DISTRIBUIÇÃO POTENCIAL, USO DE HÁBITAT E ESTIMATIVAS POPULACIONAIS DO GALO-DA-SERRA (Rupicola rupicola, AVES: COTINGIDAE) NA APA MAROAGA E ENTORNO, PRESIDENTE FIGUEIREDO-AM, COM RECOMENDAÇÕES PARA SUA CONSERVAÇÃO

AUTOR(ES)
DATA DE PUBLICAÇÃO

2009

RESUMO

The Cock-of-the-rock (Rupicola rupicola, Linnaeus 1766) is endemic to rock outcrops. In Brazilian state of Amazonas, it occurs in the vicinity of the town of Presidente Figueiredo, where its considered a local symbol. This study modeled the probable geographic distribution of the species and characterized patterns of habitat use throughout one year in the Maroaga Environmental Protection Area and areas nearby, aiming the definition of prioritary areas for its conservation. Two models of probable distribution were generated using DesktopGARP software, one in regional geographic scale, the other one in a local geographic scale. The variables used in the modeling process were selected using the Jackkinfe test, embedded in Maxent software. The first model was built using georreferenced presence points of the species obtained from zoological collections databases, using only climatic variables, and it confirmed the known distribution for the Cook-of-the-rock. This model confimed the known distribution of the species and served as a mask for building climatic, topographic and vegetation indexes charts, willing to exclude from the database all those areas with low occurrence probabilities and allowed the building of the local scale model. The local scale model used the specie`s occurence points in the study area, and the environmental variables overlayed with the mask of the regional scale and indicated habitat used for both foraging and breeding. We identified 6 prioritary areas for conservation of the Cook-of-the-rock based on the specie`s highest occurrence probabilities and 5 km away from any urban area and highways, considered as the less anthropic presure area. The Cook-of-the-rock (Rupicola rupicola, Linnaeus 1766) is an endemic species from forests presenting rock outcrops. In the Amazonas state it occurs near the capital Manaus, in the municipality of Presidente Figueiredo, where it is considered a symbol. Due to a unique morphological and behavioral combination, the Cook-of-therock became a focus from wild life traders, and therefore suffers with the city development and the continuous visitation of nesting areas. This study aimed to estimate the occupancy and detection probabilities, population size and density of cook-of-the-rocks in the APA Maroaga and vicinity, in order to to infer about the species conservation status in the focal area. Results indicate that the Cook-of-the-rock occupy mainly Campinarana forests, present a low detection rate (up to 20%) even under conditions favoring its detection, such as sunny days and crescent moon phase, or if within breeding areas (5.5%). Estimates of population size indicated that 77.915 individuals are present in the region, with a density of 354 indiv/km2, so it can`t be included in any cathegory of IUCN`s list of threatened species, but it stands out the need of monitoring and correct handling of protected area for the species not become vulnerable as a consequence of wildlife trade. With these results it should be possible to establish criteria for the conservation of the species.

ASSUNTO(S)

rupicola rupicola distribuição geográfica amazônia ecologia galo-da- serra ecologia preservação e conservação

ACESSO AO ARTIGO

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