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"evaluation of the environmental quality of the estuarine system of Santos, São Vicente and Bertioga, southern coast of the State of São Paulo: a multiproxy study" - (AQUASAN)

Grant number: 19/13833-7
Support type:Regular Research Grants
Duration: March 01, 2020 - February 28, 2022
Field of knowledge:Physical Sciences and Mathematics - Oceanography - Geological Oceanography
Principal Investigator:Silvia Helena de Mello e Sousa
Grantee:Silvia Helena de Mello e Sousa
Home Institution: Instituto Oceanográfico (IO). Universidade de São Paulo (USP). São Paulo , SP, Brazil
Assoc. researchers:Carla van der Haagen Custodio Bonetti ; Eduardo Siegle ; Emmanuelle GESLIN ; Keila Modesto Tramonte ; Márcia Caruso Bícego ; Maria Virgínia Alves Martins ; Michel Michaelovitch de Mahiques ; Renata Hanae Nagai ; Rubens Cesar Lopes Figueira ; Vivian Helena Pellizari

Abstract

The present project aims to evaluate the environmental quality of the Santos, São Vicente and Bertioga estuarine system, which despite having undergone an environmental recovery program, still presents high contamination rates. The system is also submitted to natural impacts, such as the escape of methane gas. The proposal will consist of a multiproxies study, with sedimentological, geochemical (composition of organic matter, metals and semi metals, sequential chemical extraction, and stable isotopes in foraminifera), meiofauna (benthic foraminifera) analyzes. These analyzes will be applied on surface and core sediments, enabling to identify reference conditions in situ and distinguish the pre-impacted and impacted stages. Environmental DNA (eDNA) metabarcoding analysis will be also applied on superficial sediments, facilitating to obtain diversity data of the foraminifera community. The data generated in the work will be of great assistance in the establishment of strategies of biomonitoring and environmental management of the tropical/subtropical estuarine systems, that can be used in public regulatory companies. (AU)