Phytoplankton Community in Red-tide-monitoring Area of Zhangzidao Island in Dalian
JIANG Shan
CHEN Yanzhen
CAO Geran
LIU Xigang
Abstract：The biomass,species composition and the community structure of phytoplankton in red-tide monitoring area,Zhangzidao Island,Dalian were studied based on the phytoplankton data at 6 stations from May to October in 2011.The mean values of the phytoplankton biomass during the study period were 7.30×104 ～685 × 104 cell/m3.The maximum was observed in late October and the minimum in late July.The result showed that 74 species were identified,which belonged to 3 phyla with 40 genera.Among the identified species,30 genera and 54 species were Bacillariophyta,9 genera and 11 species were Pyrrophyta,1 genera and 1 species was Chrysophyta.The dominant species,including Chaetoceros curvisetus,Chaetoceros debilis,Ceratium fusus,Chaetoceros affinis,Pseudo-nitzschia pungens,were all red-tide algae.Shannon-Weaver diversity index ranged from 1.958 to 3.100,and the average value was 2.467.Pielou's evenness index ranged from 0.338 to 0.632,and the average value was 0.522.According to the diversity index,the phytoplankton structure was relatively stable.Growth of phytoplankton was mainly restricted by phosphate.
Keywords：red-tide-monitoring area of Zhangzidao Islandphytoplanktoncommunity
Publication Date：2017-01-01
Online Publishing Date：2026-05-22(First online date of this platform, not the publication date of the document)
Pages：6( 63-68 )