Impacto do desmatamento e formação de pastagens sobre a anurofauna de serapilheira em Rondônia

Bernarde, Paulo Sérgio; Macedo, Lílian Cristina

doi:10.1590/s0073-47212008000400006

Cited by 29 publications

(20 citation statements)

References 17 publications

(26 reference statements)

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“…For example, in the Caatinga, VIEIRA et al (2009) recorded only a few of the species observed in the present study, but identified seven of the reproductive modes encountered here. By contrast, the species composition recorded by studies in Cerrado-dominated vegetation in Rondônia is more similar to that of the present study (14 shared species), but once again, with seven reproductive modes in common (BERNARDE & MACEDO 2008, TURCI & BERNARDE 2008. In other words, even though distinct sets of species may be present at different sites, the similarities in their reproductive modes may be determined by the ecological characteristics of the site.…”

Section: Discussionsupporting

confidence: 72%

“…Changes in the landscape, such as deforestation and habitat fragmentation, may also lead to changes in the reproductive modes found in a particular region, local species extinction, and possibly more specialized reproductive modes (e.g. BERNARDE & MACEDO 2008). However, it is also possible to observe reproductive plasticity in amphibians that do not succumb in the face of environmental changes, for instance Dendropsophus ebraccatus (Cope, 1874).…”

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confidence: 99%

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Species composition and reproductive modes of anurans from a transitional Amazonian forest, Brazil

Bitar¹,

Pinheiro²,

Abe³

et al. 2012

Zoologia (Curitiba)

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ABSTRACT. The aim of the present study was to describe the species composition and reproductive modes of an anuran community from a transition area between the Amazonia and Cerrado biomes. Data were collected in habitats exhibiting different degrees of anthropogenic degradation. The community (35 species) identified during the present study presented a larger number of reproductive modes when compared with those from Cerrado communities, but smaller than those of other sites in the Amazon. While all nine modes were recorded in the gallery forests of local rivers and streams, anthropogenic habitats (rubber tree orchards and soybean fields) were occupied only by species adapted to environments where humidity is low, typical of the Cerrado. Overall, the anuran fauna of the study area was characterized by species that depend on access to water bodies for their reproduction, with only a few specialized species able to reproduce in dry environments.

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Section: Discussionsupporting

confidence: 72%

mentioning

confidence: 99%

Species composition and reproductive modes of anurans from a transitional Amazonian forest, Brazil

Bitar¹,

Pinheiro²,

Abe³

et al. 2012

Zoologia (Curitiba)

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“…Leptodactylus (L.) lineatus was the fourth most abundant anuran species captured in pitfall traps (BERNARDE & MACEDO, 2008). By comparison, during a snake community study, only four individuals (three juveniles amid the leaf litter in the forest and one adult under a fallen tree trunk in pasture areas) were observed in 960 hours of visual encounter surveys (BERNARDE & ABE, 2006).…”

Section: Resultsmentioning

confidence: 99%

“…During a research studies conducted on anuran communities in the municipality of Espigão do Oeste, State of Rondônia (Brazil) (see BERNARDE, 2007;BERNARDE & MACEDO, 2008), we captured several individuals of Leptodactylus (L.) lineatus. In this paper we present data on the occurrence of this species (males, females and juveniles) over the course of a year and some reproductive information (calling activity of males, number and diameter of ovarian eggs in females).…”

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Seasonality, age structure and reproduction of Leptodactylus (Lithodytes) lineatus (Anura, Leptodactylidae) in Rondônia state, southwestern Amazon, Brazil

Bernarde

Kokubum

2009

Iheringia, Sér. Zool.

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Leptodactylus(Lithodytes) lineatus (Schneider, 1799) is an Amazonian leaf litter frog considered rare or uncommon in several studies on anuran communities. Despite being a widely distributed frog in Amazonian forests, knowledge of the biology and ecology of this species is relatively scarce. This species has been reported to live in association with leaf-cutter ant nests (Atta spp.) during the breeding period. In this paper we present data on the seasonality of this species and some reproductive information gathered at a locality of Rondônia state, northwestern Brazil. Field work was carried out between April 2001 and March 2002, with the use of pitfall traps with drift fences as a survey method. Leptodactylus (L.) lineatus had a higher capture frequency in this locality compared to that of other studies carried out in other Amazonian localities, possibly because this species has secretive habits, such as calling and breeding from nests of leaf-cutting ants, and are difficult to find during visual encounter surveys. The breeding period occurs between October and March. Calling males and egg-bearing females were found between September and February and juvenile recruitment occurred mainly from the end of the rainy season to the beginning of the dry season (February to June). Males and females show sexual dimorphism in SVL, females being significantly larger than males. The number of ovarian eggs per female varies from 110 to 328 and analyses indicate that there is a significant correlation with SVL.

