Anurofauna em uma área na Depressão Periférica, no centro-oeste do estado de São Paulo, Brasil

Abstract

fauna in a Peripheral Depression area in the middle-west of São Paulo State, Brazil. Biota Neotrop. 13(2): http://www.biotaneotropica.org.br/v13n2/en/abstract?invent ory+bn01313022013Abstract: In the last eight decades, São Paulo state has been a center of anurans research. However, at centralwest of São Paulo state, studies in Peripheral Depression (PD) communities are scarce. In order to bring new information, our objectives were surveying frogs in PD area, linking our results with other data and comparing with known results from crest of the Botucatu cuesta. The inventory was conducted during 13 months (December 2008 to December 2009, and data has obtained in 24 days sampling. The frogs were investigated in sites that anurans currently using for reproduction, by traditional field methods, based on visual-encounter survey and auditory. We recorded 29 species into 12 genera and six families. The high frog diversity was considered because this area has suffered human action. Although the most of the species has been identified in open areas, we associated this high number due to forest remnants in interfluves. Therefore, the differences between our study and others at the same region were due low number of related species on the forest environment. The absence of similar topography at PD probably was a determinant factor for the low number of species in forest habitat. The amphibian activity was higher during hot and humid period and a decrease in the cold and dry period. The most part of anurans had a restricted activity during rainy season; however, each species has its own period and peak of calling activity. The similarity results indicate the most part of higher clusters was observed between species that different requirements for habitat and microhabitat. We believe that, differences in temporal pattern distribution of organisms in the community are of great importance in sharing resources and adjusting the species in the community, which contributed to the high number of amphibians and observed the coexistence of taxa in the study area. Resumo: A anurofauna do estado de São Paulo, nas últimas oito décadas, tem sido foco do estudo de importantes grupos de pesquisa em anfíbios anuros. Porém, pesquisas realizadas com comunidades na área da Depressão Periférica do centro-oeste paulista ainda são escassas. A fim de trazer novas informações sobre essa região, nosso objetivo foi inventariar a anurofauna de uma área na Depressão Periférica, associando os resultados com dados da literatura e confrontando os mesmos com aqueles conhecidos para a anurofauna no altiplano da Cuesta de Botucatu. O inventário foi realizado a partir dos dados obtidos em 24 dias de amostragem, decorridos 13 meses de coleta (dezembro de 2008 a dezembro de 2009). Os anuros foram amostrados em potenciais sítios reprodutivos, pelos métodos de encontro visual e busca auditiva. Foram registradas 29 espécies distribuídas em 12 gêneros e seis famílias. Apesar da maioria das espécies serem predominantemente de áreas abertas, consideramos a riqueza...

Amphibians in a transition region between the Cerrado and the Atlantic Forest,west-central region of the State of São Paulo, Brazil

“…(10) In recent years there has been a significant increase in the number of published studies on the 202 diversity of amphibians in the Cerrado and seasonal forest in the state of São Paulo. Few studies describe the taxocenoses of anurans of the Cerrado and its ecotone with the Semideciduous Seasonal Forest of São Paulo, with a special attention given to those conducted in Guararapes, (11) Rio Claro, (12) Itirapina and Brotas, (13) Assis, (14) Luiz Antonio, (15) Pedregulho, (16) ..Avaré, (17) ..Águas..de..Santa..Bárbara, (18) Angatuba, (19) Anhembi, (20) Jaú and Agudos, (21) Vassununga, (22) and Bauru. (23) The strong anthropic pressure, the high level of endemism and the decline in anurans populations registered in this biome reinforce the importance of taxonomical inventories and studies about the ecology of anurans in Cerrado areas.…”