Biogeographic distributions of neotropical trees reflect their directly measured drought tolerances

Abstract High levels of species diversity hamper current understanding of how tropical forests may respond to environmental change. In the tropics, water availability is a leading driver of the diversity and distribution of tree species, suggesting that many tropical taxa may be physiologically inca...

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Autores principales:	Adriane Esquivel-Muelbert, David Galbraith, Kyle G. Dexter, Timothy R. Baker, Simon L. Lewis, Patrick Meir, Lucy Rowland, Antonio Carlos Lola da Costa, Daniel Nepstad, Oliver L. Phillips
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2017
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/0d78a91e06614203828a49364bda6975
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spelling	oai:doaj.org-article:0d78a91e06614203828a49364bda69752021-12-02T12:32:46ZBiogeographic distributions of neotropical trees reflect their directly measured drought tolerances10.1038/s41598-017-08105-82045-2322https://doaj.org/article/0d78a91e06614203828a49364bda69752017-08-01T00:00:00Zhttps://doi.org/10.1038/s41598-017-08105-8https://doaj.org/toc/2045-2322Abstract High levels of species diversity hamper current understanding of how tropical forests may respond to environmental change. In the tropics, water availability is a leading driver of the diversity and distribution of tree species, suggesting that many tropical taxa may be physiologically incapable of tolerating dry conditions, and that their distributions along moisture gradients can be used to predict their drought tolerance. While this hypothesis has been explored at local and regional scales, large continental-scale tests are lacking. We investigate whether the relationship between drought-induced mortality and distributions holds continentally by relating experimental and observational data of drought-induced mortality across the Neotropics to the large-scale bioclimatic distributions of 115 tree genera. Across the different experiments, genera affiliated to wetter climatic regimes show higher drought-induced mortality than dry-affiliated ones, even after controlling for phylogenetic relationships. This pattern is stronger for adult trees than for saplings or seedlings, suggesting that the environmental filters exerted by drought impact adult tree survival most strongly. Overall, our analysis of experimental, observational, and bioclimatic data across neotropical forests suggests that increasing moisture-stress is indeed likely to drive significant changes in floristic composition.Adriane Esquivel-MuelbertDavid GalbraithKyle G. DexterTimothy R. BakerSimon L. LewisPatrick MeirLucy RowlandAntonio Carlos Lola da CostaDaniel NepstadOliver L. PhillipsNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 7, Iss 1, Pp 1-11 (2017)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Adriane Esquivel-Muelbert David Galbraith Kyle G. Dexter Timothy R. Baker Simon L. Lewis Patrick Meir Lucy Rowland Antonio Carlos Lola da Costa Daniel Nepstad Oliver L. Phillips Biogeographic distributions of neotropical trees reflect their directly measured drought tolerances
description	Abstract High levels of species diversity hamper current understanding of how tropical forests may respond to environmental change. In the tropics, water availability is a leading driver of the diversity and distribution of tree species, suggesting that many tropical taxa may be physiologically incapable of tolerating dry conditions, and that their distributions along moisture gradients can be used to predict their drought tolerance. While this hypothesis has been explored at local and regional scales, large continental-scale tests are lacking. We investigate whether the relationship between drought-induced mortality and distributions holds continentally by relating experimental and observational data of drought-induced mortality across the Neotropics to the large-scale bioclimatic distributions of 115 tree genera. Across the different experiments, genera affiliated to wetter climatic regimes show higher drought-induced mortality than dry-affiliated ones, even after controlling for phylogenetic relationships. This pattern is stronger for adult trees than for saplings or seedlings, suggesting that the environmental filters exerted by drought impact adult tree survival most strongly. Overall, our analysis of experimental, observational, and bioclimatic data across neotropical forests suggests that increasing moisture-stress is indeed likely to drive significant changes in floristic composition.
format	article
author	Adriane Esquivel-Muelbert David Galbraith Kyle G. Dexter Timothy R. Baker Simon L. Lewis Patrick Meir Lucy Rowland Antonio Carlos Lola da Costa Daniel Nepstad Oliver L. Phillips
author_facet	Adriane Esquivel-Muelbert David Galbraith Kyle G. Dexter Timothy R. Baker Simon L. Lewis Patrick Meir Lucy Rowland Antonio Carlos Lola da Costa Daniel Nepstad Oliver L. Phillips
author_sort	Adriane Esquivel-Muelbert
title	Biogeographic distributions of neotropical trees reflect their directly measured drought tolerances
title_short	Biogeographic distributions of neotropical trees reflect their directly measured drought tolerances
title_full	Biogeographic distributions of neotropical trees reflect their directly measured drought tolerances
title_fullStr	Biogeographic distributions of neotropical trees reflect their directly measured drought tolerances
title_full_unstemmed	Biogeographic distributions of neotropical trees reflect their directly measured drought tolerances
title_sort	biogeographic distributions of neotropical trees reflect their directly measured drought tolerances
publisher	Nature Portfolio
publishDate	2017
url	https://doaj.org/article/0d78a91e06614203828a49364bda6975
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Biogeographic distributions of neotropical trees reflect their directly measured drought tolerances

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