Análise ecotoxicológica das praias do litoral dos estados de São Paulo e Paraná, no Brasil
Data
2023-07-06
Autores
Rodrigues, Natália Ribeiro 
Orientadores
Cesar, Augusto
Tipo
Trabalho de conclusão de curso
Título da Revista
ISSN da Revista
Título de Volume
Resumo
Os estudos de ecotoxicologia no ambiente marinho possibilitam a avaliação de efeitos tóxicos
relacionados à presença de substâncias químicas no meio ambiente. Esses estudos permitem
que seja feito o acompanhamento de impactos e avaliação de risco relacionados a locais
contaminados e controle de efluentes. Diante disso, foi caracterizada a toxicidade de amostras
de sedimentos das praias dos estados de São Paulo e Paraná. Para tanto, foram coletadas
amostras de água nas praias do Sangava e Itaguaré, no litoral de São Paulo e nas praias do
Paranaguá e Praia de Leste, no Paraná, em parceria com o projeto “Projeto Ondas Limpas na
Estrada” da Sea Shepherd Brasil. Foi utilizado o teste crônico de curta duração empregando
embriões de ouriço-do-mar de acordo com a norma ABNT- NBR 15350/21. Recém fertilizado,
os embriões de Echinometra lucunter coletados em Ilha Das Palmas, Santos/SP, foram
expostos ao tratamento controle (água do mar natural filtrada) e as amostras de sedimentos das
praias do estado de São Paulo e Paraná. Os parâmetros limitantes foram analisados no início e
final do experimento (pH, Temperatura, Salinidade e Oxigênio Dissolvido), e os mesmos foram
mantidos em fotoperíodo de 16h/8h por um período de 42 horas. A análise das amostras das
praias próximas a regiões portuárias revelaram níveis mais elevados de toxicidade em
comparação com as amostras de regiões mais afastadas do porto e áreas menos movimentadas.
Isso indica o impacto negativo das atividades portuárias no ambiente marinho. Esses resultados
destacam a necessidade de medidas de controle ambiental rigorosas nas áreas portuárias para
minimizar a contaminação e proteger os ecossistemas costeiros.
Ecotoxicology studies in the marine environment enable the assessment of toxic effects related to the presence of chemical substances in the environment. These studies allow for monitoring of impacts and risk assessment related to contaminated sites and effluent control. In this regard, the toxicity of sediment samples from beaches in the states of São Paulo and Paraná (Paranaguá and Praia de Leste) was characterized. For this purpose, water samples were collected from Sangava and Itaguaré beaches on the coast of São Paulo, and from Paranaguá and Praia de Leste beaches in Paraná, in partnership with the "Projeto Ondas Limpas na Estrada" by Sea Shepherd Brazil. The short-term chronic test was conducted using sea urchin embryos according to the ABNT-NBR 15350/21 standard. Recently fertilized embryos of Echinometra lucunter collected in Ilha Das Palmas, Santos/SP, were exposed to the control treatment (filtered natural seawater) and sediment samples from the beaches of São Paulo and Paraná. The limiting parameters were analyzed at the beginning and end of the experiment (pH, temperature, salinity, and dissolved oxygen), and they were maintained under a photoperiod of 16h/8h for a period of 42 hours. Analysis of the samples from beaches near port areas revealed higher levels of toxicity compared to samples from regions further away from the port and less populated areas. This indicates the negative impact of port activities on the marine environment. These results highlight the need for rigorous environmental control measures in port areas to minimize contamination and protect coastal ecosystems
Ecotoxicology studies in the marine environment enable the assessment of toxic effects related to the presence of chemical substances in the environment. These studies allow for monitoring of impacts and risk assessment related to contaminated sites and effluent control. In this regard, the toxicity of sediment samples from beaches in the states of São Paulo and Paraná (Paranaguá and Praia de Leste) was characterized. For this purpose, water samples were collected from Sangava and Itaguaré beaches on the coast of São Paulo, and from Paranaguá and Praia de Leste beaches in Paraná, in partnership with the "Projeto Ondas Limpas na Estrada" by Sea Shepherd Brazil. The short-term chronic test was conducted using sea urchin embryos according to the ABNT-NBR 15350/21 standard. Recently fertilized embryos of Echinometra lucunter collected in Ilha Das Palmas, Santos/SP, were exposed to the control treatment (filtered natural seawater) and sediment samples from the beaches of São Paulo and Paraná. The limiting parameters were analyzed at the beginning and end of the experiment (pH, temperature, salinity, and dissolved oxygen), and they were maintained under a photoperiod of 16h/8h for a period of 42 hours. Analysis of the samples from beaches near port areas revealed higher levels of toxicity compared to samples from regions further away from the port and less populated areas. This indicates the negative impact of port activities on the marine environment. These results highlight the need for rigorous environmental control measures in port areas to minimize contamination and protect coastal ecosystems
Descrição
Citação
RODRIGUES, Natália Ribeiro. Análise ecotoxicológica das praias do litoral dos estados de São Paulo e Paraná, no Brasil. 2023. 29 f. Trabalho de conclusão de curso (Graduação em Engenharia Ambiental) - Instituto do Mar, Universidade Federal de São Paulo, Santos, 2023.