上海海洋大学学报2024，Vol.33Issue(4)：927-937,11.DOI:10.12024/jsou.20240304441
2021-2022年西北太平洋公海浮游动物种类组成与分布特征
Zooplankton species composition and distributional characteristics in the high seas of the Northwest Pacific Ocean in 2021-2022
摘要
Abstract
Zooplankton is an important link between primary producers and lower trophic level organisms in the marine food web,and is an important biological basis for the formation of fishing grounds.Based on the zooplankton samples collected by the fishery resources survey vessel"Songhang"of Shanghai Ocean University during the comprehensive scientific survey of fishery resources in the high seas of the Northwest Pacific Ocean from June to August in 2021 and 2022,the zooplankton samples were analyzed in terms of their species composition,distributional characteristics,and their relationship with the environment.The results showed that a total of 174 zooplankton species were collected in the surveyed area over the two years,belonging to 10 groups.Copepoda and planktonic larvae were the most abundant zooplankton,with 95 and 22 species identified respectively,accounting for 54.6％and 12.6％of the total number of species,followed by Scyphozoa,with 18 species identified,and Ostracoda,Tunicata,Chaetognatha,Euphausiacea,and Gastropoda with 11,9,6,4 and 3 species respectively.Additionally,two species each of Polychaeta,Amphipoda,and Cladocera were identified.The dominant genes(species)included seven categories:Clausocalanus sp.,Oncaea sp.,Paracalanus sp.,Calocalanus sp.,Oithona plumifera,Oithona decipiens and Metridinidae larvae.The species diversity and dominant genes(species)composition were similar in both years.The mean zooplankton abundance in 2021 was 732.89 ind./m3,lower than that in 2022(1 418.88 ind./m3).The Shannon-Wiener index in 2021 was 1.57-3.16,the Evenness index was 0.54-0.91,and the abundance index was 0.84-3.36.All three indices were higher than those in 2022,which ranged from 0.66 to 2.92,0.26 to 0.94,and 0.77 to 3.11,respectively.GAM analyses showed that zooplankton abundance was significantly and negatively correlated with the sea-surface salinity and the water temperature in the 200 m layer,and the analyses suggested that the Kuroshio current and the Oyashio also had a certain effect on the temporal and spatial distributions of the abundance.The results of this study will provide basic information for the study of zooplankton in the high seas of the Northwest Pacific Ocean.关键词
浮游动物/物种组成/多样性指数/GAM模型/西北太平洋Key words
zooplankton/species composition/diversity index/GAM/Northwest Pacific Ocean分类
生物科学引用本文复制引用
沈维,刘必林,刘庭羽..2021-2022年西北太平洋公海浮游动物种类组成与分布特征[J].上海海洋大学学报,2024,33(4):927-937,11.基金项目
上海市高校特聘教授"东方学者"岗位跟踪计划(GZ2022011) （GZ2022011）
农业农村部全球渔业资源调查监测评估(公海渔业资源综合科学调查)专项(D-8025-23-1002) （公海渔业资源综合科学调查）
