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题名: The Impact of Fish Predation and Cyanobacteria on Zooplankton Size Structure in 96 Subtropical Lakes
作者: Zhang, Jing1, 2; Xie, Ping2; Tao, Min2; Guo, Longgen2; Chen, Jun2; Li, Li1; Zhang, XueZhen1; Zhang, Lu3
通讯作者: Xie, P (reprint author), Chinese Acad Sci, Donghu Expt Stn Lake Ecosyst, State Key Lab Freshwater Ecol & Biotechnol China, Inst Hydrobiol, Wuhan, Hubei, Peoples R China.
关键词: CARP HYPOPHTHALMICHTHYS-MOLITRIX ; FOOD-WEB STRUCTURE ; SHALLOW LAKES ; BODY-SIZE ; CRUSTACEAN ZOOPLANKTON ; MICROCYSTIS-AERUGINOSA ; MESOCOSM EXPERIMENT ; EUTROPHIC LAKE ; CHINESE LAKE ; ECOSYSTEM
刊名: PLOS ONE
发表日期: 2013-10-04
DOI: 10.1371/journal.pone.0076378
卷: 8, 期:10, 页:e76378
收录类别: SCI
文章类型: Article
部门归属: [Zhang, Jing ; Li, Li ; Zhang, XueZhen] Huazhong Agr Univ, Coll Fisheries, Wuhan, Hubei, Peoples R China ; [Zhang, Jing ; Xie, Ping ; Tao, Min ; Guo, Longgen ; Chen, Jun] Chinese Acad Sci, Donghu Expt Stn Lake Ecosyst, State Key Lab Freshwater Ecol & Biotechnol China, Inst Hydrobiol, Wuhan, Hubei, Peoples R China ; [Zhang, Lu] Chinese Acad Sci, Nanjing Inst Geog & Limnol, Nanjing, Jiangsu, Peoples R China
WOS标题词: Science & Technology
资助者: Lake water quality, water quantity and biological resources investigation in China [2006FY110600]; National water pollution control and management technology major projects [2012ZX07101-002]
类目[WOS]: Multidisciplinary Sciences
研究领域[WOS]: Science & Technology - Other Topics
摘要: Zooplankton are relatively small in size in the subtropical regions. This characteristic has been attributed to intense predation pressure, high nutrient loading and cyanobacterial biomass. To provide further information on the effect of predation and cyanobacteria on zooplankton size structure, we analyzed data from 96 shallow aquaculture lakes along the Yangtze River. Contrary to former studies, both principal components analysis and multiple regression analysis showed that the mean zooplankton size was positively related to fish yield. The studied lakes were grouped into three types, namely, natural fishing lakes with low nutrient loading (Type1), planktivorous fish-dominated lakes (Type 2), and eutrophic lakes with high cyanobacterial biomass (Type 3). A marked difference in zooplankton size structure was found among these groups. The greatest mean zooplankton size was observed in Type 2 lakes, but zooplankton density was the lowest. Zooplankton abundance was highest in Type 3 lakes and increased with increasing cyanobacterial biomass. Zooplankton mean size was negatively correlated with cyanobacterial biomass. No obvious trends were found in Type 1 lakes. These results were reflected by the normalized biomass size spectrum, which showed a unimodal shape with a peak at medium sizes in Type 2 lakes and a peak at small sizes in Type 3 lakes. These results indicated a relative increase in medium-sized and small-sized species in Types 2 and 3 lakes, respectively. Our results suggested that fish predation might have a negative effect on zooplankton abundance but a positive effect on zooplankton size structure. High cyanobacterial biomass most likely caused a decline in the zooplankton size and encouraged the proliferation of small zooplankton. We suggest that both planktivorous fish and cyanobacteria have substantial effects on the shaping of zooplankton community, particularly in the lakes in the eastern plain along the Yangtze River where aquaculture is widespread and nutrient loading is high.
英文摘要: Zooplankton are relatively small in size in the subtropical regions. This characteristic has been attributed to intense predation pressure, high nutrient loading and cyanobacterial biomass. To provide further information on the effect of predation and cyanobacteria on zooplankton size structure, we analyzed data from 96 shallow aquaculture lakes along the Yangtze River. Contrary to former studies, both principal components analysis and multiple regression analysis showed that the mean zooplankton size was positively related to fish yield. The studied lakes were grouped into three types, namely, natural fishing lakes with low nutrient loading (Type1), planktivorous fish-dominated lakes (Type 2), and eutrophic lakes with high cyanobacterial biomass (Type 3). A marked difference in zooplankton size structure was found among these groups. The greatest mean zooplankton size was observed in Type 2 lakes, but zooplankton density was the lowest. Zooplankton abundance was highest in Type 3 lakes and increased with increasing cyanobacterial biomass. Zooplankton mean size was negatively correlated with cyanobacterial biomass. No obvious trends were found in Type 1 lakes. These results were reflected by the normalized biomass size spectrum, which showed a unimodal shape with a peak at medium sizes in Type 2 lakes and a peak at small sizes in Type 3 lakes. These results indicated a relative increase in medium-sized and small-sized species in Types 2 and 3 lakes, respectively. Our results suggested that fish predation might have a negative effect on zooplankton abundance but a positive effect on zooplankton size structure. High cyanobacterial biomass most likely caused a decline in the zooplankton size and encouraged the proliferation of small zooplankton. We suggest that both planktivorous fish and cyanobacteria have substantial effects on the shaping of zooplankton community, particularly in the lakes in the eastern plain along the Yangtze River where aquaculture is widespread and nutrient loading is high.
关键词[WOS]: CARP HYPOPHTHALMICHTHYS-MOLITRIX ; FOOD-WEB STRUCTURE ; SHALLOW LAKES ; BODY-SIZE ; CRUSTACEAN ZOOPLANKTON ; MICROCYSTIS-AERUGINOSA ; MESOCOSM EXPERIMENT ; EUTROPHIC LAKE ; CHINESE LAKE ; ECOSYSTEM
语种: 英语
WOS记录号: WOS:000325489100109
ISSN号: 1932-6203
Citation statistics:
内容类型: 期刊论文
URI标识: http://ir.ihb.ac.cn/handle/342005/19764
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.Huazhong Agr Univ, Coll Fisheries, Wuhan, Hubei, Peoples R China
2.Chinese Acad Sci, Donghu Expt Stn Lake Ecosyst, State Key Lab Freshwater Ecol & Biotechnol China, Inst Hydrobiol, Wuhan, Hubei, Peoples R China
3.Chinese Acad Sci, Nanjing Inst Geog & Limnol, Nanjing, Jiangsu, Peoples R China

Recommended Citation:
Zhang, Jing; Xie, Ping; Tao, Min; Guo, Longgen; Chen, Jun; Li, Li; Zhang, XueZhen; Zhang, Lu.The Impact of Fish Predation and Cyanobacteria on Zooplankton Size Structure in 96 Subtropical Lakes,PLOS ONE,2013,8(10):e76378
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