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Balneabilidade das praias do litoral de Salvador (Bahia): investigação da interferência da precipitação nas densidades de Escherichia coli

Authors: Luciano da Silva Alves; Bruno Bastos Nazar Machado; Diego Ferreira de Oliveira;

Balneabilidade das praias do litoral de Salvador (Bahia): investigação da interferência da precipitação nas densidades de Escherichia coli

Abstract

Diante da insuficiência dos serviços de saneamento básico no litoral de Salvador-BA, acredita-se que a incidência de chuvas tenha contribuído com a degradação da qualidade da água para fins de balneabilidade. Nesse sentido esta pesquisa tem como objetivo, investigar a influência da precipitação nas densidades de E.coli das praias localizadas no litoral de Salvador-BA. Para tanto foram utilizados os dados de monitoramento pluviométrico e da balneabilidade disponibilizados pelo Instituto do Meio Ambiente e Recursos Hídricos do Estado da Bahia (INEMA), referentes ao ano de 2017 e 2018. Para avaliar a dependência das variáveis, foi aplicado o Coeficiente de Correlação Linear de Pearson (r). Os resultados apontaram influência da precipitação nas densidades de E.coli de 17 praias. No ano de 2017 a maior correlação (r=0.58) foi obtida com o precipitado um dia antes da data da coleta na estação do Cabula com os níveis de E.coli da praia de Amaralina - AM 100. Com r = 0.67, no ano de 2018, as maiores correlações foram obtidas com o registrado na estação do Cabula dois dias antes da coleta com as densidades de E.coli das praias de Armação- AR 200 e Rio Vermelho - RV 100. De modo geral as correlações estiveram variando na faixa moderada. Foi possível concluir que embora exista influência da precipitação na dinâmica de E.coli, o aporte de bactérias está associado a múltiplos fatores decorrentes do ambiente.

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Keywords

Environmental sciences, GE1-350, Environmental technology. Sanitary engineering, TD1-1066, pluviometria, monitoramento, balneabilidade

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popularity
This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
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This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
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