Status conservacionista da mastofauna em fragmentos de Mata AtlÃntica Nordestina / Conservationist status of mammalls on atlantic forest fragments of brazilian northeastern

AUTOR(ES)

Antonio Paulo da Silva JÃnior

DATA DE PUBLICAÇÃO

2007

RESUMO

The aim of this study was to sample the medium and large sized mammalian fauna of the RPPN Frei Caneca and the surrounding area, comparing its abundance and diversity amongst four fragments of different sizes. The sample followed the Line Transect Method, when trails measuring between 1,3 and 2 km were established (depending on the size and shape of the fragment), 1 m wide, which were sampled at a speed of 1 km/h, from December 2005 to November 2006. Diurnal and nocturnal surveys were carried out through the same sample effort, and the diurnal started from dawn, at 04:30 till 10:30 h, and the nocturnal, from 16:30 till 22:30 h. In order to build a checklist of the species present in the area we used interviews with locals, footprints, vocalizations, carcasses, and fur which were registered. Densities were analyzed through the âsighting ratesâ method. The checklist of the species registered was compared with another list of species expected to occur in the CEPE. 18 species were registered in a total of 52 sightings, where the most abundant were: Callithrix jacchus, Guerlinguetus alphonsei, Nasua nasua and Dasyprocta aguti. There was no significant difference in the number of sightings between the fragments, between dry and wet season, or diurnal, nocturnal and cathemeral. A total of 23 species were encountered. Six species were encountered in open areas away from the study trails. The predominant guilds were frugi-omnivores and frugi-granivores. The structure of the fragments and the surrounding matrix allow the species to move amongst the fragments, homogenizing species richness, and suggesting a metapopulation model

ASSUNTO(S)

comunidade de mamÃferos mata atlÃntica modelo de metapopulaÃÃo metapopulation model pernambuco endemism centre atlantic forest surveys centro de endemismo pernambuco zoologia mammal community

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