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“…Ainda, comunidades de anfíbios e pequenos répteis em áreas de floresta amazônica apresentam rápida resposta às alterações na cobertura florestal (e.g. Tocher et al 1997, Gardner et al 2007, Bernarde & Macedo 2008, Souza et al 2008, mesmo às alterações discretas como no corte florestal seletivo (Vitt et al 1998).…”

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Diversidade de anfíbios e répteis Squamata na região do baixo rio Purus, Amazônia Central, Brasil

2013

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Abstract:The lower Purus River Basin, Central Amazonia -Brazil, represents an area of prominent interest for conservation of amphibians and reptiles. However, there is little available information about these groups for flooded and nonflooded forests, the major landscapes in this region. We sampled a representative area over two periods : 2004-2005 and 2009-2010. We used efficient and complementary techniques for sampling the herpetofauna in rainforests: time constrained audio-visual search (TAVS), pitfall traps with drift fence (PFDF) and doubleended funnel traps with drift fence (FTDF). We recorded a total of 160 species, including 75 amphibians (73 frogs and two caecilians) and 85 reptiles (34 lizards and 51 snakes). The occurrence of the anuran Dendropsophus allenorum represents the first record for Brazil. Comparing the efficiency of the sampling methods, the TAVS was the best method in sampling efficiency for the majority of the herpetofauna species; followed by the PFDF, efficient in sampling terrestrial frogs and litter lizards in the nonflooded forests. We did not use the PFDF in the flooded forests because the soil was water saturated. Despite its low efficiency in sampling terrestrial frogs and litter lizards, the FTDF, was efficient in snake capture and easily adaptable to the saturated soil in flooded forests. The greatest richness of species and groups was found in the nonflooded forests. Families of fossorial and litter species were mostly absent from the flooded forests. However, in the flooded forests we found a large number of arboreal frogs (Hylidae) and of larger heliothermic lizards (Teiidae). When we evaluated each sample period separately, we found a similar richness of the herpetofauna between the different types of forest landscapes, with a bias towards higher diversity in the nonflooded forests. In spite of similar species numbers, the nonflooded and flooded forests had different species assemblages. The total amphibian and Squamata reptilian diversity between the nonflooded and flooded forests (beta-β diversity), sites with more widespread landscapes, possibly represents the major contribution to the regional herpetofauna diversity in the lower Purus River Basin (Gama-γ diversity). Resumo: A região do baixo rio Purus na Amazônia Central -Brasil representa uma área de relevante interesse para conservação de anfíbios e répteis. No entanto, há pouca informação disponível sobre estes grupos taxonômicos para áreas de florestas de terra firme e florestas de várzea, principais paisagens nesta região. Nesse estudo, realizamos uma amostragem ampla em esforço e área, em dois períodos: 2004-2005 e 2009-2010. Utilizamos técnicas complementares eficientes na amostragem da herpetofauna em florestas tropicais: procura ativa limitada por tempo (PLT), armadilhas de interceptação e queda (AIQ) e armadilhas de interceptação com funis duplos (AIF). Foram registradas 160 espécies, sendo 75 de anfíbios (73 anuros e dois gimnofionos) e 85 de répteis (34 lagartos e 51 serpentes). O registro do anuro Dendropso...

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Impacto do desmatamento e formação de pastagens sobre a anurofauna de serapilheira em Rondônia

Cited by 29 publications

References 17 publications

Species composition and reproductive modes of anurans from a transitional Amazonian forest, Brazil

Species composition and reproductive modes of anurans from a transitional Amazonian forest, Brazil

Seasonality, age structure and reproduction of Leptodactylus (Lithodytes) lineatus (Anura, Leptodactylidae) in Rondônia state, southwestern Amazon, Brazil

Diversidade de anfíbios e répteis Squamata na região do baixo rio Purus, Amazônia Central, Brasil

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