Species Composition,Spatial and Temporal Distribution of Zooplankton Community in Miaodao Archipelago

Abstract

Based on 4 cruises in August and October 2018, February and May 2019,water quality and zooplankton at 59 stations in Miaodao Archipelago were investigated. The community structure, spatial and temporal distribution of zooplankton collected by type I net and the correlation with various environmental factors were analyzed statistically. The results showed that: a total of 93 species of zooplankton were identified in Miaodao Archipelago, including 13 categories, the species of copepods and planktonic larvae were 25 respectively, accounting for 53.8% in total. The dominant species in different seasons were different, and Calanus sinicus was dominant in all seasons. The abundance of zooplankton ranged from 3.0 to 2 720 ind/m3, with an average of 122.41 ind/m3, and the biomass ranged from 0.25 to 3 106.75 mg/m3, with an average of 172.15 mg/m3. The Shannon-Wiener index varied from 0.058 to 3.670, with an average of 1.431, the Pielou evenness index varied from 0.030 to 0.922, with an average of 0.467, and the Margalef index varied from 0.362 to 7.964, with an average of 2.358. The results of Pearson correlation analysis and canonical correspondence analysis showed that the distribution of zooplankton was influenced by various environmental factors, among which temperature and salinity were the most important factors.

Keywords

• miaodao archipelago
• zooplankton
• spatial and temporal distribution
• species composition
• environmental factors