Assessment effects of cage culture on nitrogen and phosphorus dynamics in relation to fallowing in a shallow lake in China

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	Assessment effects of cage culture on nitrogen and phosphorus dynamics in relation to fallowing in a shallow lake in China
	Guo, Longgen; Li, Zhongjie; Xie, Ping; Ni, Leyi
刊名	AQUACULTURE INTERNATIONAL
	2009-06-01
卷号	17 期号:3 页码:229-241
关键词	Cage fish farm Nitrogen and phosphorous loading Dynamic Fallowing Lake eutrophication
ISSN号	0967-6120
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
中文摘要	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.
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.
学科主题	Fisheries
WOS标题词	Science & Technology ; Life Sciences & Biomedicine
类目[WOS]	Fisheries
研究领域[WOS]	Fisheries
关键词[WOS]	ORGANIC ENRICHMENT ; ENVIRONMENTAL IMPACTS ; FISH FARM ; AQUACULTURE ; SEDIMENTS ; SALMON ; MANAGEMENT ; RECOVERY ; NORWAY ; WASTE
收录类别	SCI
资助信息	Key Lab of Freshwater Fish Germplasm and Biotechnology ; Ministry of Agriculture [LFB20070602]
语种	英语
WOS记录号	WOS:000266337200003
公开日期	2010-10-13
内容类型	期刊论文
源URL	[http://ir.ihb.ac.cn/handle/152342/7732]
专题	水生生物研究所_中科院水生所知识产出（2009年前）_期刊论文
作者单位	Chinese Acad Sci, Inst Hydrobiol, State Key Lab Freshwater Ecol & Biotechnol China, Donghu Expt Stn Lake Ecosyst, Wuhan 430072, Peoples R China
推荐引用方式 GB/T 7714	Guo, Longgen,Li, Zhongjie,Xie, Ping,et al. Assessment effects of cage culture on nitrogen and phosphorus dynamics in relation to fallowing in a shallow lake in China[J]. AQUACULTURE INTERNATIONAL,2009,17(3):229-241.
APA	Guo, Longgen,Li, Zhongjie,Xie, Ping,&Ni, Leyi.(2009).Assessment effects of cage culture on nitrogen and phosphorus dynamics in relation to fallowing in a shallow lake in China.AQUACULTURE INTERNATIONAL,17(3),229-241.
MLA	Guo, Longgen,et al."Assessment effects of cage culture on nitrogen and phosphorus dynamics in relation to fallowing in a shallow lake in China".AQUACULTURE INTERNATIONAL 17.3(2009):229-241.