Response and environmental assessment of two Chinese conventional carps to water quality regulation in recirculating aquaculture
文献类型： 外文期刊
作者： Zhang, Shiyang 1 ; Li, Meng 2 ; Cheng, Jing 2 ; Xu, Zhouying 2 ; Chen, Jianming 1 ;
作者机构： 1.Zhejiang Inst Freshwater Fisheries, Key Lab Fish Hlth & Nutr Zhejiang Prov, Minist Agr, Key Lab Hlth Freshwater Aquaculture, Huzhou 313001, Peoples R China
2.Wuhan Univ Technol, Sch Civil Engn & Architecture, Wuhan 430070, Peoples R China
3.Chinese Acad Fishery Sci, Yangtze River Fisheries Res Inst, Minist Agr China, Key Lab Freshwater Biodivers Conservat, Wuhan 430223, Peoples R China
关键词： Constructed wetland; Purifying capacity; Water quality; Trophic status; Integrated culture system
期刊名称：AQUACULTURAL ENGINEERING （ 影响因子：3.281； 五年影响因子：3.727 ）
ISSN： 0144-8609
年卷期： 2016 年 74 卷
页码：
收录情况： SCI
摘要： In this study, a ditch-type of a four-stage hybrid constructed wetlands (CWs) was integrated into a group of series-connected ponds that form a recirculating aquaculture system, which was used to rear silver crucian carp (Carassius auratus gibelio) and grass carp (Ctenopharyngodon idellus). The results indicated that the hybrid system operated at a mean hydraulic loading rate (HLR) of 0.727 m(3)/(m(2) d) and had a notable purifying capacity, which resulted in a significantly lowered trophic status of the recirculating ponds compared to the control. Both the grass carp and crucian carp yield were negatively correlated to water quality parameters, implying that both species might prefer to live in a less eutrophic system. Although the value of the increased product yield had nearly been offset by construction and system operation costs, this integrated culture system used no fish pharmaceuticals and fewer freshwater resources. Hence, the integrated culture system was a more environmental friendly production method compared to the traditional methods. (C) 2016 Elsevier B.V. All rights reserved.
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