Species-fragmented area relationship
The species-area relationship (SAR) gives a quantitative description of the increasing number of species in a community with increasing area of habitat. In conservation, SARs have been used to predict the number of extinctions when the area of habitat is reduced. Such predictions are most needed for...
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| Acceso en línea: | http://hdl.handle.net/20.500.12110/paper_00278424_v110_n31_p12715_Hanski |
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todo:paper_00278424_v110_n31_p12715_Hanski2023-10-03T14:38:09Z Species-fragmented area relationship Hanski, I. Zurita, G.A. Bellocq, M.I. Rybicki, J. Atlantic forest Extinction threshold Habitat conversion Metapopulation capacity Nagoya biodiversity agreement article bird habitat habitat fragmentation metapopulation nonhuman priority journal simulation species species area relationship biological model ecosystem tree tropic climate Ecosystem Models, Biological Trees Tropical Climate The species-area relationship (SAR) gives a quantitative description of the increasing number of species in a community with increasing area of habitat. In conservation, SARs have been used to predict the number of extinctions when the area of habitat is reduced. Such predictions are most needed for landscapes rather than for individual habitat fragments, but SAR-based predictions of extinctions for landscapes with highly fragmented habitat are likely to be biased because SAR assumes contiguous habitat. In reality, habitat loss is typically accompanied by habitat fragmentation. To quantify the effect of fragmentation in addition to the effect of habitat loss on the number of species, we extend the power-law SAR to the species-fragmented area relationship. This model unites the single-species metapopulation theory with the multispecies SAR for communities. We demonstrate with a realistic simulation model and with empirical data for forest-inhabiting subtropical birds that the species-fragmented area relationship gives a far superior prediction than SAR of the number of species in fragmented landscapes. The results demonstrate that for communities of species that are not well adapted to live in fragmented landscapes, the conventional SAR underestimates the number of extinctions for landscapes in which little habitat remains and it is highly fragmented. © PNAS 2013. JOUR info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by/2.5/ar http://hdl.handle.net/20.500.12110/paper_00278424_v110_n31_p12715_Hanski |
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Universidad de Buenos Aires |
| institution_str |
I-28 |
| repository_str |
R-134 |
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Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) |
| topic |
Atlantic forest Extinction threshold Habitat conversion Metapopulation capacity Nagoya biodiversity agreement article bird habitat habitat fragmentation metapopulation nonhuman priority journal simulation species species area relationship biological model ecosystem tree tropic climate Ecosystem Models, Biological Trees Tropical Climate |
| spellingShingle |
Atlantic forest Extinction threshold Habitat conversion Metapopulation capacity Nagoya biodiversity agreement article bird habitat habitat fragmentation metapopulation nonhuman priority journal simulation species species area relationship biological model ecosystem tree tropic climate Ecosystem Models, Biological Trees Tropical Climate Hanski, I. Zurita, G.A. Bellocq, M.I. Rybicki, J. Species-fragmented area relationship |
| topic_facet |
Atlantic forest Extinction threshold Habitat conversion Metapopulation capacity Nagoya biodiversity agreement article bird habitat habitat fragmentation metapopulation nonhuman priority journal simulation species species area relationship biological model ecosystem tree tropic climate Ecosystem Models, Biological Trees Tropical Climate |
| description |
The species-area relationship (SAR) gives a quantitative description of the increasing number of species in a community with increasing area of habitat. In conservation, SARs have been used to predict the number of extinctions when the area of habitat is reduced. Such predictions are most needed for landscapes rather than for individual habitat fragments, but SAR-based predictions of extinctions for landscapes with highly fragmented habitat are likely to be biased because SAR assumes contiguous habitat. In reality, habitat loss is typically accompanied by habitat fragmentation. To quantify the effect of fragmentation in addition to the effect of habitat loss on the number of species, we extend the power-law SAR to the species-fragmented area relationship. This model unites the single-species metapopulation theory with the multispecies SAR for communities. We demonstrate with a realistic simulation model and with empirical data for forest-inhabiting subtropical birds that the species-fragmented area relationship gives a far superior prediction than SAR of the number of species in fragmented landscapes. The results demonstrate that for communities of species that are not well adapted to live in fragmented landscapes, the conventional SAR underestimates the number of extinctions for landscapes in which little habitat remains and it is highly fragmented. © PNAS 2013. |
| format |
JOUR |
| author |
Hanski, I. Zurita, G.A. Bellocq, M.I. Rybicki, J. |
| author_facet |
Hanski, I. Zurita, G.A. Bellocq, M.I. Rybicki, J. |
| author_sort |
Hanski, I. |
| title |
Species-fragmented area relationship |
| title_short |
Species-fragmented area relationship |
| title_full |
Species-fragmented area relationship |
| title_fullStr |
Species-fragmented area relationship |
| title_full_unstemmed |
Species-fragmented area relationship |
| title_sort |
species-fragmented area relationship |
| url |
http://hdl.handle.net/20.500.12110/paper_00278424_v110_n31_p12715_Hanski |
| work_keys_str_mv |
AT hanskii speciesfragmentedarearelationship AT zuritaga speciesfragmentedarearelationship AT bellocqmi speciesfragmentedarearelationship AT rybickij speciesfragmentedarearelationship |
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1782027660453478400 |