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学科主题: Marine & Freshwater Biology
题名: Crustacean zooplankton size structure in aquaculture lakes: is larger size structure always associated with higher grazing pressure?
作者: Wang, Songbo; Xie, Ping; Wu, Shikai; Wang, Haijun
通讯作者: Xie, P, Chinese Acad Sci, Donghu Expt Stn Lake Ecosyst, State Key Lab Freshwater Ecol & Biotechnol China, Inst Hydrobiol, Wuhan 430072, Peoples R China
关键词: mean body length ; total phosphorus ; chlorophyll a ; filter-feeding fish
刊名: HYDROBIOLOGIA
发表日期: 2007
DOI: 10.1007/s10750-006-0394-7
卷: 575, 页:203-209
收录类别: SCI
文章类型: Article
部门归属: Chinese Acad Sci, Donghu Expt Stn Lake Ecosyst, State Key Lab Freshwater Ecol & Biotechnol China, Inst Hydrobiol, Wuhan 430072, Peoples R China
WOS标题词: Science & Technology ; Life Sciences & Biomedicine
类目[WOS]: Marine & Freshwater Biology
研究领域[WOS]: Marine & Freshwater Biology
摘要: Crustacean zooplankton size structure in 27 aquaculture lakes was studied to test the hypothesis that larger size structure is associated with higher grazing pressure. Mean body length of crustaceans was positively correlated with increasing Chl a (r(2) = 0.40, P = 0.000) and TP (r(2) = 0.38, P = 0.000), contrary to the empirical studies. However, the ratio of zooplankton to phytoplankton biomass decreased significantly with increasing TP (r(2) = 0.27, P = 0.005) and mean body length (r(2) = 0.46, P = 0.000). Meanwhile, size structure showed no significant effect in explaining residual variations of phosphorus-chlorophyll relationship (P = 0.231). These results indicate that larger size structure was not always associated with higher zooplankton grazing pressure. It is likely that in aquaculture lakes crustacean zooplankton size structure was of minor importance in control of phytoplankton biomass, and it was mainly regulated by fish predation. The results showed in our study and the empirical studies might be a reflection of two different stages of lake eutrophication and fish predation intensity.
英文摘要: Crustacean zooplankton size structure in 27 aquaculture lakes was studied to test the hypothesis that larger size structure is associated with higher grazing pressure. Mean body length of crustaceans was positively correlated with increasing Chl a (r(2) = 0.40, P = 0.000) and TP (r(2) = 0.38, P = 0.000), contrary to the empirical studies. However, the ratio of zooplankton to phytoplankton biomass decreased significantly with increasing TP (r(2) = 0.27, P = 0.005) and mean body length (r(2) = 0.46, P = 0.000). Meanwhile, size structure showed no significant effect in explaining residual variations of phosphorus-chlorophyll relationship (P = 0.231). These results indicate that larger size structure was not always associated with higher zooplankton grazing pressure. It is likely that in aquaculture lakes crustacean zooplankton size structure was of minor importance in control of phytoplankton biomass, and it was mainly regulated by fish predation. The results showed in our study and the empirical studies might be a reflection of two different stages of lake eutrophication and fish predation intensity.
关键词[WOS]: FOOD-WEB STRUCTURE ; COMMUNITY STRUCTURE ; PHOSPHORUS CHLOROPHYLL ; BODY-SIZE ; FISH ; PLANKTON ; MECHANISMS ; PREDATION ; CLADOCERANS ; RESERVOIRS
语种: 英语
WOS记录号: WOS:000242505000016
ISSN号: 0018-8158
Citation statistics:
内容类型: 期刊论文
URI标识: http://ir.ihb.ac.cn/handle/152342/8758
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, Donghu Expt Stn Lake Ecosyst, State Key Lab Freshwater Ecol & Biotechnol China, Inst Hydrobiol, Wuhan 430072, Peoples R China

Recommended Citation:
Wang, Songbo; Xie, Ping; Wu, Shikai; Wang, Haijun.Crustacean zooplankton size structure in aquaculture lakes: is larger size structure always associated with higher grazing pressure?,HYDROBIOLOGIA,2007,575():203-209
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