Distribuição Espacial e Temporal do Macrozoobentos de Habitats Entremarés do Canal da Raposa, Baía de São Marcos, Maranhão, Brasil

• Ano de defesa: 2017
• Autor(a) principal: COSTA, Clarissa Moreira Coelho
• Orientador(a): RODRIGUES, Antonio Augusto Ferreira
• Tipo de documento: Dissertação
• Tipo de acesso: Acesso aberto
• Idioma: por
• Instituição de defesa: Universidade Federal do Maranhão
• Programa de Pós-Graduação: PROGRAMA DE PÓS-GRADUAÇÃO EM BIODIVERSIDADE CONSERVAÇÃO/CCBS
• Departamento: DEPARTAMENTO DE BIOLOGIA/CCBS
• País: Brasil
• Palavras-chave em Português: Macrobentos; Planícies de maré tropicais; Distribuição; Tropical tideplains; Distribution.
• Palavras-chave em Inglês: Macrobentos;
• Área do conhecimento CNPq: Oceanografia Biológica
• Link de acesso: http://tedebc.ufma.br:8080/jspui/handle/tede/1868

Macrozoobenthos of different grain size intertidal habitats were sampled during wet and dry seasons on Raposa Channel, Maranhão State, Brazil. The sampling was made with a PVC corer. The benthic organisms was sieved using 1 and 0,5 mm sieves and identified under a stereoscopic microscope. There were a few dominant species despite of many rare ones. Paraonis agilis, Notomastus aberans, Capitella capitata and Odontosyllis heterofalchaeta had high densities on Raposa Channel habitats. The macrozoobenthos had higher densities during wet season, specially the deposit and suspension feeders. The deposit feeders were dominant at higher silt/clay content habitats, while the suspension feeders dominated higher sand content ones. These habitats were the most diverse. Ceratia rustica, Vitrinella filifera, Paraonis agilis, Scaphopoda indet. and Caecum sp had high contribution on dissimilarity between habitats, most expressive during dry season. Sediment humidity, organic mater content, sand, silt and clay percentages and grain selection showed that habitats were significantly differents.