_BR
riaa.ainfo.lastupdate2013-09-04pt_BR
dc.contributor.institutionThomas L. Powell, Department of Organismic and Evolutionary Biology, Harvard University, Cambridge, MA 02138, USApt_BR
dc.contributor.institutionDavid R. Galbraith, School of Geography, University of Leeds, Leeds, LS2 9JT, UKpt_BR
dc.contributor.institutionEnvironmental Change Institute, School of Geography and the Environment, University of Oxford, Oxford, OX1 3QY, UKpt_BR
dc.contributor.institutionBradley O. Christoffersen, Department of Ecology and Evolutionary Biology, University of Arizona, Tucson, AZ 85721, USApt_BR
dc.contributor.institutionAnna Harper, College of Engineering, Mathematics, and Physical Science, University of Exeter, Exeter, EX4 4QF, UKpt_BR
dc.contributor.institutionDepartment of Atmospheric Science, Colorado State University, Fort Collins, CO 80523, USApt_BR
dc.contributor.institutionHewlley M. A. Imbuzeiro, Grupo de Pesquisas em Interação Atmosfera-Biosfera, Universidade Federal de Vicosa, Vicosa, CEP 36570-000, Minas Gerias, Brazilpt_BR
dc.contributor.institutionLucy Rowland, School of GeoSciences, University of Edinburgh, Edinburgh, EH8 9XP, UKpt_BR
dc.contributor.institutionSamuel Almeida, Museu Paraense Emilio Goeldi, Belem, CEP 66077-530, Para, Brazilpt_BR
dc.contributor.institutionPaulo M. Brando, Instituto de Pesquisa Ambiental da Amazônia, CEP 71503-505, Brasilia, Distrito Federal, Brazilpt_BR
dc.contributor.institutionAntonio Carlos Lola da Costa, Centro de Geociências, Universidade Federal do Para, Belem, CEP 66017-970, Para, Brazilpt_BR
dc.contributor.institutionMarcos Heil Costa, Grupo de Pesquisas em Interac~ao Atmosfera-Biosfera, Universidade Federal de Vicosa, Vicosa, CEP 36570-000, Minas Gerias, Brazilpt_BR
dc.contributor.institutionNaomi M. Levine, Department of Organismic and Evolutionary Biology, Harvard University, Cambridge, MA 02138, USApt_BR
dc.contributor.institutionYadvinder Malhi, Environmental Change Institute, School of Geography and the Environment, University of Oxford, Oxford, OX1 3QY, UKpt_BR
dc.contributor.institutionScott R. Saleska, Department of Ecology and Evolutionary Biology, University of Arizona, Tucson, AZ 85721, USApt_BR
dc.contributor.institutionELENEIDE DOFF SOTTA, CPAF-APpt_BR
dc.contributor.institutionMathew Williams, School of GeoSciences, University of Edinburgh, Edinburgh, EH8 9XP, UKpt_BR
dc.contributor.institutionPatrick Meir, School of GeoSciences, University of Edinburgh, Edinburgh, EH8 9XP, UKpt_BR
dc.contributor.institutionPaul R. Moorcroft, Department of Organismic and Evolutionary Biology, Harvard University, Cambridge, MA 02138, USA.pt_BR
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