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https://hdl.handle.net/20.500.12921/340
Título : | Seasonal drought limits tree species across the Neotropics |
Autor : | Esquivel-Muelbert, Adriane Baker, Timothy R. Dexter, Kyle Lewis, Simon L. Steege, Hans ter López González, Gabriela Monteagudo Mendoza, Abel Brienen, Roel J. W. Feldpausch, Ted R. Pitman, Nigel Alonso, Alfonso Heijden, Geertje van der Peña-Claros, Marielos Ahuite, Manuel Alexiaides, Miguel Álvarez Dávila, Esteban Murakami, Alejandro Araujo Arroyo, Luzmila Aulestia, Milton Balslev, Henrik Barroso, Jorcely Boot, Rene Cano, Angela Chama Moscoso, Victor Comiskey, James A. Cornejo, Fernando Dallmeier, Francisco Daly, Douglas C. Dávila Cardozo, Nállarett Duivenvoorden, Joost F. Duque Montoya, Alvaro Javier Erwin, Terry Di Fiore, Anthony Fredericksen, Todd Fuentes, Alfredo García Villacorta, Roosevelt Gonzales, Therany Guevara Andino, Juan Ernesto Honorio Coronado, Eurídice Huamantupa Chuquimaco, Isau Killeen Timothy J., Yadvinder Malhi Mendoza Casimiro, Hugo Mogollón Jørgensen, Peter Møller Montero, Juan Carlos Mostacedo, Bonifacio Nauray, William Neill, David Núñez Vargas, Percy Palacios, Sonia Palacios Cuenca, Walter Pallqui Camacho, Nadir Carolina Peacock, Julie Phillips, Juan Fernando Pickavance, Georgia Quesada, Carlos Alberto Ramírez-Angulo, Hirma Restrepo, Zorayda Reynel Rodríguez, Carlos Ríos Paredes, Marcos Sierra, Rodrigo Silveira, Marcos Stevenson, Pablo Stropp, Juliana Terborgh, John Tirado, Miltón Toledo, Marisol Torres-Lezama, Armando Umaña, María Natalia Urrego, Ligia Estela Vásquez Martínez, Rodolfo Valenzuela Gamarra, Luis Vela, César I. A. Vilanova Torre, Emilio Vos, Vincent Hildebrand, Patricio von Vriesendorp, Corine Wang, Ophelia Young, Kenneth R. Zartman, Charles Eugene Phillips, Oliver L. Peñuela-Mora, Maria Cristina |
Palabras clave : | Variedades Precipitación atmosférica Variación genética Biodiversidad forestal Comunidades vegetales Estrés de sequía Cubierta de copas Composición botánica Flora Bosque tropical Clases de árboles Estación seca Amazonía |
Fecha de publicación : | abr-2016 |
Editorial : | Wiley |
Citación : | Ecography; 40(5): 618-629 |
Resumen : | Within the tropics, the species richness of tree communities is strongly and positively associated with precipitation. Previous research has suggested that this macroecological pattern is driven by the negative effect of water‐stress on the physiological processes of most tree species. This implies that the range limits of taxa are defined by their ability to occur under dry conditions, and thus in terms of species distributions predicts a nested pattern of taxa distribution from wet to dry areas. However, this ‘dry‐tolerance’ hypothesis has yet to be adequately tested at large spatial and taxonomic scales. Here, using a dataset of 531 inventory plots of closed canopy forest distributed across the western Neotropics we investigated how precipitation, evaluated both as mean annual precipitation and as the maximum climatological water deficit, influences the distribution of tropical tree species, genera and families. We find that the distributions of tree taxa are indeed nested along precipitation gradients in the western Neotropics. Taxa tolerant to seasonal drought are disproportionately widespread across the precipitation gradient, with most reaching even the wettest climates sampled; however, most taxa analysed are restricted to wet areas. Our results suggest that the ‘dry tolerance' hypothesis has broad applicability in the world's most species‐rich forests. In addition, the large number of species restricted to wetter conditions strongly indicates that an increased frequency of drought could severely threaten biodiversity in this region. Overall, this study establishes a baseline for exploring how tropical forest tree composition may change in response to current and future environmental changes in this region. |
URI : | https://hdl.handle.net/20.500.12921/340 https://doi.org/10.1111/ecog.01904 |
ISSN : | 9067590 |
Aparece en las colecciones: | Artículos en revistas indexadas |
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