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题名: Effects of the proximal factors on the diel vertical migration of zooplankton in a plateau meso-eutrophic Lake Erhai, China
作者: Hu, Cuilin1, 2; Wang, Shengrui3; Guo, Longgen2; Xie, Ping1, 2
关键词: Weighted mean depth ; zooplankton ; Lake Erhai ; diel vertical migration ; water transparency
刊名: JOURNAL OF LIMNOLOGY
发表日期: 2014
DOI: 10.4081/jlimnol.2014.684
卷: 73, 期:2, 页:375-386
收录类别: SCI
文章类型: Article
WOS标题词: Science & Technology ; Life Sciences & Biomedicine
类目[WOS]: Limnology
研究领域[WOS]: Marine & Freshwater Biology
英文摘要: To study the proximal factors inducing diel vertical migration (DVM) in large and small zooplankton species in a plateau lake in China, we investigated the DVM of crustacean zooplankton in Lake Erhai bimonthly from November 2009 to September 2010. We hypothesized that the factors affecting DVM behaviour in different-sized zooplankton were different. A linear regression was used to assess the relationships between environmental variables and the vertical distribution of zooplankton. All crustacean zooplankton exhibited normal DVM patterns (down during the day, up at night) across sampling months. The weighted mean depth (WMD) of all zooplankton did not show a significant correlation with the WMD of the dominant phytoplankton and chlorophyll-a. However, a negative relationship was observed between the distribution of zooplankton and water temperature in January, March, and July 2010, but the relationship was relatively weak (R-2 between 0.1 and 0.4). The vertical distribution of zooplankton was primarily affected by water transparency (P0.05), whereas the factors inducing DVM behaviour differed between large and small zooplankton. Predation avoidance and phototactic behaviour may be the dominant factors influencing DVM of large species, whereas only phototaxis contributed to the migratory behaviour of small species.
关键词[WOS]: ULTRAVIOLET-RADIATION ; CRUSTACEAN ZOOPLANKTON ; HABITAT SELECTION ; FOOD AVAILABILITY ; FISH PREDATION ; UV-RADIATION ; DAPHNIA ; TRANSPARENCY ; COPEPOD ; CONSEQUENCES
语种: 英语
WOS记录号: WOS:000342807000016
ISSN号: 1129-5767
Citation statistics:
内容类型: 期刊论文
URI标识: http://ir.ihb.ac.cn/handle/342005/20322
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 430072, Peoples R China
2.Chinese Acad Sci, Inst Hydrobiol, State Key Lab Freshwater Ecol & Biotechnol China, Donghu Expt Stn Lake Ecosyst, Wuhan 430072, Peoples R China
3.Chinese Res Inst Environm Sci, Res Ctr Lake Environm, Beijing 100012, Peoples R China
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