Compositional response of Amazon forests to climate change

Esquivel‐Muelbert, Adriane and Baker, Timothy R. and Dexter, Kyle G. and Lewis, Simon L. and Brienen, Roel J. W. and Feldpausch, Ted R. and Lloyd, Jon and Monteagudo‐Mendoza, Abel and Arroyo, Luzmila and Álvarez-Dávila, Esteban and Higuchi, Niro and Marimon, Beatriz S. and Marimon-Junior, Ben Hur and Silveira, Marcos and Vilanova, Emilio and Gloor, Emanuel and Malhi, Yadvinder and Chave, Jerôme and Barlow, Jos and Bonal, Damien and Davila Cardozo, Nallaret and Erwin, Terry and Fauset, Sophie and Hérault, Bruno and Laurance, Susan and Poorter, Lourens and Qie, Lan and Stahl, Clement and Sullivan, Martin J. P. and ter Steege, Hans and Vos, Vincent Antoine and Zuidema, Pieter A. and Almeida, Everton and Almeida de Oliveira, Edmar and Andrade, Ana and Vieira, Simone Aparecida and Aragão, Luiz and Araujo‐Murakami, Alejandro and Arets, Eric and Aymard C, Gerardo A. and Baraloto, Christopher and Camargo, Plínio Barbosa and Barroso, Jorcely G. and Bongers, Frans and Boot, Rene and Camargo, José Luís and Castro, Wendeson and Chama Moscoso, Victor and Comiskey, James and Cornejo Valverde, Fernando and Lola da Costa, Antonio Carlos and del Aguila Pasquel, Jhon and Di Fiore, Anthony and Fernanda Duque, Luisa and Elias, Fernando and Engel, Julien and Flores Llampazo, Gerardo and Galbraith, David and Herrera Fernández, Rafael and Honorio Coronado, Eurídice and Hubau, Wannes and Jimenez‐Rojas, Eliana and Lima, Adriano José Nogueira and Umetsu, Ricardo Keichi and Laurance, William and Lopez‐Gonzalez, Gabriela and Lovejoy, Thomas and Aurelio Melo Cruz, Omar and Morandi, Paulo S. and Neill, David and Núñez Vargas, Percy and Pallqui Camacho, Nadir C. and Parada Gutierrez, Alexander and Pardo, Guido and Peacock, Julie and Peña‐Claros, Marielos and Peñuela‐Mora, Maria Cristina and Petronelli, Pascal and Pickavance, Georgia C. and Pitman, Nigel and Prieto, Adriana and Quesada, Carlos and Ramírez‐Angulo, Hirma and Réjou‐Méchain, Maxime and Restrepo Correa, Zorayda and Roopsind, Anand and Rudas, Agustín and Salomão, Rafael and Silva, Natalino and Silva Espejo, Javier and Singh, James and Stropp, Juliana and Terborgh, John and Thomas, Raquel and Toledo, Marisol and Torres‐Lezama, Armando and Valenzuela Gamarra, Luis and van de Meer, Peter J. and van der Heijden, Geertje and van der Hout, Peter and Vasquez Martinez, Rodolfo and Vela, Cesar and Vieira, Ima Célia Guimarães and Phillips, Oliver L. (2019) Compositional response of Amazon forests to climate change. Global Change Biology, 25 (1). pp. 39-56. ISSN 1354-1013

Full content URL: http://doi.org/10.1111/gcb.14413

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Compositional response of Amazon forests to climate change
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Abstract

Most of the planet's diversity is concentrated in the tropics, which includes many regions undergoing rapid climate change. Yet, while climate‐induced biodiversity changes are widely documented elsewhere, few studies have addressed this issue for lowland tropical ecosystems. Here we investigate whether the floristic and functional composition of intact lowland Amazonian forests have been changing by evaluating records from 106 long‐term inventory plots spanning 30 years. We analyse three traits that have been hypothesized to respond to different environmental drivers (increase in moisture stress and atmospheric CO2 concentrations): maximum tree size, biogeographic water‐deficit affiliation and wood density. Tree communities have become increasingly dominated by large‐statured taxa, but to date there has been no detectable change in mean wood density or water deficit affiliation at the community level, despite most forest plots having experienced an intensification of the dry season. However, among newly recruited trees, dry‐affiliated genera have become more abundant, while the mortality of wet‐affiliated genera has increased in those plots where the dry season has intensified most. Thus, a slow shift to a more dry‐affiliated Amazonia is underway, with changes in compositional dynamics (recruits and mortality) consistent with climate‐change drivers, but yet to significantly impact whole‐community composition. The Amazon observational record suggests that the increase in atmospheric CO2 is driving a shift within tree communities to large‐statured species and that climate changes to date will impact forest composition, but long generation times of tropical trees mean that biodiversity change is lagging behind climate change.

Divisions:College of Science > School of Life Sciences
ID Code:35396
Deposited On:15 Mar 2019 15:33

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