Equilibrium of global amphibian species distributions with climate.
A common assumption in bioclimatic envelope modeling is that species distributions are in equilibrium with contemporary climate. A number of studies have measured departures from equilibrium in species distributions in particular regions, but such investigations were never carried out for a complete...
| Main Authors: | , , , , |
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| Format: | Article |
| Language: | English |
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Public Library of Science (PLoS)
2012-01-01
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| Series: | PLoS ONE |
| Online Access: | http://europepmc.org/articles/PMC3325238?pdf=render |
| _version_ | 1828874876654452736 |
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| author | Mariana Munguía Carsten Rahbek Thiago F Rangel Jose Alexandre F Diniz-Filho Miguel B Araújo |
| author_facet | Mariana Munguía Carsten Rahbek Thiago F Rangel Jose Alexandre F Diniz-Filho Miguel B Araújo |
| author_sort | Mariana Munguía |
| collection | DOAJ |
| description | A common assumption in bioclimatic envelope modeling is that species distributions are in equilibrium with contemporary climate. A number of studies have measured departures from equilibrium in species distributions in particular regions, but such investigations were never carried out for a complete lineage across its entire distribution. We measure departures of equilibrium with contemporary climate for the distributions of the world amphibian species. Specifically, we fitted bioclimatic envelopes for 5544 species using three presence-only models. We then measured the proportion of the modeled envelope that is currently occupied by the species, as a metric of equilibrium of species distributions with climate. The assumption was that the greater the difference between modeled bioclimatic envelope and the occupied distribution, the greater the likelihood that species distribution would not be at equilibrium with contemporary climate. On average, amphibians occupied 30% to 57% of their potential distributions. Although patterns differed across regions, there were no significant differences among lineages. Species in the Neotropic, Afrotropics, Indo-Malay, and Palaearctic occupied a smaller proportion of their potential distributions than species in the Nearctic, Madagascar, and Australasia. We acknowledge that our models underestimate non equilibrium, and discuss potential reasons for the observed patterns. From a modeling perspective our results support the view that at global scale bioclimatic envelope models might perform similarly across lineages but differently across regions. |
| first_indexed | 2024-12-13T07:47:03Z |
| format | Article |
| id | doaj.art-d52840da146241eeb2d00682b08fbc9e |
| institution | Directory Open Access Journal |
| issn | 1932-6203 |
| language | English |
| last_indexed | 2024-12-13T07:47:03Z |
| publishDate | 2012-01-01 |
| publisher | Public Library of Science (PLoS) |
| record_format | Article |
| series | PLoS ONE |
| spelling | doaj.art-d52840da146241eeb2d00682b08fbc9e2022-12-21T23:54:48ZengPublic Library of Science (PLoS)PLoS ONE1932-62032012-01-0174e3442010.1371/journal.pone.0034420Equilibrium of global amphibian species distributions with climate.Mariana MunguíaCarsten RahbekThiago F RangelJose Alexandre F Diniz-FilhoMiguel B AraújoA common assumption in bioclimatic envelope modeling is that species distributions are in equilibrium with contemporary climate. A number of studies have measured departures from equilibrium in species distributions in particular regions, but such investigations were never carried out for a complete lineage across its entire distribution. We measure departures of equilibrium with contemporary climate for the distributions of the world amphibian species. Specifically, we fitted bioclimatic envelopes for 5544 species using three presence-only models. We then measured the proportion of the modeled envelope that is currently occupied by the species, as a metric of equilibrium of species distributions with climate. The assumption was that the greater the difference between modeled bioclimatic envelope and the occupied distribution, the greater the likelihood that species distribution would not be at equilibrium with contemporary climate. On average, amphibians occupied 30% to 57% of their potential distributions. Although patterns differed across regions, there were no significant differences among lineages. Species in the Neotropic, Afrotropics, Indo-Malay, and Palaearctic occupied a smaller proportion of their potential distributions than species in the Nearctic, Madagascar, and Australasia. We acknowledge that our models underestimate non equilibrium, and discuss potential reasons for the observed patterns. From a modeling perspective our results support the view that at global scale bioclimatic envelope models might perform similarly across lineages but differently across regions.http://europepmc.org/articles/PMC3325238?pdf=render |
| spellingShingle | Mariana Munguía Carsten Rahbek Thiago F Rangel Jose Alexandre F Diniz-Filho Miguel B Araújo Equilibrium of global amphibian species distributions with climate. PLoS ONE |
| title | Equilibrium of global amphibian species distributions with climate. |
| title_full | Equilibrium of global amphibian species distributions with climate. |
| title_fullStr | Equilibrium of global amphibian species distributions with climate. |
| title_full_unstemmed | Equilibrium of global amphibian species distributions with climate. |
| title_short | Equilibrium of global amphibian species distributions with climate. |
| title_sort | equilibrium of global amphibian species distributions with climate |
| url | http://europepmc.org/articles/PMC3325238?pdf=render |
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