Support for the habitat amount hypothesis from a global synthesis of species density studies
| Autor: | Inara R. Leal, Víctor Arroyo-Rodríguez, Marion Pfeifer, Laura M. Cisneros, Thibault Lachat, Danilo Bandini Ribeiro, Rebecca Fang, Luc Lens, Cristina Banks-Leite, Dinarzarde C. Raheem, Lenore Fahrig, James I. Watling, J. Nicolás Urbina-Cardona, Lander Baeten, A. Caroli Hamel‐Leigue, Hugh P. Possingham, Eric M. Wood, Eleanor M. Slade |
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| Přispěvatelé: | Asian School of the Environment |
| Rok vydání: | 2020 |
| Předmět: |
0106 biological sciences
Habitat fragmentation Ecology Insular biogeography 010604 marine biology & hydrobiology fungi Fragmentation (computing) Biodiversity Biology 010603 evolutionary biology 01 natural sciences Forest Loss Patch Size Habitat destruction Biological sciences::Ecology [Science] Habitat Species richness Taxonomic rank Ecosystem Ecology Evolution Behavior and Systematics |
| Zdroj: | Ecology Letters. 23:674-681 |
| ISSN: | 1461-0248 1461-023X |
| Popis: | Decades of research suggest that species richness depends on spatial characteristics of habitat patches, especially their size and isolation. In contrast, the habitat amount hypothesis predicts that (1) species richness in plots of fixed size (species density) is more strongly and positively related to the amount of habitat around the plot than to patch size or isolation; (2) habitat amount better predicts species density than patch size and isolation combined, (3) there is no effect of habitat fragmentation per se on species density and (4) patch size and isolation effects do not become stronger with declining habitat amount. Data on eight taxonomic groups from 35 studies around the world support these predictions. Conserving species density requires minimising habitat loss, irrespective of the configuration of the patches in which that habitat is contained. |
| Databáze: | OpenAIRE |
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