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学科主题: Fisheries
题名: Assessment effects of cage culture on nitrogen and phosphorus dynamics in relation to fallowing in a shallow lake in China
作者: Guo, Longgen1; Li, Zhongjie1; Xie, Ping1; Ni, Leyi1
通讯作者: Guo, LG, Chinese Acad Sci, Inst Hydrobiol, State Key Lab Freshwater Ecol & Biotechnol China, Donghu Expt Stn Lake Ecosyst, Wuhan 430072, Peoples R China
关键词: Cage fish farm ; Nitrogen and phosphorous loading ; Dynamic ; Fallowing ; Lake eutrophication
刊名: AQUACULTURE INTERNATIONAL
发表日期: 2009-06-01
DOI: 10.1007/s10499-008-9195-5
卷: 17, 期:3, 页:229-241
收录类别: SCI
文章类型: Article
部门归属: [Guo, Longgen; Li, Zhongjie; Xie, Ping; Ni, Leyi] Chinese Acad Sci, Inst Hydrobiol, State Key Lab Freshwater Ecol & Biotechnol China, Donghu Expt Stn Lake Ecosyst, Wuhan 430072, Peoples R China
WOS标题词: Science & Technology ; Life Sciences & Biomedicine
资助者: Key Lab of Freshwater Fish Germplasm and Biotechnology ; Ministry of Agriculture [LFB20070602]
类目[WOS]: Fisheries
研究领域[WOS]: Fisheries
摘要: Nitrogen and phosphorus dynamics in relation to fallowing in a fish cage farm was investigated in a shallow lake in China. Four sampling sites were set: beneath the cages, at the cage sides, and 50 and 100 m east of the cage farm. Total nitrogen (TN) and total phosphorus (TP) in lake water and sediment were analyzed during a 2-year rearing cycle. The cage culture had a fish yield of 16.3-39.2 tonnes in the study period. Based on the mass balance equation, 1533-3084 kg TN and 339-697 kg TP were contributed to the lake environment. Nitrogen and phosphorous concentrations showed greater increase in the first culture period than in the second rearing cycle. No obvious changes were found at the sampling sites 50 and 100 m east of the cages during the study periods. Main impacts were found close to the cages (beneath the cages and at the cage side); the sampling points at the cage side showed relatively high TN and TP sedimentation. After 3 months of fallowing, water TN and TP decreased significantly but the sediment TN and TP contents remained high. Therefore, recovery seems to happen during fallowing but attention should be paid to whether the culture continues to operate in the future.
英文摘要: Nitrogen and phosphorus dynamics in relation to fallowing in a fish cage farm was investigated in a shallow lake in China. Four sampling sites were set: beneath the cages, at the cage sides, and 50 and 100 m east of the cage farm. Total nitrogen (TN) and total phosphorus (TP) in lake water and sediment were analyzed during a 2-year rearing cycle. The cage culture had a fish yield of 16.3-39.2 tonnes in the study period. Based on the mass balance equation, 1533-3084 kg TN and 339-697 kg TP were contributed to the lake environment. Nitrogen and phosphorous concentrations showed greater increase in the first culture period than in the second rearing cycle. No obvious changes were found at the sampling sites 50 and 100 m east of the cages during the study periods. Main impacts were found close to the cages (beneath the cages and at the cage side); the sampling points at the cage side showed relatively high TN and TP sedimentation. After 3 months of fallowing, water TN and TP decreased significantly but the sediment TN and TP contents remained high. Therefore, recovery seems to happen during fallowing but attention should be paid to whether the culture continues to operate in the future.
关键词[WOS]: ORGANIC ENRICHMENT ; ENVIRONMENTAL IMPACTS ; FISH FARM ; AQUACULTURE ; SEDIMENTS ; SALMON ; MANAGEMENT ; RECOVERY ; NORWAY ; WASTE
语种: 英语
WOS记录号: WOS:000266337200003
ISSN号: 0967-6120
Citation statistics:
内容类型: 期刊论文
URI标识: http://ir.ihb.ac.cn/handle/152342/7732
Appears in Collections:中科院水生所知识产出(2009年前)_期刊论文

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作者单位: 1.Chinese Acad Sci, Inst Hydrobiol, State Key Lab Freshwater Ecol & Biotechnol China, Donghu Expt Stn Lake Ecosyst, Wuhan 430072, Peoples R China

Recommended Citation:
Guo, Longgen; Li, Zhongjie; Xie, Ping; Ni, Leyi.Assessment effects of cage culture on nitrogen and phosphorus dynamics in relation to fallowing in a shallow lake in China,AQUACULTURE INTERNATIONAL,2009,17(3):229-241
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