AimHuman‐driven impacts constantly threat amphibians, even in largely protected regions such as the Amazon. The Brazilian Amazon is home to a great diversity of amphibians, several of them currently threatened with extinction. We investigated how climate change, deforestation and establishment of hydroelectric dams could affect the geographic distribution of Amazonian amphibians by 2030 and midcentury.LocationThe Brazilian Amazon.MethodsWe overlapped the geographic distribution of 255 species with the location of hydroelectric dams, models of deforestation and climate change scenarios for the future.ResultsWe found that nearly 67% of all species and 54% of species with high degree of endemism within the Legal Brazilian Amazon would lose habitats due to the hydroelectric overlapping. In addition, deforestation is also a potential threat to amphibians, but had a smaller impact compared to the likely changes in climate. The largest potential range loss would be caused by the likely increase in temperature. We found that five amphibian families would have at least half of the species with over 50% of potential distribution range within the Legal Brazilian Amazon limits threatened by climate change between 2030 and 2050.Main conclusionsAmphibians in the Amazon are highly vulnerable to climate change, which may cause, directly or indirectly, deleterious biological changes for the group. Under modelled scenarios, the Brazilian Government needs to plan for the development of the Amazon prioritizing landscape changes of low environmental impact and economic development to ensure that such changes do not cause major impacts on amphibian species while reducing the emission of greenhouse gases.
Abstract:The geographic distribution of Scinax garbei includes Bolivia, Colombia, Ecuador, Peru, Venezuela, and Brazil (eastern and western regions). In this study, we present an extension of the geographic distribution in the Brazilian Amazonia and the first record of the species in the state of Amapá. The new record was obtained at Parque Natural Municipal do Cancão, in the municipality of Serra do Navio, state of Amapá, Brazil.
Abstract:We report the first record of Hyalinobatrachium iaspidiense (Ayarzaguena, 1992) from Amapá state, Brazil. This record is 1,020 km east from the type locality at Quebrada de Jaspe, San Ignacio de Yuraní, Bolívar state, Venezuela, and extends the distribution of the species 345 km north of the nearest known locality in Para. We also provide a map of the localities reported in the literature.
In this study, the first survey of anuran species in the Cancão Municipal Natural Park is presented, a protected area of approximately 370 hectares of Amazonian forest located in the northwest center region of the state of Amapá, Brazil. The work was performed during the dry and rainy season, through active visual and auditory survey, totaling 216 man hours of sampling effort. Forty-nine species of anuran amphibians were recorded in the Cancão Municipal Natural Park, including three new records: Hyalinobatrachium
ockendeni, and Scinax
garbei. Three species, Hyalinobatrachium
pulchripecta, and Anomaloglossus
baeobatrachus, are listed as Data Deficient and one is listed as Vulnerable (Atelopus
hoogmoedi) according red lists of IUCN. The rarefaction curve cumulative species did not reach an asymptote, indicating that site has potential for species that have not yet been recorded. Nine species were represented by only one individual and were considered rare in the studied environments, eight species were defined as common, and the 32 remaining species were classified as having intermediary abundance. Our data indicated that Cancão Municipal Natural Park contains a considerable portion of the anurans species richness of Amapá state, turn the area into a place of great importance for the conservation of the anurans of the Eastern Amazon.
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