Geographical Gradients in Argentinean Terrestrial Mammal Species Richness and Their Environmental Correlates
We analysed the main geographical trends of terrestrial mammal species richness (SR) in Argentina, assessing how broad-scale environmental variation (defined by climatic and topographic variables) and the spatial form of the country (defined by spatial filters based on spatial eigenvector mapping (S...
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| Format: | Article |
| Language: | English |
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Wiley
2012-01-01
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| Series: | The Scientific World Journal |
| Online Access: | http://dx.doi.org/10.1100/2012/819328 |
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| author | Ana L. Márquez Raimundo Real Marta S. Kin José Carlos Guerrero Betina Galván A. Márcia Barbosa Jesús Olivero L. Javier Palomo J. Mario Vargas Enrique Justo |
| author_facet | Ana L. Márquez Raimundo Real Marta S. Kin José Carlos Guerrero Betina Galván A. Márcia Barbosa Jesús Olivero L. Javier Palomo J. Mario Vargas Enrique Justo |
| author_sort | Ana L. Márquez |
| collection | DOAJ |
| description | We analysed the main geographical trends of terrestrial mammal species richness (SR) in Argentina, assessing how broad-scale environmental variation (defined by climatic and topographic variables) and the spatial form of the country (defined by spatial filters based on spatial eigenvector mapping (SEVM)) influence the kinds and the numbers of mammal species along these geographical trends. We also evaluated if there are pure geographical trends not accounted for by the environmental or spatial factors. The environmental variables and spatial filters that simultaneously correlated with the geographical variables and SR were considered potential causes of the geographic trends. We performed partial correlations between SR and the geographical variables, maintaining the selected explanatory variables statistically constant, to determine if SR was fully explained by them or if a significant residual geographic pattern remained. All groups and subgroups presented a latitudinal gradient not attributable to the spatial form of the country. Most of these trends were not explained by climate. We used a variation partitioning procedure to quantify the pure geographic trend (PGT) that remained unaccounted for. The PGT was larger for latitudinal than for longitudinal gradients. This suggests that historical or purely geographical causes may also be relevant drivers of these geographical gradients in mammal diversity. |
| format | Article |
| id | doaj-art-2feefca46091460fa22f1529377bf565 |
| institution | Kabale University |
| issn | 1537-744X |
| language | English |
| publishDate | 2012-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | The Scientific World Journal |
| spelling | doaj-art-2feefca46091460fa22f1529377bf5652025-02-03T01:30:17ZengWileyThe Scientific World Journal1537-744X2012-01-01201210.1100/2012/819328819328Geographical Gradients in Argentinean Terrestrial Mammal Species Richness and Their Environmental CorrelatesAna L. Márquez0Raimundo Real1Marta S. Kin2José Carlos Guerrero3Betina Galván4A. Márcia Barbosa5Jesús Olivero6L. Javier Palomo7J. Mario Vargas8Enrique Justo9Biogeography, Diversity, and Conservation Research Team, Department of Animal Biology, Faculty of Sciences, University of Malaga, 29071 Malaga, SpainBiogeography, Diversity, and Conservation Research Team, Department of Animal Biology, Faculty of Sciences, University of Malaga, 29071 Malaga, SpainDepartamento de Ciencias Naturales, Facultad de Ciencias, Universidad Nacional de La Pampa, Avenida Uruguay 151, Santa Rosa 6300, ArgentinaInstituto de Ecología y Ciencias Ambientales (IECA), Facultad de Ciencias, Universidad de la República, Iguá 4225, esq. Mataojo, Montevideo 11400, UruguayDepartamento de Ciencias Naturales, Facultad de Ciencias, Universidad Nacional de La Pampa, Avenida Uruguay 151, Santa Rosa 6300, Argentina“Rui Nabeiro” Biodiversity Chair, CIBIO, University of Évora, 7000-890 Évora, PortugalBiogeography, Diversity, and Conservation Research Team, Department of Animal Biology, Faculty of Sciences, University of Malaga, 29071 Malaga, SpainBiogeography, Diversity, and Conservation Research Team, Department of Animal Biology, Faculty of Sciences, University of Malaga, 29071 Malaga, SpainBiogeography, Diversity, and Conservation Research Team, Department of Animal Biology, Faculty of Sciences, University of Malaga, 29071 Malaga, SpainDepartamento de Ciencias Naturales, Facultad de Ciencias, Universidad Nacional de La Pampa, Avenida Uruguay 151, Santa Rosa 6300, ArgentinaWe analysed the main geographical trends of terrestrial mammal species richness (SR) in Argentina, assessing how broad-scale environmental variation (defined by climatic and topographic variables) and the spatial form of the country (defined by spatial filters based on spatial eigenvector mapping (SEVM)) influence the kinds and the numbers of mammal species along these geographical trends. We also evaluated if there are pure geographical trends not accounted for by the environmental or spatial factors. The environmental variables and spatial filters that simultaneously correlated with the geographical variables and SR were considered potential causes of the geographic trends. We performed partial correlations between SR and the geographical variables, maintaining the selected explanatory variables statistically constant, to determine if SR was fully explained by them or if a significant residual geographic pattern remained. All groups and subgroups presented a latitudinal gradient not attributable to the spatial form of the country. Most of these trends were not explained by climate. We used a variation partitioning procedure to quantify the pure geographic trend (PGT) that remained unaccounted for. The PGT was larger for latitudinal than for longitudinal gradients. This suggests that historical or purely geographical causes may also be relevant drivers of these geographical gradients in mammal diversity.http://dx.doi.org/10.1100/2012/819328 |
| spellingShingle | Ana L. Márquez Raimundo Real Marta S. Kin José Carlos Guerrero Betina Galván A. Márcia Barbosa Jesús Olivero L. Javier Palomo J. Mario Vargas Enrique Justo Geographical Gradients in Argentinean Terrestrial Mammal Species Richness and Their Environmental Correlates The Scientific World Journal |
| title | Geographical Gradients in Argentinean Terrestrial Mammal Species Richness and Their Environmental Correlates |
| title_full | Geographical Gradients in Argentinean Terrestrial Mammal Species Richness and Their Environmental Correlates |
| title_fullStr | Geographical Gradients in Argentinean Terrestrial Mammal Species Richness and Their Environmental Correlates |
| title_full_unstemmed | Geographical Gradients in Argentinean Terrestrial Mammal Species Richness and Their Environmental Correlates |
| title_short | Geographical Gradients in Argentinean Terrestrial Mammal Species Richness and Their Environmental Correlates |
| title_sort | geographical gradients in argentinean terrestrial mammal species richness and their environmental correlates |
| url | http://dx.doi.org/10.1100/2012/819328 |
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