杭州湾滩涂河口桡足类群落丰度和生物量与水质参数的通径分析  

Path Analysis between Abundance,Biomass of Estuarine Copepods Community and Water Quality Parameters in the Intertidal Zone of Hangzhou Bay

作　　者：李共国[1] 屠霄霞[1] 王佩儿[1] 徐智焕[1] 杨季芳[1] 徐杭英[2] 黄艺[3] 

机构地区：[1]浙江万里学院生物与环境学院,浙江宁波315100 [2]浙江省环境监测中心,浙江杭州310007 [3]北京大学环境科学与工程学院,北京100871

出　　处：《湿地科学》2017年第6期766-773,共8页Wetland Science

基　　金：浙江省自然科学基金青年基金项目(Q13C030015);欧盟科技人才培养项目(STF/32);宁波市自然科学基金项目(2010C50001)资助

摘　　要：2010年4月~2011年1月期间,在高潮位和中潮位下,分别对杭州湾南岸滩涂排水区和非排水区的5个断面进行桡足类丰度和生物量进行调查。结果表明,共发现15种河口桡足类,包括剑水蚤3种、哲水蚤5种和猛水蚤7种;第一优势种为汤匙华哲水蚤(Sinocalanus dorrii),第二优势种为四刺窄腹剑水蚤(Limnoithona tetraspina);研究区河口桡足类的平均丰度为15.3 ind./L,平均生物量为0.214 mg/L,主要分布在排水区的S3和S2采样断面。在春季采样日,滩涂水中的NO2—N和PO4—P营养盐通过浮游植物生物量影响桡足类群落,浮游植物生物量是河口桡足类丰度发展的决策因子和桡足类生物量波动的限制因子;在夏季采样日,水中的高浓度NH4—N通过NO2—N含量损害桡足类,成为桡足类丰度变化的限制因子;温排水通过减少海水溶解氧含量间接影响桡足类生长,成为桡足类生物量变化的限制因子;在秋季采样日,水中的Si O3—Si含量是桡足类丰度和生物量的决策因子。In order to understand the estuarine copepods abundance, biomass and their relationships with environmental factors in the intertidal zone of Hangzhou Bay, 40 samples were conducted at high tide level and middle tide level in 5 sampling profiles（S1, S2 and S3 profiles for discharge area, and S4 and S5 profiles for non-discharge area） on April 18（spring）, June 29（summer）, October 24（autumn）, 2010 and January 6（winter）, 2011. A total of 15 estuarine species of Copepoda（3 Cyclopoida, 5 Calanoida and 7 Harpacticoida） were found. The first dominant species was Sinocalanus dorrii, the second dominant species was Limnoithona tetraspina. The average abundance of estuarine copepods for all sampling days was 15.3 ind./L, the average biomass was 0.214 mg/L, mainly distributed in the S3 and S2 profiles. The contents of NO2—N and PO4—P in the water of the intertidal zone influenced copepods through phytoplankton biomass at sampling days in spring, the biomass of phytoplankton was decision factor in the development of estuarine copepods abundance, and the limiting factor in fluctuations of copepods biomass. At sampling day in summer, the estuarine copepods, which were affected by high NH4—N concentration through NO2—N impairing, became a limiting factor in changes of copepods abundance, thermal discharge water had become a limiting factor in fluctuations of copepods biomass, mainly through reducing seawater dissolved oxygen content of indirect effected on estuarine copepods living. The Si O3—Si content was decision factor in the development of estuarine copepods abundance and biomass at sampling day in autumn.

关 键 词：滩涂 河口桡足类 丰度 生物量 通径分析 杭州湾 

分 类 号：Q178.11[生物学—水生生物学]