Natural factors and chemical contamination control the structure of macrobenthic communities in the Santos Estuarine System (SP, Brazil)

Autor(es):Mostrar menos -

Abessa, D. M. S. ^{[1, 2]} ; Rachid, B. R. F. ^{[1, 3]} ; Zaroni, L. P. ^[1] ; Gasparro, M. R. ^[1] ; Pinto, Y. A. ^[1] ; Bicego, M. C. ^[1] ; Hortellan, M. A. ^[4] ; Sarkis, J. E. S. ^[4] ; Muniz, P. ^[5] ; Moreira, L. B. ^[2] ; Sousa, E. C. P. M. ^[1]

Afiliação do(s) autor(es)

^[1] Univ Sao Paulo, Inst Oceanog, Praca Oceanog 191, BR-05508900 Sao Paulo, SP - Brazil

^[2] UNESP, Campus Litoral Paulista, BR-11330900 Sao Ticente, SP - Brazil

^[3] BR Ambiental, Rua Corinto, 739, Sala 91-A, BR-05586069 Sao Paulo, SP - Brazil

^[4] Inst Pesquisas Energet Nucl, Av Prof Lineu Prestes 2242, BR-05508900 Sao Paulo, SP - Brazil

^[5] Fac Ciencias UdelaR, Secc Oceanol, Igua 4225, Montevideo 11400 - Uruguay

• Tipo de documento: Artigo Científico
• Fonte: COMMUNITY ECOLOGY; v. 20, n. 2, p. 121-137, AUG 2019.
• Citações Web of Science: 1

Resumo

The Santos Estuarine System (SES) is a complex of bays, islands, estuarine channels, and rivers located on the Southeast coast of Brazil, in which multiple contaminant sources are situated in close proximity to mangroves and other protected areas. In this study, the composition and structure of the macrobenthic communities of SES were described and ninety-nine species were identified, with the predominance of polychaetes and bivalve mollusks. The benthic assemblages also showed strong signs of stress, as indicated by the low abundance, richness and diversity, and the dominance of opportunistic species. Integrated analysis including sediment characteristics related to natural and anthropogenic factors (e.g., sediment chemistry, and toxicity) indicated that benthic fauna from the inner portions of the SES and vicinities of the SSOS diffusers as Santos Bay were affected. Some locations at the mouths of Santos and Sao Vicente estuaries exhibited moderate disturbance. In other sites from the mouth of Sao Vicente and Bertioga channels, and Santos Bay, the benthic fauna were considered not degraded. Our results suggest that a combination of both environmental factors and contaminants were responsible for the benthic community structure. (AU)

• Processo FAPESP: 13/15482-0 - Estabelecimento de valores de referência sítio-específicos para concentrações de contaminantes em sedimentos do litoral do Estado de São Paulo: bases científicas para a criação de uma legislação no âmbito nacional
• Beneficiário: Lucas Buruaem Moreira
• Modalidade de apoio: Bolsas no Brasil - Pós-Doutorado
• Processo FAPESP: 98/00808-6 - Avaliação ecotoxicológica da qualidade dos sedimentos da região estuarina de Santos-SP, Brasil, utilizando os métodos da tríade da qualidade de sedimentos e testes de toxicidade
• Beneficiário: Denis Moledo de Souza Abessa
• Modalidade de apoio: Bolsas no Brasil - Doutorado