Marine ecosystems are naturally rich habitats. Seabirds are part of these environments and their distribution and abundance can be influenced by...
Marine ecosystems are naturally rich habitats. Seabirds are part of these environments and their distribution and abundance can be influenced by human activity on the coast, as well as intrinsic factors of each species.
The objective of this study was to assess the abundance of seabirds in Ilha Comprida, São Paulo. Eight points were chosen and, for one hour, data on the number and species of seabirds were gathered. Studies in this area are scarce, despite the ecological importance of these animals, especially concerning balance in the food web.
A total of 1,094 seabirds were observed grouping all the observation points. The Sternidae family was the most abundant (39.67%), followed by Eudocimus ruber from the Threskiornithidae family (13.98%), the Fregatidae family (11.88%) and the Cathartidae family (8.77%). Species from the Ardeidae, Phalacrocoracidae and Sulidae were also considerable in the observations.
The results show the importance of this habitat for seabirds, especially considering the great abundance of the endangered E. ruber. However, the Cathartidae family may indicate high levels of human interference in the environment.
Considering that coastal areas are highly populated, the conservation of seabird communities depends on continuous conservation actions, including monitoring studies.