Compositional response of Amazon forests to climate change

Esquivel‐Muelbert, Adriane, Baker, Timothy R., Dexter, Kyle G., Lewis, Simon L., Brienen, Roel J.W., Feldpausch, Ted R., Lloyd, Jon, Monteagudo‐Mendoza, Abel, Arroyo, Luzmila, Álvarez‐Dávila, Esteban, Higuchi, Niro, Marimon, Beatriz S., Marimon-Junior, Ben, Silveira, Marcos, Vilanova, Emilio, Gloor, Emanuel, Malhi, Yadvinder, Chave, Jerôme, Barlow, Jos, Bonal, Damien, Cardozo, Nallaret Davila, Erwin, Terry, Fauset, Sophie, Hérault, Bruno, Laurance, Susan, Poorter, Lourens, Qie, Lan, Stahl, Clement, Sullivan, Martin J.P., Ter Steege, Hans, Vos, Vincent Antoine, Zuidema, Pieter A., Almeida, Everton, De Oliveira, Edmar, Andrade, Ana, Vieira, Simone Aparecida, Aragão, Luiz, Araujo‐Murakami, Alejandro, Arets, Eric, Aymard C., Gerardo A., Camargo, Plínio Barbosa, Barroso, Jorcely G., Bongers, Frans, Boot, Rene, Camargo, José Luis, Castro, Wendeson, Moscoso, Victor Chama, Comiskey, James, Valverde, Fernando Cornejo, Lola Da Costa, Antonio Carlos, Pasquel, Jhon del Aguila, Di Fiore, Tony, Duque, Luisa Fernanda, Elias, Fernando, Engel, Julien, Llampazo, Gerardo Flores, Galbraith, David, Fernández, Rafael Herrera, Honorio Coronado, Euridice, Hubau, Wannes, Jiménez-Rojas, Eliana, Lima, Adriano José Nogueira, Umetsu, Ricardo Keichi, Laurance, William, López-González, Gabriela, Lovejoy, Thomas, Cruz, Omar Aurelio Melo, Morandi, Paulo S., Neill, David, Núñez Vargas, Percy, Pallqui, Nadir C., Gutierrez, Alexander Parada, Pardo, Guido, Peacock, Julie, Peña‐Claros, Marielos, Peñuela-Mora, Maria, Petronelli, Pascal, Pickavance, Georgia C., Pitman, Nigel, Prieto, Adriana, Quesada, Carlos, Ramírez-Angulo, Hirma, Réjou‐Méchain, Maxime, Correa, Zorayda Restrepo, Roopsind, Anand, Rudas, Agustín, Salamão, Rafael, Silva, Natalino, Silva, Javier Espejo, Singh, James, Stropp, Juliana, Terborgh, John, Thomas, Raquel, Toledo, Marisol, Torres-Lezama, Armando, Gamarra, Luis Valenzuela, van de Meer, Peter J., van der Heijden, Geertje, van der Hout, Peter, Vásquez Martinez, Rodolfo, Vela, César, Vieira, Ima Célia Guimarães, and Phillips, Oliver (2018) Compositional response of Amazon forests to climate change. Global Change Biology. (In Press)

[img]
Preview
PDF - Published Version
Download (1MB) | Preview
View at Publisher Website: https://doi.org/10.1111/gcb.14413
 
12
65


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.

Item ID: 56099
Item Type: Article (Research - C1)
ISSN: 1365-2486
Keywords: bioclimatic niches, climate change, compositional shifts, functional traits, temporal trends, tropical forests
Copyright Information: Copyright © 2018 The Authors. This is an open access article under the terms of the Creative Commons Attribution License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited.
Funders: Natural Environment Research Council (NERC), Gordon and Betty Moore Foundation (GBMF), European Research Council (ERC), European Union's Seventh Framework Programme (EUSFP), Royal Society (RS)
Projects and Grants: NERC AMAZONICA NE/F005806/1, NERC TROBIT NE/D005590/1, NERC BIO‐RED NE/N012542/1, NERC TREMOR NE/N004655/1, NERC grant T‐FORCES, EUSFP Grant Number: 282664, RS Grant Number: CH160091, Royal Society Wolfson Research Merit Award
Date Deposited: 22 Nov 2018 02:18
FoR Codes: 05 ENVIRONMENTAL SCIENCES > 0502 Environmental Science and Management > 050202 Conservation and Biodiversity @ 100%
SEO Codes: 96 ENVIRONMENT > 9608 Flora, Fauna and Biodiversity > 960899 Flora, Fauna and Biodiversity of Environments not elsewhere classified @ 100%
Downloads: Total: 65
Last 12 Months: 25
More Statistics

Actions (Repository Staff Only)

Item Control Page Item Control Page