Responses of phytoplankton community to eutrophication in Semerak Lagoon (Malaysia)

Er, Huey Hui and Lee, Li Keat and Lim, Zhen Fei and Teng, Sing Tung and Leaw, Chui Pin and Lim, Po Teen (2018) Responses of phytoplankton community to eutrophication in Semerak Lagoon (Malaysia). Environmental Science and Pollution Research, 25 (23). pp. 22944-22962. ISSN 0944-1344

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Official URL: https://doi.org/10.1007/s11356-018-2389-0

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.

Item Type: Article
Uncontrolled Keywords: Algal blooms; Diatoms; Dinoflagellates; Eutrophication; Phytoplankton; UNTRIX
Subjects: Q Science > Q Science (General)
Q Science > QH Natural history
Divisions: Deputy Vice Chancellor (Research & Innovation) Office > Institute of Ocean and Earth Sciences
Depositing User: Mr Faizal 2
Date Deposited: 13 Jan 2015 06:45
Last Modified: 28 Aug 2019 02:16
URI: http://eprints.um.edu.my/id/eprint/11925

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