Portal de Periódicos da CAPES

Artigo Acesso aberto Produção Nacional Revisado por pares

BIBTEX RIS

Water table depth modulates productivity and biomass across Amazonian forests

2022; Wiley; Volume: 31; Issue: 8 Linguagem: Inglês

10.1111/geb.13531

1466-8238

Thaiane R. Sousa, Juliana Schietti, Igor Oliveira Ribeiro, Thaíse Emilio, Rafael Herrera Fernández, Hans ter Steege, Carolina V. Castilho, Adriane Esquivel‐Muelbert, Timothy R. Baker, Aline Pontes Lopes, Camila V. J. Silva, Juliana M. Silveira, Géraldine Derroire, Wendeson Castro, Abel Monteagudo Mendoza, Ademir Roberto Ruschel, Adriana Prieto, Adriano José Nogueira Lima, Agustín Rudas, Alejandro Araujo‐Murakami, Alexander Parada Gutierrez, Ana Andrade, Anand Roopsind, Ângelo Gilberto Manzatto, Anthony Di Fiore, Armando Torres‐Lezama, Aurélie Dourdain, Beatriz Schwantes Marimon, Ben Hur Marimon, Benoît Burban, Bert van Ulft, Bruno Hérault, Carlos A. Quesada, Casimiro Mendoza, Clément Stahl, Damien Bonal, David Galbraith, David Neill, Edmar Almeida de Oliveira, Eduardo Hase, E. Jiménez, Emilio Vilanova, E.J.M.M. Arets, Érika Berenguer, Esteban Álvarez‐Dávila, Eurídice N. Honorio Coronado, Everton Almeida, Fernanda Coelho, Fernando Cornejo Valverde, Fernando Elias, Foster Brown, Frans Bongers, Freddy Ramírez Arévalo, Gabriela López‐González, Geertje van der Heijden, Gerardo A. Aymard C., Gerardo Flores Llampazo, Guido Pardo, Hirma Ramírez‐Angulo, Iêda Leão do Amaral, Ima Célia Guimarães Vieira, Isau Huamantupa‐Chuquimaco, James A. Comiskey, James Singh, Javier Silva Espejo, Jhon del Águila Pasquel, Joeri A. Zwerts, Joey Talbot, John Terborgh, Joice Ferreira, Jorcely Barroso, Jos Barlow, José Luís Camargo, Juliana Stropp, Julie Peacock, Julio Serrano, Karina Melgaço, Leandro Valle Ferreira, Lilian Blanc, Lourens Poorter, Luis Valenzuela Gamarra, Luiz E. O. C. Aragão, Luzmila Arroyo, Marcos Silveira, María Cristina Peñuela Mora, Mario Percy Núñez Vargas, Marisol Toledo, Mathias Disney, Maxime Réjou‐Méchain, Michel Baisie, Michelle Kalamandeen, Nadir Pallqui Camacho, Nállarett Dávila Cardozo, Natalino Silva, Nigel C. A. Pitman, Níro Higuchi, Olaf Bánki, Patricia Álvarez-Loayza, Paulo Maurı́cio Lima de Alencastro Graça, Paulo S. Morandi, P.J. van der Meer, Peter van der Hout, Pétrus Naisso, Plínio Barbosa de Camargo, Rafael P. Salomão, Raquel Thomas, René Boot, Ricardo Keichi Umetsu, Richarlly da Costa Silva, Robyn J. Burnham, Roderick Zagt, Rodolfo Vásquez, Roel Brienen, Sabina Cerruto Ribeiro, Simon L. Lewis, Simone Aparecida Vieira, Simone Matias Reis, Sophie Fauset, Susan G. W. Laurance, Ted R. Feldpausch, Terry L. Erwin, Timothy J. Killeen, Verginia Wortel, Víctor Chama Moscoso, Vincent Antoine Vos, Walter Huaraca Huasco, William F. Laurance, Yadvinder Malhi, William E. Magnusson, Oliver L. Phillips, Flávia R. C. Costa,

Tree-ring climate responses

Abstract Aim Water availability is the major driver of tropical forest structure and dynamics. Most research has focused on the impacts of climatic water availability, whereas remarkably little is known about the influence of water table depth and excess soil water on forest processes. Nevertheless, given that plants take up water from the soil, the impacts of climatic water supply on plants are likely to be modulated by soil water conditions. Location Lowland Amazonian forests. Time period 1971–2019. Methods We used 344 long‐term inventory plots distributed across Amazonia to analyse the effects of long‐term climatic and edaphic water supply on forest functioning. We modelled forest structure and dynamics as a function of climatic, soil‐water and edaphic properties. Results Water supplied by both precipitation and groundwater affects forest structure and dynamics, but in different ways. Forests with a shallow water table (depth <5 m) had 18% less above‐ground woody productivity and 23% less biomass stock than forests with a deep water table. Forests in drier climates (maximum cumulative water deficit < −160 mm) had 21% less productivity and 24% less biomass than those in wetter climates. Productivity was affected by the interaction between climatic water deficit and water table depth. On average, in drier climates the forests with a shallow water table had lower productivity than those with a deep water table, with this difference decreasing within wet climates, where lower productivity was confined to a very shallow water table. Main conclusions We show that the two extremes of water availability (excess and deficit) both reduce productivity in Amazon upland ( terra‐firme ) forests. Biomass and productivity across Amazonia respond not simply to regional climate, but rather to its interaction with water table conditions, exhibiting high local differentiation. Our study disentangles the relative contribution of those factors, helping to improve understanding of the functioning of tropical ecosystems and how they are likely to respond to climate change.