海南省虎威岭海域浮游生物群落结构的特征分析

Characteristics of Plankton Community Structure in the Huwei Island, Hainan Province

利用网采法于2017年在虎威岭海域对浮游生物的群落结构特征及其时空分布特点进行调查,共发现浮游植物5门43属65种,硅藻最多有41种,浮游动物共鉴定到9类21种,桡足类最多有7种.夏季浮游植物细胞密度和浮游动物密度均为全年最高.全年浮游植物优势种以硅藻为主,有15种;浮游植物以桡足类为主,有5种.秋季小环藻优势度高达0.60,夏季根状拟铃虫优势度高达0.57.浮游生物的均匀度指数与多样性指数呈正相关,当地浮游生物群落结构较稳定,根据多样性指数污染评价分析,该海域处于轻污染到中污染.由于目前该海域仍没有相关的生物群落调查,该研究将为该海域环境提供科学评价,为开发研究提供理论基础.

In the report,the net trawling method was used to investigate the community structure characteristics, spatial and temporal distribution characteristics of plankton in the Huweiling sea area in 2017. A total of 65 species of phytoplankton were found,in which 41 species of diatoms were identified. There are 21 species of zooplankton were found,including 7 species of copepods. In summer,the phytoplankton cell density and zooplankton density were highest. The dominant species of phytoplankton in the whole year were diatoms,with 15 species;the dominant species of zooplankton were copepods,with 5 species. In autumn,the dominant degree of the small ring algae was 0. 60;in summer,the dominance of the root-loaded bollworm was 0. 57. The plankton uniformity index was positively correlated with the diversity index,and the local plankton community structure was relatively stable. According to the diversity index pollution assessment,the sea area was under the medium pollution condition.