Autor(es):
Massi, Klécia G. [UNESP] ; Bird, Michael ; Marimon, Beatriz S. ; Marimon, Ben Hur ; Nogueira, Denis S. ; Oliveira, Edmar A. ; Phillips, Oliver L. ; Quesada, Carlos A. ; Andrade, Ana S. ; Brienen, Roel J. W. ; Camargo, José L. C. ; Chave, Jerome ; Honorio Coronado, Eurídice N. ; Ferreira, Leandro V. ; Higuchi, Niro ; Laurance, Susan G. ; Laurance, William F. ; Lovejoy, Thomas ; Malhi, Yadvinder ; Martínez, Rodolfo V. ; Monteagudo, Abel ; Neill, David ; Prieto, Adriana ; Ramírez-Angulo, Hirma ; ter Steege, Hans ; Vilanova, Emilio ; Feldpausch, Ted R.
Data: 2018
Identificador Persistente: http://hdl.handle.net/11449/169979
Origem: Oasisbr
Assunto(s): Climatological water deficit; Elevation; Fire; Fruit type; Soil charcoal; Temperature; Wood density
Descrição
Made available in DSpace on 2018-12-11T16:48:34Z (GMT). No. of bitstreams: 0 Previous issue date: 2017-09-01
National Research Council of Science and Technology
Amazon forests are fire-sensitive ecosystems and consequently fires affect forest structure and composition. For instance, the legacy of past fire regimes may persist through some species and traits that are found due to past fires. In this study, we tested for relationships between functional traits that are classically presented as the main components of plant ecological strategies and environmental filters related to climate and historical fires among permanent mature forest plots across the range of local and regional environmental gradients that occur in Amazonia. We used percentage surface soil pyrogenic carbon (PyC), a recalcitrant form of carbon that can persist for millennia in soils, as a novel indicator of historical fire in old-growth forests. Five out of the nine functional traits evaluated across all 378 species were correlated with some environmental variables. Although there is more PyC in Amazonian soils than previously reported, the percentage soil PyC indicated no detectable legacy effect of past fires on contemporary functional composition. More species with dry diaspores were found in drier and hotter environments. We also found higher wood density in trees from higher temperature sites. If Amazon forest past burnings were local and without distinguishable attributes of a widespread fire regime, then impacts on biodiversity would have been small and heterogeneous. Alternatively, sufficient time may have passed since the last fire to allow for species replacement. Regardless, as we failed to detect any impact of past fire on present forest functional composition, if our plots are representative then it suggests that mature Amazon forests lack a compositional legacy of past fire.
Laboratório de Ecologia Vegetal Universidade do Estado de Mato Grosso (UNEMAT)
Instituto de Ciência e Tecnologia Universidade Estadual Paulista (Unesp)
College of Science and Engineering and Centre for Tropical Environmental and Sustainability Science (TESS) James Cook University
School of Geography University of Leeds
Biological Dynamics of Forest Fragments Project National Institute for Amazonian Research (INPA) and Smithsonian Tropical Research Institute
Laboratoire EDB Université Paul Sabatier
Instituto de Investigaciones de la Amazonía Peruana
Coordenação de Botânica Museu Paraense Emilio Goeldi
National Institute for Amazonian Research (INPA)
Department of Environmental Science and Policy George Mason University
Environmental Change Institute School of Geography and the Environment University of Oxford
Proyecto Flora del Peru Jardin Botanico de Missouri
Puyo Universidad Estatal Amazónica
Instituto de Ciencias Naturales Universidad Nacional de Colombia
Universidad de Los Andes
Naturalis Biodiversity Center
Systems Ecology Free University, De Boelelaan 1087
University of Washington
Geography College of Life and Environmental Sciences University of Exeter
Instituto de Ciência e Tecnologia Universidade Estadual Paulista (Unesp)
National Research Council of Science and Technology: PELD 403725/2012-7
National Research Council of Science and Technology: PPBio 457602/2012-0
National Research Council of Science and Technology: PVE 401279/2014-6
