Assessing the sediment quality of the Laje de Santos marine state park and other marine protected areas of the central coast of São Paulo (Brazil)

Author(s):Show less -

Abessa, Denis ^[1] ; Vicente, Thaisa Marques ^[2] ; Moreira, Lucas Buruaem ^[1] ; Morais, Lucas Goncalves ^[3] ; Feitosa Cruz, Ana Carolina ^[1] ; Massonetto, Mirella ^[1] ; de Campos, Bruno Galvao ^[1] ; Bicego, Marcia Caruso ^[4] ; Taniguchi, Satie ^[4] ; Hortellani, Marcos Antonio ^[5] ; de Souza Sarkis, Jorge Eduardo ^[5]

Affiliation

^[1] Univ Estadual Paulista, Praca Infante Dom Henrique S-N, BR-11330900 Sao Vicente, SP - Brazil

^[2] Fundacao Estudos & Pesquisas Aquat, Av Afranio Peixoto 412, BR-05507000 Sao Paulo, SP - Brazil

^[3] Univ Fed Sao Paulo, Inst Mar, Rua Silva Jardim 136, BR-11015020 Santos, SP - Brazil

^[4] Univ Sao Paulo, Inst Oceanog, Praca Oceanog 191, BR-05508120 Sao Paulo, SP - Brazil

^[5] Inst Pesquisas Energet & Nucl, Ave Lineu Prestes 2242, BR-05508900 Sao Paulo, SP - Brazil

• Document type: Journal article
• Source: Brazilian Journal of Oceanography; v. 65, n. 4, p. 532-548, OCT-DEC 2017.
• Web of Science Citations: 3

Abstract

Abstract In this study, the quality of sediments from three Marine Protected Areas (MPAs) located on the coast of São Paulo (Laje de Santos Marine State Park - PEMLS; Xixova-Japui State Park - XJSP; and Central Coast Marine Protection Area - APAMLC) was assessed. Four sampling surveys were conducted (September/October 2013; January 2014; July 2014; January 2015). Sediment samples were collected at10 sites, distributed along the 3 MPAs. Samples were analyzed for sediment texture, total organic carbon, CaCO3, metals, aliphatic and polycyclic aromatic hydrocarbons, and for whole-sediment and sediment-water interface toxicities. Principal component analysis (PCA) was used to integrate data. Most of the sediments exhibited low concentrations of chemicals, with the exception of those from P2 (APAMLC) where moderate levels of contaminants were detected. Sediments from P7 and P9 (PEMLS) occasionally showed signs of petroleum hydrocarbons. The other sediments showed no relevant contamination but presented variable toxicity, especially those of bioclastic composition. The PCA indicated a contribution of the sediment properties to the toxicities, especially the CaCO3. In bioclastic sediments, toxicity might be due to physical causes by or any indirect factor such as the presence of ammonia. It was concluded that both natural and anthropic factors are causing toxicity in sediments from the MPAs studied. (AU)

• FAPESP's process: 13/15482-0 - Establishment of site-specific sediment quality guidelines for the Coast of São Paulo state: scientific basis for the creation of a national legislation
• Grantee: Lucas Buruaem Moreira
• Support Opportunities: Scholarships in Brazil - Post-Doctoral