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    Como os anfíbios anuros respondem a alterações das fitofisionomias do cerrado?
    (Universidade Federal de São Paulo, 2017-04-27) Oliveira, Vitor Freitas [UNIFESP]; Brasileiro, Cinthia Aguirre [UNIFESP]; Universidade Federal de São Paulo (UNIFESP)
    Cerrado is a mosaic of phytophysiognomies composed of grasslands and forests. Herpetofauna of cerrado's grasslands have a greater diversity than cerrado's forests areas. Our aim was to evaluate how anuran amphibians respond to the increase in the complexity of vegetation structure in cerrado's grasslands in the medium term. We tested the hypothesis that the diversity of amphibians will be smaller after increasing the structural complexity of the vegetation of the phytophysiognomies. Our study was carried out at the Itirapina Ecological Station in 2000-2001 and in 2015-2016. After 11 years without burning, the cerrado's campo sujo showed a higher density of grasses and seedlings and a decrease in the density of shrubs, herbaceous and low plants while in the cerrado's campo cerradofield showed higher density of seedlings and smaller density of average plants. The richness of anurans was similar in both phytophysiognomies between the sampling periods and related to the low plant density. However, the abundance of anurans was lower only in campo sujo and this difference was related to the density of clumps, low plants and high plants. The increase of vegetation can interfere in anurans advertisement call, affecting the attraction of females, besides affecting the survival of tadpoles in puddles due to canopy cover and decrease of water temperature and primary productivity. The composition of the species was different between the sampling periods. The relative abundance of Leptodactylus mystacinus and Physalaemus nattereri was higher in both phytophysiognomies in 2015, while the abundances of Physalaemus marmoratus L. furnarius, L. fuscus and P. cuvieri were lower. Our study shows that there is a change in the community structure of the anurans by the cange of complexity of the Cerrado's phytophysiognomies, however, changes in the anuran community seem to be slow and gradual and long term studies may show patterns different from those observed in this study.