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Marca-Zevallos, MJ, Moulatlet, GM, Sousa, TR et al. (115 more authors) (2022) Local hydrological conditions influence tree diversity and composition across the Amazon basin. Ecography, 2022 (11). e06125. ISSN 0906-7590
Abstract
Tree diversity and composition in Amazonia are known to be strongly determined by the water supplied by precipitation. Nevertheless, within the same climatic regime, water availability is modulated by local topography and soil characteristics (hereafter referred to as local hydrological conditions), varying from saturated and poorly drained to well-drained and potentially dry areas. While these conditions may be expected to influence species distribution, the impacts of local hydrological conditions on tree diversity and composition remain poorly understood at the whole Amazon basin scale. Using a dataset of 443 1-ha non-flooded forest plots distributed across the basin, we investigate how local hydrological conditions influence 1) tree alpha diversity, 2) the community-weighted wood density mean (CWM-wd) – a proxy for hydraulic resistance and 3) tree species composition. We find that the effect of local hydrological conditions on tree diversity depends on climate, being more evident in wetter forests, where diversity increases towards locations with well-drained soils. CWM-wd increased towards better drained soils in Southern and Western Amazonia. Tree species composition changed along local soil hydrological gradients in Central-Eastern, Western and Southern Amazonia, and those changes were correlated with changes in the mean wood density of plots. Our results suggest that local hydrological gradients filter species, influencing the diversity and composition of Amazonian forests. Overall, this study shows that the effect of local hydrological conditions is pervasive, extending over wide Amazonian regions, and reinforces the importance of accounting for local topography and hydrology to better understand the likely response and resilience of forests to increased frequency of extreme climate events and rising temperatures.
Metadata
Item Type: | Article |
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Authors/Creators: |
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Copyright, Publisher and Additional Information: | © 2022 The Authors. Ecography published by John Wiley & Sons Ltd on behalf of Nordic Society Oikos. 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. |
Keywords: | Amazon basin; HAND; species composition; tree diversity; wood density |
Dates: |
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Institution: | The University of Leeds |
Academic Units: | The University of Leeds > Faculty of Environment (Leeds) > School of Geography (Leeds) > Ecology & Global Change (Leeds) |
Funding Information: | Funder Grant number NERC (Natural Environment Research Council) NER/A/S/2003/00609 Leverhulme Trust RF/2/RFG/2004/0457 NERC (Natural Environment Research Council) NE/B503384/1 NERC (Natural Environment Research Council) NE/D005590/1 Gordon & Betty Moore Foundation N/A NERC (Natural Environment Research Council) NE/F005806/1 EU - European Union 291585 (ERC 2011 ADG) NERC (Natural Environment Research Council) NE/K01644X/1 RCUK (Research Councils UK) NE/M022021/1 NERC (Natural Environment Research Council) NE/N004655/1 NERC (Natural Environment Research Council) NE/N012542/1 RCUK (Research Councils UK) NE/M022021/1 EU - European Union 758873 |
Depositing User: | Symplectic Publications |
Date Deposited: | 04 Apr 2023 12:58 |
Last Modified: | 25 Jun 2023 23:12 |
Status: | Published |
Publisher: | Wiley Open Access |
Identification Number: | 10.1111/ecog.06125 |
Related URLs: | |
Open Archives Initiative ID (OAI ID): | oai:eprints.whiterose.ac.uk:194673 |
Available Versions of this Item
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Local hydrological conditions influence tree diversity and composition across the Amazon basin. (deposited 07 Oct 2022 12:38)
- Local hydrological conditions influence tree diversity and composition across the Amazon basin. (deposited 04 Apr 2023 12:58) [Currently Displayed]