Título: | Long-term decline of the Amazon carbon sink |
Autor: | Brienen, Roel J.W. Phillips, Oliver L. Feldpausch, Ted R. Gloor, Manuel E. Baker, Timothy R. Lloyd, Jon Lopez-Gonzalez, Gabriela Monteagudo-Mendoza, Abel Malhi, Yadvinder Singh Lewis, Simon L. Vásquez-Martínez, Rodolfo Alexiades, Miguel N. Alvarez, Esteban Álvarez-Loayza, Patricia Andrade, Ana C.S. Aragao, L. E.O.C. Araujo-Murakami, Alejandro Arets, Eric J.M.M. Arroyo, Luzmila P. Aymard-C, Gerardo A. Bánki, Olaf S. Baraloto, Christopher Barroso, Jorcely Bonal, Damien Boot, René G.A. Camargo, José Luís Campana Castilho, Carolina Volkmer Moscoso, Victor Chama Chao, Kuo Jung Chave, Jérôme Comiskey, James A. Cornejo-Valverde, Fernando Costa, Lola da Oliveira, Eddie Lenza de Di Fiore, Anthony Erwin, Terry L. Fauset, Sophie Forsthofer, Mônica Galbraith, David R. Grahame, E. S. Groot, Nikée E. Hérault, Bruno Higuchi, Niro Honorio Coronado, Euridice N. Keeling, Helen C. Killeen, Timothy J. Laurance, William F. Laurance, Susan G.W. Licona, Juan Carlos Magnussen, W. E. Marimon, Beatriz Schwantes Marimon Júnior, Ben Hur Mendoza, Casimiro Neill, David A. Nogueira, Euler Melo Núñez, Percy V. Pallqui Camacho, Nadir Carolina Parada, Alexander G. Pardo-Molina, Guido Peacock, Julie Pena-Claros, Marielos Pickavance, Georgia C. Pitman, Nigel C.A. Poorter, L. Prieto, Adriana Quesada, Carlos Alberto Ramirez Arevalo, Fredy Francisco Ramírez-Angulo, Hirma Restrepo, Zorayda Roopsind, Anand Rudas, Agustín Salomão, Rafael Paiva Schwarz, Michael Silva, Natalino Silva-Espejo, Javier Eduardo Silveira, Marcos Stropp, Juliana Talbot, Joey ter Steege, H. Teran-Aguilar, J. Terborgh, John W. Thomas-Caesar, Raquel Toledo, Marisol Torello-Raventos, Mireia Umetsu, Ricardo Keichi Van Der Heijden, Geertje M.F. van der Hout, Peter Guimarães Vieira, Ima Cèlia Vieira, Simone Aparecida Vilanova, Emilio Vos, Vincent A. Zagt, Roderick J. |
Palavras-chave: | Carbon Carbon Carbon Dioxide Carbon Dioxide Carbon Flux Carbon Sink Climate Change Forest Ecosystem Net Ecosystem Exchange Numerical Model Biomass Carbon Dynamics Carbon Sink Climate Change Environmental Change Forest Dynamics Global Climate Longevity Microclimate Mortality Population Productivity Priority Journal Rainforest South America Tree Growth Analysis Atmosphere Carbon Sequestration Chemistry Growth, Development And Aging Metabolism Plant Stem Rainforest Tree Tropic Climate Wood Amazonia Atmosphere Biomass Carbon Carbon Dioxide Carbon Sequestration Plant Stems Rainforest Trees Tropical Climate Wood |
Data do documento: | 2015 |
Revista: | Nature |
É parte de: | Volume 519, Número 7543, Pags. 344-348 |
Abstract: | Atmospheric carbon dioxide records indicate that the land surface has acted as a strong global carbon sink over recent decades, with a substantial fraction of this sink probably located in the tropics, particularly in the Amazon. Nevertheless, it is unclear how the terrestrial carbon sink will evolve as climate and atmospheric composition continue to change. Here we analyse the historical evolution of the biomass dynamics of the Amazon rainforest over three decades using a distributed network of 321 plots. While this analysis confirms that Amazon forests have acted as a long-term net biomass sink, we find a long-term decreasing trend of carbon accumulation. Rates of net increase in above-ground biomass declined by one-third during the past decade compared to the 1990s. This is a consequence of growth rate increases levelling off recently, while biomass mortality persistently increased throughout, leading to a shortening of carbon residence times. Potential drivers for the mortality increase include greater climate variability, and feedbacks of faster growth on mortality, resulting in shortened tree longevity. The observed decline of the Amazon sink diverges markedly from the recent increase in terrestrial carbon uptake at the global scale, and is contrary to expectations based on models. © 2015 2015 Macmillan Publishers Limited. |
DOI: | 10.1038/nature14283 |
Aparece nas coleções: | Artigos
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