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https://repositorio.inpa.gov.br/handle/1/38362
Título: | Neutral processes and reduced dispersal across Amazonian rivers may explain how rivers maintain species diversity after secondary contact |
Autor: | Santorelli Junior, Sergio Magnusson, William Ernest Deus, Cláudia Pereira de Keitt, Timothy H. |
Palavras-chave: | Thamnophilidae Furnariidae Tyrannidae |
Data do documento: | 2022 |
Revista: | Perspectives in Ecology and Conservation |
Abstract: | Amazonian rivers are only partial barriers to the dispersal of most species, but they still form the limits between the distributions of many similar species. We show that two competitively-identical species may remain allopatric for hundreds of generations when a river only reduces the chance of a species crossing it. To illustrate this, we developed a two-dimensional cellular automata for two allopatric species under neutral-theory dynamics and recorded the time required for the first extinction of a species and the frequency with which it occurred across replicate simulations. Our results indicate that neutral processes associated with reduced dispersal across rivers can maintain competitively-identical species allopatric for hundreds of generations despite repeated river crossings. These cross-river incursions were rarely successful owing to the low likelihood of a rare invader outcompeting resident populations. This process provides a plausible mechanism for the maintenance of Amazonian biodiversity and may explain the spatial-distribution limits of species caused by large rivers in the Amazon that are not absolute barriers to dispersal. |
ISSN: | 25300644 |
DOI: | 10.1016/j.pecon.2021.12.004 |
Aparece nas coleções: | Artigos |
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