海南西北部近岸海域浮游动物群落结构与环境因子的关系  

Relationship between the zooplankton community structure and environmental factors offshore of northwest Hainan Island, China

作　　者：杨杰青 欧阳珑玲 唐峰华[1] 史赟荣[1] 晁敏[1] 王云龙[1] YANG Jieqing;OUYANG Longling;TANG Fenghua;SHI Yunrong;CHAO Min;WANG Yunlong(Key Laboratory of East China Sea Fishery Resources Exploitation,Ministry of Agriculture and Rural Affairs,East China Sea Fisheries Research Institute,Chinese Academy of Fishery Sciences,Shanghai 200090,China)

机构地区：[1]中国水产科学研究院东海水产研究所农业农村部东海渔业资源开发利用重点实验室

出　　处：《中国水产科学》2020年第2期236-249,共14页Journal of Fishery Sciences of China

基　　金：国家重点研发计划项目(2019YFD0901405)

摘　　要：根据2016年11月至2017年8月4个季度的调查资料,采用冗余分析模型,分析报道了海南西北部近岸海域浮游动物的种类组成、丰度和生物量、群落结构与环境因子之间的关系。结果表明,4个季度共鉴定浮游动物7门113属215种,种类数秋季最多(134种),丰度均值冬季最高(152.43 ind/m^3),生物量均值冬季最高(263.68 mg/m^3);浮游动物种类组成、丰度和生物量与水深、浮游植物丰度、透明度、表层水温、表层溶解氧和表层总氮显著相关(P<0.05),其中水深是关键环境因子,其影响随季节变化而变化;生态类群具有一定的生态分化现象,春季、夏季热带暖水种占优,秋季、冬季近岸暖水种占优,各季节生态类群受控的环境因子各异。To understand the community structure of zooplankton offshore of northwest Hainan Island and explore the relevant environmental factors affecting their distribution,we conducted seasonal investigations in sites offshore of northwest Hainan Island in November 2016 and February,May,and August 2017.A redundancy analysis model was used to analyze the relationship between the community structure and environmental factors.Nonmetric multidimensional scaling ordination analysis was applied to test the differences between the communities.Furthermore,ANOSIM similarity testing was used to analyze the differences among the communities.A total of 215 species,belonging to 113 genus and 7 phyla,were identified,among which 134 species were present in autumn and 94 in summer.The number of identified species was relatively close between winter(113 species)and spring(111 species).The seasonal differences in the average abundance of zooplankton was significant,being highest in winter(152.43 ind/m^3)and lowest in spring(64.76 ind/m^3).The seasonal differences in the average biomass of zooplankton was also significant,being highest in winter(263.68 mg/m^3)and lowest in spring(59.13 mg/m^3).The RDA showed that the water depth,phytoplankton abundance,transparency,surface temperature,surface dissolved oxygen,and surface total nitrogen have significant correlations with the community structure of zooplankton.Among these environmental factors,the water depth was the key factor,which affected the variation in the zooplankton community structure according to the seasons.Tropical warm water species were the dominant groups in spring and summer,while offshore warm water species were dominant in autumn and winter,suggesting an ecological differentiation among ecological groups.This was mainly caused by the flow direction of the current in Beibu Bay.Compared with the same latitude(waters of Cheng Mai and Dongzhai Harbor)and a lower latitude(Sanya Bay and waters of Wanning),higher amounts of zooplankton species were found offshore of northwest Ha

关 键 词：海南 浮游动物 生态类群 群落结构 环境因子 

分 类 号：S931[农业科学—渔业资源] P735[农业科学—水产科学]