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Accueil du site → Master → Brésil → 2013 → Diversidade, distribuição espaço-temporal e co-ocorrência com predadores em taxocenoses de girinos de anuros em uma área de caatinga no Alto Sertão Sergipano

Universidade Federal de Sergipe (2013)

Diversidade, distribuição espaço-temporal e co-ocorrência com predadores em taxocenoses de girinos de anuros em uma área de caatinga no Alto Sertão Sergipano

Silva, Izabel Regina Soares da

Titre : Diversidade, distribuição espaço-temporal e co-ocorrência com predadores em taxocenoses de girinos de anuros em uma área de caatinga no Alto Sertão Sergipano

Auteur : Silva, Izabel Regina Soares da

Université de soutenance : Universidade Federal de Sergipe

Grade : Mestrado em Ecologia e Conservação 2013

Résumé
Several mechanisms mediate the richness, diversity, abundance and distribution of tadpoles in the ponds. The purpose of this study was to characterize the composition of tadpoles of an area of Caatinga in the State of Sergipe and evaluate it with respect to use temporal (time of occurrence) and spatial (within the preferred local water bodies) in the dams. Looking for understand the influence of some environmental parameters and predators on the abundance of tadpoles. The study was conducted at the Natural Monument Grota Angico in the period September 2011 to August 2012. The sample of tadpoles and predators were doing in nine dams of the locality. The biotic and abiotic factors were collected monthly in the dams that had water. 2117 tadpoles and 710 predators were collected. The alpha diversity was similar between the dams and the beta diversity was considered relatively low. Most tadpoles had high spatial niche breadth showing a general use of space. The spatial and temporal overlaps showed segregation between species in the use of micro-habitats and seasons. None of the species showed association between their abundances and the physical-chemical and structural of the dams. The richness and abundance were correlated to rainfall. Tadpoles and predators differed on the use of micro-habitat and only three species showed a positive correlation with the predators. The results were in some ways similar to other studies in the Caatinga biome and in dry areas of the country. Studies in the Caatinga are still a challenge to researchers, especially about the frogs of the Biome, and studies should be encouraged, so that you can know more about the biology of these species and so you can get better conservation strategies for the group.

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