Luize, Bruno Garcia, Tuomisto, Hanna, Ekelschot, Robin, Dexter, Kyle G., Amaral, Iêda L. do, Coelho, Luiz de Souza, Matos, Francisca Dionízia de Almeida, Lima Filho, Diógenes de Andrade, Salomão, Rafael P., Wittmann, Florian, and others. (2024) The biogeography of the Amazonian tree flora. Communications Biology, 7 (1). Article Number 1240. ISSN 2399-3642. (doi:10.1038/s42003-024-06937-5) (KAR id:107422)
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| Official URL: https://doi.org/10.1038/s42003-024-06937-5 |
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Abstract
We describe the geographical variation in tree species composition across Amazonian forests and show how environmental conditions are associated with species turnover. Our analyses are based on 2023 forest inventory plots (1 ha) that provide abundance data for a total of 5188 tree species. Within-plot species composition reflected both local environmental conditions (especially soil nutrients and hydrology) and geographical regions. A broader-scale view of species turnover was obtained by interpolating the relative tree species abundances over Amazonia into 47,441 0.1-degree grid cells. Two main dimensions of spatial change in tree species composition were identified. The first was a gradient between western Amazonia at the Andean forelands (with young geology and relatively nutrient-rich soils) and central–eastern Amazonia associated with the Guiana and Brazilian Shields (with more ancient geology and poor soils). The second gradient was between the wet forests of the northwest and the drier forests in southern Amazonia. Isolines linking cells of similar composition crossed major Amazonian rivers, suggesting that tree species distributions are not limited by rivers. Even though some areas of relatively sharp species turnover were identified, mostly the tree species composition changed gradually over large extents, which does not support delimiting clear discrete biogeographic regions within Amazonia.
| Item Type: | Article |
|---|---|
| DOI/Identification number: | 10.1038/s42003-024-06937-5 |
| Subjects: |
G Geography. Anthropology. Recreation G Geography. Anthropology. Recreation > GE Environmental Sciences |
| Institutional Unit: | Schools > School of Natural Sciences > Conservation |
| Former Institutional Unit: |
Divisions > Division of Human and Social Sciences > School of Anthropology and Conservation
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| Funders: |
National Council for Scientific and Technological Development (https://ror.org/03swz6y49)
Agence Nationale de la Recherche (https://ror.org/00rbzpz17) |
| SWORD Depositor: | JISC Publications Router |
| Depositing User: | JISC Publications Router |
| Date Deposited: | 30 Oct 2024 15:10 UTC |
| Last Modified: | 20 May 2025 12:31 UTC |
| Resource URI: | https://kar.kent.ac.uk/id/eprint/107422 (The current URI for this page, for reference purposes) |
University of Kent Author Information
Alexiades, Miguel N.
| Creator's ORCID: |
 https://orcid.org/0000-0001-5674-5341
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