桑沟湾微微型浮游生物丰度和生物量分布的季节变化  

Seasonal variation of the abundance and biomass of picoplankton in the Sanggou Bay

作　　者：赵燕楚 赵丽[1,2,7] 张武昌 刘素美[2,4] 蒋增杰[5,6] 方建光 赵苑 肖天[1,2,7] ZHAO Yan-chu;ZHAO Li;ZHANG Wu-chang;LIU Su-mei;JIANG Zeng-jie;FANG Jian-guang;ZHAO Yuan;XIAO Tian(CAS Key Laboratory of Marine Ecology and Environmental Sciences,Institute of Oceanology,Chinese Academy of Sciences,Qingdao 266071,China;Laboratory for Marine Ecology and Environmental Science, Qingdao National Laboratory for Marine Science and Technology,Qingdao 266237,China;University of Chinese Academy of Sciences,Beijing 100049,China;Key Laboratory of Marine Chemistry Theory and Technology,Ministry of Education,Ocean University of China,Qingdao 266100,China;Key Laboratory for Sustainable Development of Marine Fisheries,Ministry of Agriculture,Shandong Provincial Key Laboratory of Fishery Resources and Eco-Environment,Yellow Sea Fisheries Research Institute,Chinese Academy of Fishery Sciences,Qingdao 266071,China;Function Laboratory for Marine Fisheries Science and Food Production Processes,Qingdao National Laboratory for Marine Science and Technology,Qingdao 266071, China;Center for Ocean Mega-Science,Chinese Academy of Sciences,Qingdao 266071,China)

机构地区：[1]中国科学院海洋生态与环境科学重点实验室(中国科学院海洋研究所),山东青岛266071 [2]青岛海洋科学与技术国家实验室海洋生态与环境科学功能实验室,山东青岛266237 [3]中国科学院大学,北京100049 [4]中国海洋大学海洋化学理论与工程技术教育部重点实验室,山东青岛266100 [5]农业部海洋渔业资源可持续利用重点开放实验室,山东省渔业资源与生态环境重点实验室,中国水产科学研究院黄海水产研究所,山东青岛266071 [6]青岛海洋科学与技术国家实验室海洋渔业科学与食物产出过程功能实验室,山东青岛266071 [7]中国科学院海洋大科学研究中心,山东青岛266071

出　　处：《海洋科学》2018年第5期145-154,共10页Marine Sciences

基　　金：国家自然科学基金委员会-山东省人民政府海洋科学研究中心联合资助项目“海洋生态与环境科学”(U1606404);国家自然科学基金项目(41306161,41306160,41676147)。

摘　　要：于2013年4月、7月、10~月和2014年1月,分四个季节在桑沟湾利用流式细胞技术对桑沟湾微微型浮游生物丰度和生物量的时空分布特征进行了研究,并统计分析了其与环境因子之间的关系。结果表明,四个季节中桑沟湾聚球藻丰度和生物量分别为0.04×10~3～408.59×10~3个/mL、0.01～10~2.15 mg/m3,微微型真核浮游生物的丰度和生物量分别为0.21×10~3～99.64×10~3个/mL、0.31～149.46 mg/m3,异养细菌的丰度和生物量分别为3.34×10~5～50.16×10~5个/mL、6.68～10~0.32 mg/m3。四个季节中,夏季桑沟湾微微型浮游生物的丰度和生物量高于其他季节。异养细菌对微微型浮游生物总生物量的四季平均贡献为62.11%,高于自养微微型浮游生物;微微型真核浮游生物占自养微微型浮游生物总生物量比例最高,平均可达86.85%。统计分析显示温度、叶绿素a和营养盐浓度是影响桑沟湾微微型浮游生物丰度和生物量分布的主要因素。上述结果为桑沟湾生态环境的检测和评估提供了基础数据。This study aims to investigate the abundance,biomass,and distribution of picoplankton in the Sanggou Bay using flow cytometry in April 2013(spring),July 2013(summer),October 2013(autumn),and January 2014(winter)and analyze the correlations with environmental factors.The results revealed that the abundance and biomass ranged as follows:Synechococcus,0.04?103?408.59?103 cells/mL and 0.01?102.15 mg/m3;picoeukaryotes,0.21?103?99.64?103 cells/mL and 0.31?149.46 mg/m3;and heterotrophic prokaryotes,3.34?105?50.16?105 cells/mL and 6.68?100.32 mg/m3,respectively.The abundance and biomass of picoplankton were higher in summer than other seasons.In four seasons,the biomass of heterotrophic picoplankton,the average contribution of which accounted for 62.11%,was higher than that of autotrophic picoplankton.In autotrophic picoplankton,picoeukaryotes were the major contributor of the biomass,and their average contribution was 86.85%.Temperature,chlorophyll a,and nutrient concentrations were primary factors that affected the abundance and biomass distribution of picoplankton.This study will provide the basic data for the evaluation of the ecological environment of the Sanggou Bay.

关 键 词：微微型浮游生物 丰度 生物量 季节变化 桑沟湾 

分 类 号：Q178[生物学—水生生物学]