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Responses of phytoplankton community to eutrophication in Semerak Lagoon (Malaysia).
Environ Sci Pollut Res Int ; 25(23): 22944-22962, 2018 Aug.
Artigo em Inglês | MEDLINE | ID: mdl-29858995
ABSTRACT
Effects of aquaculture activities on the environmental parameters and phytoplankton community structure were investigated in a semi-enclosed lagoon located at Semerak River, Malaysia. Elevated concentrations of phosphate and ammonia were observed at the aquaculture area and the inner lagoon. Relatively low dissolved oxygen, high total chlorophyll a, and high phytoplankton abundances but low species richness were recorded. Chaetoceros, Pseudo-nitzschia brasiliana, Blixaea quinquecornis, and Skeletonema blooms were observed, and some were associated with anoxia condition. Eutrophication level assessed by UNTRIX suggests that the water quality in the lagoon is deteriorating. Dissolved inorganic phosphorus and nitrogen at the impacted area were 15 and 12 times higher than the reference sites, respectively. Such trophic status indices could provide a useful guideline for optimal aquaculture management plan to reduce the environmental impact caused by aquaculture.
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Texto completo: Disponível Coleções: Bases de dados internacionais Base de dados: MEDLINE Assunto principal: Fitoplâncton / Qualidade da Água / Aquicultura / Eutrofização País/Região como assunto: Ásia Idioma: Inglês Revista: Environ Sci Pollut Res Int Assunto da revista: Saúde Ambiental / Toxicologia Ano de publicação: 2018 Tipo de documento: Artigo País de afiliação: Malásia