Effects of intensive mariculture on the sediment environment as revealed by phytoplankton pigments in a semi-enclosed bay, South China Sea
文献类型： 外文期刊
作者： Jiang, Tao 1 ; Yu, Zonghe 2 ; Qi, Zhanhui 3 ; Chai, Chao 5 ; Qu, Keming 1 ;
作者机构： 1.Chinese Acad Fishery Sci, Yellow Sea Fisheries Res Inst, Key Lab Sustainable Dev Marine Fisheries, Qingdao 266071, Peoples R China
2.Chinese Acad Sci, South China Sea Inst Oceanol, Key Lab Marine Bioresources Sustainable Utilizat, Guangzhou, Guangdong, Peoples R China
3.Minist Agr, Key Lab Exploitat & Utilizat Marine Fisheries Res, Guangzhou, Guangdong, Peoples R China
4.Chinese Acad Fishery Sci, South China Sea Fisheries Res Inst, Guangzhou, Guangdong, Peoples R China
5.Qingdao Agr Univ, Qingdao Engn Res Ctr Rural Environm, Qingdao, Peoples R China
关键词： phytoplankton; pigments; maricul-ture; sediment; Daya Bay; South China Sea
期刊名称：AQUACULTURE RESEARCH （ 影响因子：2.082； 五年影响因子：2.415 ）
ISSN： 1355-557X
年卷期： 2017 年 48 卷 4 期
页码：
收录情况： SCI
摘要： Phytoplankton pigment concentrations in the sur-face sediments of a fish and oyster farm in Dapeng Cove, South China Sea, were measured monthly to investigate the effects of mariculture on the envi-ronment from December 2011 to December 2012. The highest contents of the identified phytopig-ments, sulphides and total organic carbon in the surface sediments were all found at the fish farm, followed by the oyster farm; the lowest contents were detected at the control site. Fucoxanthin in the surface sediments was the most abundant car-otenoid and was significantly correlated with chlorophyll a (Chl a; r = 0.922, P < 0.01). This finding suggested that the deposited diatoms could be the main source of the Chl a concentration. Besides a differential sedimentation of phytoplank-ton (i. e. higher downflux at fish and oyster site than that at control site), we assume that the extent of pigment diminution from the fish site to control site was also controlled by the chemical conditions of the surface sediments. The fish farm provided the most optimum preservation condi-tions for the phytopigments and was a good sink for phytodetritus among the three sites because of its anoxic and reductive characteristics. Phyto-plankton pigments could be useful biomarkers to evaluate the influence of mariculture on sediment environment.
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