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题名: Biomanipulation in mesocosms using silver carp in two Chinese lakes with distinct trophic states
作者: Yi, Chunlong1; Guo, Longgen1; Ni, Leyi1; Yin, Chengjie1; Wan, Jing2; Yuan, Changbo3
关键词: Silver carp ; Nutrient cycling ; Algal bloom ; Lake Taihu ; Lake Erhai
刊名: AQUACULTURE
发表日期: 2016-02-01
DOI: 10.1016/j.aquaculture.2015.11.002
卷: 452, 期:*, 页:233-238
收录类别: SCI
文章类型: Article
WOS标题词: Science & Technology ; Life Sciences & Biomedicine
类目[WOS]: Fisheries ; Marine & Freshwater Biology
研究领域[WOS]: Fisheries ; Marine & Freshwater Biology
英文摘要: Artificial enhancement of lakes using filter-feeding silver carp is a technique that is widely used to manipulate and/or promote fisheries' production in Chinese lakes. To evaluate the impact of this enhancement on nutrient cycling in the water column, we analyzed two silver carp biomass gradient testing sites by stocking experimental enclosures within Lake Taihu (eutrophic) with 0, 35, 70 and 150 g m(-3) of silver carp biomass and those within Lake Erhai (mesotrophic) with 0, 20, 50 and 100 g m(-3) of silver carp biomass. Total phosphorus and dissolved nitrogen were obviously influenced by the fish density. At relatively low densities, the silver carp were able to graze for particles of food directly, resulting in a decline in phosphorus and chlorophyll-a levels within the Lake Taihu enclosures. When fish were introduced to the Lake Erhai enclosures, chlorophyll-a levels increased. Increased dissolved nitrogen levels were recorded in the Lake Taihu enclosures during the experiment, while the enhanced uptake of nutrients by increased algae resulted in decreased dissolved nitrogen levels in the Lake Erhai enclosures. We hypothesize that although silver carp could potentially reduce cyanobacteria in water bodies with large algal blooms, the relatively small change in fish in Lake Taihu is still too minor to control severe algal blooms. In relatively clean water bodies such as Lake Erhai, artificial ecological enhancement using silver carp should be evaluated carefully before action is taken in order to assess the risk of increasing small algal blooms and nutrients. (C) 2015 Elsevier B.V. All rights reserved.
关键词[WOS]: FILTER-FEEDING FISH ; HYPOPHTHALMICHTHYS-MOLITRIX ; ENCLOSURE EXPERIMENT ; TROPICAL RESERVOIR ; ZOOPLANKTON ; ECOSYSTEMS ; PHYTOPLANKTON ; STOCKING ; TAIHU ; EUTROPHICATION
语种: 英语
项目资助者: National Water Pollution Control and Management Technology Major Projects(2012ZX07105-004 ; 2012ZX07101-002)
WOS记录号: WOS:000366205900030
ISSN号: 0044-8486
Citation statistics:
内容类型: 期刊论文
URI标识: http://ir.ihb.ac.cn/handle/342005/27453
Appears in Collections:淡水生态学研究中心_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, Hubei Province, Peoples R China
2.Yangtze Univ, Coll Anim Sci, Jingzhou 434025, Peoples R China
3.Yangtze Univ, Coll Hort & Garden, Jingzhou 434025, Peoples R China

Recommended Citation:
Yi, Chunlong,Guo, Longgen,Ni, Leyi,et al. Biomanipulation in mesocosms using silver carp in two Chinese lakes with distinct trophic states[J]. AQUACULTURE,2016,452(*):233-238.
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