Living benthic foraminifera of Santos continental shelf, southeastern Brazilian continental margin (SW Atlantic): chlorophyll-a and particulate organic matter approach

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Yamashita, Cintia ; Omachi, Claudia ; Aoki Santarosa, Ana Claudia ; Iwai, Fabiane Sayuri ; Araujo, Beatriz Dias ; Disaro, Sibelle Trevisan ; Alves Martins, Maria Virginia ; Vicente, Thaisa Marques ; Taniguchi, Nancy ; Burones, Leticia ; Mahiques, Michel M. ; Bicegol, Marcia Caruso ; Figueira, Rubens C. L. ; Sousa, Silvia H. M.

• Tipo de documento: Artigo Científico
• Fonte: JOURNAL OF SEDIMENTARY ENVIRONMENTS; v. 5, n. 1, p. 18-pg., 2020-01-30.

Resumo

Living (stained) benthic foraminifera from the continental shelf of Santos Basin, southeastern Brazilian continental margin, were investigated to understand their distribution patterns and their relationship with chlorophyll-a and particulate organic matter contents. Sediments were collected from 44 to 203 m of water depth. This study analysis benthic foraminifera and abiotic data, including grain size, total organic matter, distributions of ocean chlorophyll-a and particulate organic matter. Foraminiferal diversity and richness were positively correlated to the chlorophyll-a and particulate organic carbon contents. Stations located on the southern portion of the study area and sampled during austral winter are probably under the seasonal influence of the Brazilian Coastal Current intrusion, and Rio de la Plata and Lagoa dos Patos plumes. Ammonia rolshauseni, Textularia? sp. and Gyroidina umbonata are present within the foraminifera assemblages at these stations. On the other hand, stations in the north, are characterized by the presence of Uvigerina peregrina, Quinqueloculina atlantica, Hanzawaia concentrica and Bulimina marginata, and they are influence of Cabo Frio's southward-moving plume. (AU)

• Processo FAPESP: 15/17763-2 - Mudbelts do Sul e Sudeste do Brasil: implicações sobre as influências antrópicas no ambiente marinho
• Beneficiário: Márcia Caruso Bícego
• Modalidade de apoio: Auxílio à Pesquisa - Temático
• Processo FAPESP: 10/06147-5 - Incremento da capacidade de pesquisa em oceanografia no estado de São Paulo
• Beneficiário: Michel Michaelovitch de Mahiques
• Modalidade de apoio: Auxílio à Pesquisa - Programa de Pesquisa sobre Mudanças Climáticas Globais - Regular
• Processo FAPESP: 17/00427-5 - Distribuição vertical dos foraminíferos bentônicos vivos dos mud-belts na margem continental sul brasileira: resposta à variação da condição redox e ao aporte de matéria orgânica
• Beneficiário: Cintia Yamashita
• Modalidade de apoio: Bolsas no Brasil - Pós-Doutorado