Composição da avifauna e sua relação com áreas manejadas na restinga da Reserva Imbassaí, Litoral Norte da Bahia, Brasil
Avian composition and their relationship with environmental management areas in restinga at the Reserva Imbassaí, Bahia North Coast, Brazil. The Restinga avifauna is strongly influenced by the surrounding biomes and ecosystems. However, and according to literature, it also shows low richness and endemism rates. This ecosystem is the actual stage for severe habitat change and growing historical human disturbance, and all of those impacts represent the main threats to a poorly known avifauna, especially on the Northeast of Brazil. The use of mitigation action to reduce the impacts over the natural environments represents an important tool in these issues. This study’s main objective was to promote the avifauna inventory on the Reserva Imbassai, in association to its relationship with environmental managed landscapes actions arguing the effectiveness of restoration techniques and their potential to the avifauna conservation within the region. The Reserva Imbassai is located at the Environmental Protection Area of the Litoral Norte, and it is located at the municipality of Mata de São João, distant 65 km from the capital city Salvador. Six survey occasions were taken from November 2008 and May 2009, where mist nets and audio sampling point’s techniques were taken on all present vegetation type habitats, including an ecological corridor within the area and the restoration areas. We recorded 96 bird species, from which 56 used the ecological corridor and 57 used the restoration areas. However, 26 were registered to the managed areas and 16 to the naturally preserved habitats, such as the ecological corridor. The managed landscapes were efficient for the avian fauna maintenance; however, the bush translocation technique showed the highest efficience when compared to the artificial poles technique. The Reserva Imbassai, showed an important birds’ richness, enhancing its value to the regional restinga’s avifauna conservation. The managed landscapes proved to be an important mitigation resource for both the remnants maintenance and the avian protection and should strictly be analysed prior to its implementation in order to obtain its effective outcomes.
birds; ecological corridor; PRAD; aves; corredor ecológico
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