Biome Specialisation in Squirrels: Phylogenetic and Geographic Patterns
[Aim] Habitat breadth shapes species' responses to environmental change and influences large-scale biodiversity patterns. According to Vrba's resource-use hypothesis, biome specialists (inhabiting a single biome) exhibit higher speciation rates than generalists due to increased population...
| Autores: | , , , , , , , , , |
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| Tipo de recurso: | artículo |
| Estado: | Versión publicada |
| Fecha de publicación: | 2026 |
| País: | España |
| Institución: | Consejo Superior de Investigaciones Científicas (CSIC) |
| Repositorio: | DIGITAL.CSIC. Repositorio Institucional del CSIC |
| OAI Identifier: | oai:digital.csic.es:10261/423357 |
| Acceso en línea: | http://hdl.handle.net/10261/423357 https://api.elsevier.com/content/abstract/scopus_id/105029106874 |
| Access Level: | acceso abierto |
| Palabra clave: | Biome specialisation Diversity patterns Recent speciation rates Resource-use hypothesis Sciuridae Squirrels |
| Sumario: | [Aim] Habitat breadth shapes species' responses to environmental change and influences large-scale biodiversity patterns. According to Vrba's resource-use hypothesis, biome specialists (inhabiting a single biome) exhibit higher speciation rates than generalists due to increased population isolation during habitat fragmentation, generally associated with past climate changes, particularly in biomes at extremes of the global climatic gradient. However, the phylogenetic and geographic distribution of biome specialists remains poorly understood. Here, we use squirrels to assess whether: (1) clades accumulate more specialist species than expected by chance, (2) this accumulation is associated with biomes at the extremes of the climatic gradient (tropical rainforest, subtropical desert, steppe and tundra), (3) habitat specialisation relates to geographic patterns of phylogenetic diversity and (4) species-level recent speciation rates. |
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