1982―1983年、2008―2010年东江东莞段水系小型浮游动物的群落特征比较  

Comparison of Community Structures of the Micro-Zooplankton in Dongjiang River System between Two Periods(1982―1983 & 2008―2010)

作　　者：张邦杰 莫介化 李敏 陈浩 黄林波 张瑞瑜 ZHANG Bang-jie;MO Jie-hua;LI Min;CHEN Hao;HUANG Lin-bo;ZHANG Rui-yu(Dongguan Fishery and Ocean Bureau, Dongguan 523008, China;Dongguan Aquatic Animal Epidemic Prevention and Quarantine Station, Dongguan 523127, China;Dongguan Agricultural and Technical School, Dongguan 523003, China)

机构地区：[1]东莞市海洋与渔业局,广东东莞523000 [2]东莞市水产技术推广站,广东东莞523127 [3]东莞市农业技术学校,广东东莞523003

出　　处：《广东海洋大学学报》2016年第6期65-73,共9页Journal of Guangdong Ocean University

基　　金：广东省科技计划项目(2005A20105001)

摘　　要：分两时段调查东江东莞段水系小型浮游动物的群落结构。结果表明,1982―1983年检出有61属109种,年际平均密度303.7个/L,生物量0.070 8 mg/L;2008―2010年检出有46属91种,年际平均密度1 350.4个/L,生物量0.845 6 mg/L。两时期的群落相似性指数为63%,纤毛虫最低仅26.3%,优势种相似性指数为50%;2008-2010年有23个物种没检出,新检出有23种。群落构成从1982―1983年的自养、食藻的原生动物与喜贫营养的轮虫群落为主,演替为2008–2010年以耐污食菌及碎屑的原生动物与喜富营养的轮虫群落为主,显现群落结构趋简单化,物种数减少,生物量增大,优势种的优势度非常明显,耐污(富营养)指示种大量出现。这与调查水质变化有关。Based on the surveys of the community structure of micro-zooplankton in Dongguan reachesof Dong Jiang River from 1982 to 1983, the results showed that there were 109 species under 61 genera,with average abundance 303.7 ind/L and biomass 0.0708 mg/L. According to the second investigationfrom 2008 to 2010, the results indicated that there were 91 species from 46 genera, with averageabundance 1 350.4 ind/L and biomass 0.8 456 mg/L, a community similarity of 63%, a dominantspecies similarity of 50% and a plankton ciliate similarity of 26.3%. The micro-zooplankton communitypresented some differences in comparison with the pattern in the 1980s. The variation tendency of thespecies number of the micro-zooplankton was reduced, the biomass was increased, the significance ofthe main dominant species was more obvious and the eutrophic species were discovered from 1982 to2010.

关 键 词：原生动物 轮虫 群落结构 历史变化 东江东莞段水系 

分 类 号：Q958.8[生物学—动物学]