Macozoobenthic community structure in the region influenced by Almirante Barroso Terminal (TEBAR) in the São Sebastião Channel (SP, Brasil) / Estrutura da comunidade macrozoobentônica na região de influência do Terminal Almirante Barroso (TEBAR) no Canal de São Sebastião (SP, Brasil)

AUTOR(ES)
DATA DE PUBLICAÇÃO

2007

RESUMO

A study of benthic macrofauna was carried out along the São Sebastião Channel (SSC) during summer and winter of 2005. Sediment samples were undertaken (van Veen grab 0.03 m2) to chemical and biological analysis, in an area influenced by anthropogenic activities. The stations nearby the Terminal Almirante Barroso (TEBAR) oil terminal, Araçá sewage system and São Sebastião harbor showed the highest concentrations of organic matter, metals and hydrocarbons. The sediment distribution was very complex and heterogeneous, with a northward grain size increasing. The organisms collected presented correlation to the SSC sedimentary characteristics. The north stations, a high energy system, were characterized by a coarse grain size bottom and carnivorous motile species, which reflected highest abundance, richness and diversity values. The center-north stations were muddy-sand bottom and omnivorous species were observed there. The center-south stations, which are influenced by a low hydrodynamic energy, were predominated by a muddy bottom, leading to a high retention of organic and inorganic compounds. In these stations were found opportunistic deposit feeders species resulting in low abundance, richness and diversity. The sedimentary pattern (i.e. grain size) as well as their characteristics (adsortion capacity) seems to determine the macrozoobenthic community pattern in SSC.

ASSUNTO(S)

macrofauna marine pollution macrofauna poluição marinha são sebastião channel canal de são sebastião

ACESSO AO ARTIGO

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