Responses of phytoplankton community to eutrophication in Semerak Lagoon (Malaysia)
Document Type
Article
Publication Date
1-1-2018
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.
Keywords
Algal blooms, Diatoms, Dinoflagellates, Eutrophication, Phytoplankton, UNTRIX
Divisions
ocean
Funders
Malaysian government through the Ministry of Higher Education HICoE fund [IOES-2014C],NANO-POGO: for providing seed fund,JSPS Core-to-Core Program,Ministry of Education Mybrain Scholarship
Publication Title
Environmental Science and Pollution Research
Volume
25
Issue
23
Publisher
Springer Verlag (Germany)
Publisher Location
185 BERRY ST, STE 1300, SAN FRANCISCO, CA 94107 USA