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      Anurofauna da Floresta Estacional Semidecidual da Estação Ecológica dos Caetetus, Sudeste do Brasil Translated title: Anuran fauna of the Semi-deciduous Forest of the Estação Ecológica dos Caetetus, Southeastern Brazil

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          Abstract

          A Floresta Estacional Semidecidual é considerada uma das formações florestais mais ameaçadas e suprimidas pela expansão agrícola do início do século passado, com sua cobertura vegetal reduzida a menos de 8% da original. Estudos sobre taxocenoses de anfíbios anuros nessa formação florestal ainda são escassos, mesmo quando consideramos as poucas áreas de floresta primária que restaram. Apresentamos neste estudo os resultados de um levantamento de espécies de anfíbios anuros da Estação Ecológica dos Caetetus, uma unidade de conservação que abriga importante remanescente de Floresta Estacional Semidecidual na região Centro-oeste do estado de São Paulo, região considerada prioritária para conservação no estado. Foram registradas 34 espécies distribuídas em nove famílias, dentre as quais Hylidae e Leptodactylidae foram as que apresentaram as maiores riquezas, com 14 e oito espécies, respectivamente. A elevada riqueza de espécies da área, principalmente da família Hylidae, provavelmente está associada tanto à grande heterogeneidade ambiental dessa formação florestal como à sua localização em área de transição entre áreas de Cerrado e de Floresta Ombrófila. A alta riqueza de espécies, quando comparada à de outras áreas de mesma formação florestal, bem como a presença de representantes das famílias Centrolenidae, Craugastoridae e Hylodidae, que são dependentes de habitats florestais, atestam o bom estado de conservação e a importância regional desse remanescente florestal.

          Translated abstract

          Semi-deciduous Forest is one of the most threatened and deforested vegetation types of Brazil due to its land conversion to agriculture in the beginning of the 20th Century; its distribution is now reduced to less than 8% of its original extent. Studies about anuran taxocenosis associated to these forests are scarce, even when we consider the remaining areas of pristine forest. We present herein results from an amphibian survey at the Estação Ecológica dos Caetetus, a conservation unit with a singular preserved Semi-deciduous Forest from the Middle-West region of the State of São Paulo, located inside the priority areas for conservation on São Paulo State. We provided here data on species richness, composition, geographical distribution, and natural history notes for each taxa found in the area. We recorded 34 anuran species belonging to nine families, of which Hylidae and Leptodactylidae are the two most speciose families, with 14 and eight species respectively. The high species richness in the area, mainly in the family Hylidae, can be explained by both the high environmental heterogeneity of this remnant and its geographic location between Cerrado savannas and Atlantic rain forest areas. Its high species richness when compared with other localities of the same vegetation type, as well as the presence of forest dependent species in the families Centrolenidae, Hylodidae and Craugastoridae, indicate both the good conservation status and the regional importance of this forest remnant.

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          Amphibians of Argentina

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            Annual activity patterns of anurans in a seasonal neotropical environment.

            At Panguana, a study in the upper Amazon basin, 7 different aquatic breeding sites of anurans were investigated from Nov. 1, 1981 to Oct. 31, 1982. Rainfall in this area is seasonal. Only 20% of the total annual precipitation was maesured during the dry period, which lasted from mid-March until mid-September 1982. The reproductive periods of the species were highly affected by the rainfall distribution. Calling males and/or gravid females of 46 species were found during the study period. 37.0% of the anuran species were exclusively, and 43.5% predominantly, active during the rainy season. Plots of 100 m(2) were established at 6 aquatic sites in primary rainforest. A total of 2126 frogs was counted; 93.2% of these were made during the rainy season. A maximum of 378 individuals were found during one check in the plot at the permanent pond. At this site high concentrations of individuals and large choruses were found at the beginning of the rainy season. As soon as favourable temporary aquatic sites were established, reproductive activities decreased at the permanent pond and increased at temporary breeding sites.
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              Annual Patterns of Breeding Activity in Atlantic Rainforest Anurans

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                Author and article information

                Contributors
                Role: ND
                Role: ND
                Role: ND
                Journal
                bn
                Biota Neotropica
                Biota Neotrop.
                Instituto Virtual da Biodiversidade | BIOTA - FAPESP (Campinas )
                1676-0611
                March 2010
                : 10
                : 1
                : 275-291
                Affiliations
                [1 ] Universidade de São Paulo Brazil
                [2 ] Universidade Estadual Paulista Brazil
                Article
                S1676-06032010000100024
                10.1590/S1676-06032010000100024
                eece7c6f-11b1-4a21-b681-6f1264e46ca4

                http://creativecommons.org/licenses/by/4.0/

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                SciELO Brazil

                Self URI (journal page): http://www.scielo.br/scielo.php?script=sci_serial&pid=1676-0603&lng=en
                Categories
                BIODIVERSITY CONSERVATION

                Animal science & Zoology
                anuran amphibians,natural history,inventory,Semi-deciduous Forest,Sao Paulo State,anfíbios anuros,história natural,inventário,Floresta Estacional Semidecidual,estado de São Paulo

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