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Abstract
Species composition, abundance and spatial distribution of benthic macrofauna were analysed on a flat in Ratones Cove, Santa Catarina Island (SC, Brasil). Sampling was carried out at five tidal levels established along a 120 m transect: N1 and N2 – non-vegetated tidal flat, N3 and N4 – mono-specific Spartina alterniflora marsh and N5 – mangrove. The samples were delimeted wint a corer 0.017 m² in area, to a depth of 10 cm, winth random replicates. Fine sands predominated on the flat, with high silt-clay fractions (11%-47%). A progressive increase, water and organic matter content, against a pH and salinity decrease, was observed towards the N5 level, with low macro-fauna richness and abundance. Polychaete worms were the most conspicuous taxon, followed by mollusks and crustaceans. Evidence of the crab Eurytium limosum in the mangrove, Nereis oligohalina, Nertina virginea, Lucina pectinata and Crassostrea sp. In the salt marsh, and Scoloplos sp., Glycinde multidens, Polydora sp. And Anomalocardia brasiliana on the tidal flat.
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Copyright (c) 2003 Guisla Boehs, Arno Blankensteyn, Rachel Costa Sobry, Fernanda Guimarães de Carvalho, José Antonio Santos Domingos, José Waldecir de Carvalho Filho
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