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Carvalho WD, Lourenço EC, Costa LM, Bergallo HG, Esbérard CEL. Patterns and drivers determining phyllostomid bat diversity in land-bridge islands off the south-east coast of Brazil. Biol J Linn Soc Lond 2021. [DOI: 10.1093/biolinnean/blab112] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022]
Abstract
Abstract
Few studies that apply the theory of island biogeography have considered the functional and phylogenetic dimensions of diversity. However, the joint use of the three diversity dimensions, i.e. taxonomic, functional and phylogenetic, can help us to gain a better understanding of the mechanisms underlying ecological and evolutionary processes. Here, we compare phyllostomid bat assemblages between five land-bridge islands off the south-east coast of Brazil and compare these islands with three sites on the mainland. For this, we have estimated the three dimensions of α- and β-diversity, nestedness and community indexes based on mean trait values for the islands and the mainland. The mainland showed higher species richness and taxonomic, functional and phylogenetic diversity. In addition, only species richness and phylogenetic diversity were positively related to island area. Taxonomically and functionally, the poorest assemblages (minor islands) were subgroups of the richer assemblages (mainland and larger islands). Taken together, our results show that bat assemblages of smaller islands tend to be more sensitive to changes in species richness than those of larger islands, with the larger islands working as a ‘source’ of species for small islands. These results demonstrate the high conservation value of the larger islands, which has direct consequences for local population dynamics of phyllostomid bats.
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Affiliation(s)
- William Douglas Carvalho
- Laboratório de Diversidade de Morcegos, Departamento de Biologia Animal, Instituto de Biologia, Universidade Federal Rural do Rio de Janeiro, CP 74507, 23890-000 Seropédica, RJ, Brazil
- Programa de Pós-Graduação em Biodiversidade e Meio Ambiente, Universidade Federal da Grande Dourados, 79804-970, Rod. Dourados/Itahum, Km 12 – Unidade II, Dourados, MS, Brazil
- Programa de Pós-Graduação em Biodiversidade Tropical, Universidade Federal do Amapá, 68903-419, Rod. Juscelino Kubitscheck, S/N – Jardim Marco Zero, Macapá, AP, Brazil
| | - Elizabete Captivo Lourenço
- Laboratório de Diversidade de Morcegos, Departamento de Biologia Animal, Instituto de Biologia, Universidade Federal Rural do Rio de Janeiro, CP 74507, 23890-000 Seropédica, RJ, Brazil
- Laboratório de Ecologia de Mamíferos, Departamento de Ecologia, Instituto de Biologia, Universidade do Estado do Rio de Janeiro, 20550-013, Rua São Francisco Xavier, 524, Rio de Janeiro, RJ, Brazil
| | - Luciana Moraes Costa
- Laboratório de Diversidade de Morcegos, Departamento de Biologia Animal, Instituto de Biologia, Universidade Federal Rural do Rio de Janeiro, CP 74507, 23890-000 Seropédica, RJ, Brazil
- Laboratório de Ecologia de Mamíferos, Departamento de Ecologia, Instituto de Biologia, Universidade do Estado do Rio de Janeiro, 20550-013, Rua São Francisco Xavier, 524, Rio de Janeiro, RJ, Brazil
| | - Helena Godoy Bergallo
- Laboratório de Ecologia de Mamíferos, Departamento de Ecologia, Instituto de Biologia, Universidade do Estado do Rio de Janeiro, 20550-013, Rua São Francisco Xavier, 524, Rio de Janeiro, RJ, Brazil
| | - Carlos Eduardo Lustosa Esbérard
- Laboratório de Diversidade de Morcegos, Departamento de Biologia Animal, Instituto de Biologia, Universidade Federal Rural do Rio de Janeiro, CP 74507, 23890-000 Seropédica, RJ, Brazil
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