| 2006年秋季长江口及邻近海域微微型浮游生物的分布特征及环境影响因素 |
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| 引用本文： | 乐凤凤,刘诚刚,郝锵,史君贤,翟红昌.2006年秋季长江口及邻近海域微微型浮游生物的分布特征及环境影响因素[J].海洋学研究,2011(3):108-117. |
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| 作者姓名： | 乐凤凤 刘诚刚 郝锵 史君贤 翟红昌 |
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| 作者单位： | 国家海洋局第二海洋研究所国家海洋局海洋生态系统与生物地球化学重点实验室; |
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| 基金项目： | 国家重点基础研究发展计划资助项目(2011CB409803、2010CB428903、2006CB400605) |
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| 摘 要： | 2006年10月在长江口及邻近海域采用流式细胞技术测定了微微型浮游生物:聚球藻Synechococcus、微微型光合真核生物(picoeukaryotes)和异养浮游细菌(heterotrophic bacteria)的丰度和碳生物量,研究了其生态分布特点,并分析了其与环境因子之间的关系.结果表明,聚球藻、微微型光合真...
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| 关 键 词： | 聚球藻 微微型光合真核生物 异养浮游细菌 丰度 碳生物量 环境影响因素 长江口及邻近海域 |
Distribution and environmental impact factors of picoplankton in Changjiang River Estuary and its adjacent sea areas in autumn of 2006 |
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| LE Feng-feng,LIU Cheng-gang,HAO Qiang,SHI Jun-xian,ZHAI Hong-chang.Distribution and environmental impact factors of picoplankton in Changjiang River Estuary and its adjacent sea areas in autumn of 2006[J].Journal of Marine Sciences,2011(3):108-117. |
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| Authors: | LE Feng-feng LIU Cheng-gang HAO Qiang SHI Jun-xian ZHAI Hong-chang |
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| Institution: | LE Feng-feng,LIU Cheng-gang,HAO Qiang,SHI Jun-xian,ZHAI Hong-chang(Second Institute of Oceanography,SOA,Laboratory of Marine Ecosystem and Biogeochemistry,Hangzhou 310012,China) |
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| Abstract: | In October 2006,an autumn cruise was conducted in the adjacent sea areas of Changjiang River Estuary to investigate the abundance,carbon biomass and distribution of picoplankton(Pico) and their relationship with environmental factors.Three groups of picoplankton,that is,Synechococcus(SYN),picoeukaryotes(PEUK) and heterotrophic bacteria(HBAC) were identified.The results show that the average abundance of SYN,PEUK and HBAC was(29.5±35.1)×103 cells/cm3,(0.9±0.6)×103 cells/cm3 and(7.6±4.3)×105 cells/cm3,and the mean carbon biomass was(5.2±6.1) mg/m3,(1.4±0.9) mg/m3 and(15.2±8.6) mg/m3 respectively.The cell abundance of each group showed different distribution characteristics.As for horizontal distribution,the abundance of SYN was low nearshore and high offshore with the high value at the east and southeast areas off the estuary,and that of PEUK was similar to SYN with the high value at the southern part of the study area.The high value of HBAC appeared in the northern area off the estuary.And for the vertical direction,they were evenly distributed in nearshore waters.Their subsurface abundance maximum occurred in offshore waters with that for SYN at the bottom of euphotic layer,while that for PEUK and HBAC at the surface or bottom of euphotic layer.The results of environmental factor correlation analysis showed that there was a distinct positive correlation between picoplankton carbon biomass and water temperature,and a close negative correlation between picoplankton and nutrients,total suspended materials and particle organic carbon. |
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| Keywords: | Synechococcus picoeukaryotes heterotrophic bacteria abundance carbon biomass environmental impact factor adjacent sea area of Changjiang River Estuary |
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