Zooplankton spatial and diurnal variations in the Changjiang River estuary before operation of the Three Gorges Dam
Gao Xuelu1,2; Song Jinming1; Li Xuegang1
Source PublicationCHINESE JOURNAL OF OCEANOLOGY AND LIMNOLOGY
ISSN0254-4059
2011-05-01
Volume29Issue:3Pages:591-602
KeywordZooplankton Abundance Biomass Community Composition Changjiang (Yangtze) River Estuary China
Contribution Rank[Gao, XL; Song, JM; Li, XG] Chinese Acad Sci, Inst Oceanol, Key Lab Marine Ecol Environm Sci, Qingdao 266071, Peoples R China; [Gao, XL] Chinese Acad Sci, Yantai Inst Coastal Zone Res, Key Lab Coastal Environm Proc, Yantai 264003, Peoples R China
Corresponding AuthorChinese Acad Sci, Inst Oceanol, Key Lab Marine Ecol Environm Sci, Qingdao 266071, Peoples R China. jmsong@qdio.ac.cn
Department污染过程与控制实验室 
AbstractEstuarine plankton communities can serve as indicators of ecosystem modification in response to anthropogenic influences. The main objectives of this study were to describe the spatial distribution and diurnal variability in zooplankton abundance and biomass over almost entire salinity gradient of the Changjiang (Yangtze) River estuary and to provide a background reference for future studies. To accomplish this, data were collected from 29 stations in the estuary from May 19 to 26, 2003, including two anchor stations. The spatial and diurnal variations in zooplankton characteristics, i.e. abundance, biomass, and gross taxonomic composition, were examined. Generally, both the abundance and biomass gradually increased seaward and presented distinct spatial variations. In addition, the spatial data revealed a significant correlation between abundance and biomass; however, there was no significant correlation between abundance and biomass for the diurnal data. Although the zooplankton composition indicated distinct spatial differences in terms of dominant groups, copepods accounted for >50% of the total zooplankton abundance in most regions and times. Three zooplankton assemblages were recognized through hierarchical cluster analysis. These assemblages existed along the salinity gradient from fresh water to seawater, and their positions coincided with those of the three principal water masses in the estuary. The assemblages were classified as: (1) true estuarine, (2) estuarine and marine, and (3) euryhaline marine, which were characterized by the copepods Sinocalanus dorrii, Labidocera euchaeta, and Calanus sinicus, respectively. Both spatial and diurnal data indicated that there was no significant correlation between zooplankton abundance/biomass and depth-integrated phytoplankton abundance.; Estuarine plankton communities can serve as indicators of ecosystem modification in response to anthropogenic influences. The main objectives of this study were to describe the spatial distribution and diurnal variability in zooplankton abundance and biomass over almost entire salinity gradient of the Changjiang (Yangtze) River estuary and to provide a background reference for future studies. To accomplish this, data were collected from 29 stations in the estuary from May 19 to 26, 2003, including two anchor stations. The spatial and diurnal variations in zooplankton characteristics, i.e. abundance, biomass, and gross taxonomic composition, were examined. Generally, both the abundance and biomass gradually increased seaward and presented distinct spatial variations. In addition, the spatial data revealed a significant correlation between abundance and biomass; however, there was no significant correlation between abundance and biomass for the diurnal data. Although the zooplankton composition indicated distinct spatial differences in terms of dominant groups, copepods accounted for >50% of the total zooplankton abundance in most regions and times. Three zooplankton assemblages were recognized through hierarchical cluster analysis. These assemblages existed along the salinity gradient from fresh water to seawater, and their positions coincided with those of the three principal water masses in the estuary. The assemblages were classified as: (1) true estuarine, (2) estuarine and marine, and (3) euryhaline marine, which were characterized by the copepods Sinocalanus dorrii, Labidocera euchaeta, and Calanus sinicus, respectively. Both spatial and diurnal data indicated that there was no significant correlation between zooplankton abundance/biomass and depth-integrated phytoplankton abundance.
SubtypeArticle
Indexed BySCI
Language英语
WOS KeywordYANGTZE-RIVER ; VERTICAL MIGRATION ; COMMUNITY STRUCTURE ; BRISTOL CHANNEL ; SEVERN ESTUARY ; TIDAL CURRENTS ; RAINY-SEASON ; ARABIAN SEA ; CHINA ; SEDIMENT
WOS Research AreaMarine & Freshwater Biology ; Oceanography
WOS IDWOS:000292558100012
Funding OrganizationNational Natural Science Foundation of China for Creative Research Groups[40821004]; Chinese Academy of Sciences[KZCX1-YW-06-02]; National Basic Research Program of China (973 Program)[2007CB407305]
Citation statistics
Cited Times:3[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.yic.ac.cn/handle/133337/5127
Collection中科院海岸带环境过程与生态修复重点实验室_污染过程与控制实验室
中科院海岸带环境过程与生态修复重点实验室
Affiliation1.Chinese Acad Sci, Inst Oceanol, Key Lab Marine Ecol Environm Sci, Qingdao 266071, Peoples R China
2.Chinese Acad Sci, Yantai Inst Coastal Zone Res, Key Lab Coastal Environm Proc, Yantai 264003, Peoples R China
Recommended Citation
GB/T 7714
Gao Xuelu,Song Jinming,Li Xuegang. Zooplankton spatial and diurnal variations in the Changjiang River estuary before operation of the Three Gorges Dam[J]. CHINESE JOURNAL OF OCEANOLOGY AND LIMNOLOGY,2011,29(3):591-602.
APA Gao Xuelu,Song Jinming,&Li Xuegang.(2011).Zooplankton spatial and diurnal variations in the Changjiang River estuary before operation of the Three Gorges Dam.CHINESE JOURNAL OF OCEANOLOGY AND LIMNOLOGY,29(3),591-602.
MLA Gao Xuelu,et al."Zooplankton spatial and diurnal variations in the Changjiang River estuary before operation of the Three Gorges Dam".CHINESE JOURNAL OF OCEANOLOGY AND LIMNOLOGY 29.3(2011):591-602.
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