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| Author(s): |
Silara Fatima Batista
Total Authors: 1
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| Document type: | Master's Dissertation |
| Press: | São José do Rio Preto. 2017-03-20. |
| Institution: | Universidade Estadual Paulista (Unesp). Instituto de Biociências Letras e Ciências Exatas. São José do Rio Preto |
| Defense date: | 2017-02-23 |
| Advisor: | Otavio Augusto Vuolo Marques |
| Abstract | |
The species composition in an area may be influenced by many variables, which also tend to influence the structure of such community. These variables can be biotic, like the ecological interactions between species and may also be abiotic, such as climate and topography variations, that usually occur in heterogeneous environments. There seems to be a positive relationship between habitat heterogeneity and species richness, although this relationship is difficult to discriminate in nature, because it is also influenced by intrinsic factors, as the biology and evolutionary history of species and extrinsic, as the evolutionary history of the environment. The nebular fields, singular physiognomy found in few areas of the Serra do Mar, have an important evolutionary history in the Atlantic Forest and its herpetofauna is practilly unknown. In this study, the species composition of snakes and lizards was catalogued for the mosaic formed by forests and nebular fields in the highland area of the Núcleo Curucutu of the Parque Estadual da Serra do Mar. In addition, we investigated the distribution and the beta diversity of these groups along these physiognomies. Nineteen species were found, including 13 of snakes and six of lizards. The forested physiognomy showed almost twice as many species as the field physiognomy presented. Of the total species, seven occur in both. The results obtained so far suggest that a greater sampling effort is needed to inventory this community, since rarefaction curves showed no tendency to stabilize. Moreover, this effort should also be maximized to determine if the substitution of species between the physiognomies is really average and whether the distribution is random or structured, given that the use of statistical tests based on qualitative or quantitative data presented divergent results. (AU) | |
| FAPESP's process: | 15/14135-0 - Diversity and distribution of snakes and lizards in a mosaic of physiognomies |
| Grantee: | Silara Fatima Batista |
| Support Opportunities: | Scholarships in Brazil - Master |