2019—2020年海南海尾湾浮游植物与环境因子的调查分析  

Investigation and analysis of phytoplankton and environmental factors in Haiwei Bay,Hainan from 2019 to 2020

作　　者：贺长皓 李亚军[2] 张秀霞[2] 曾茹 黄晓晴 费小雯 邓晓东[2] HE Chang-hao;LI Ya-jun;ZHANG Xiu-xia;ZENG Ru;HUANG Xiao-qing;FEI Xiao-wen;DENG Xiao-dong(School of Basic Medicine and Life Sciences,Hainan Medical College,Haikou,Hainan 571199,China;Institute of Tropical Biotechnology,Chinese Academy of Tropical Agricultural Sciences/Key Laboratory of Research and Utilization of Functional Components of Marine Biological Resources in Hainan Province,Haikou,Hainan 571101,China)

机构地区：[1]海南医学院基础医学与生命科学学院,海南海口571199 [2]中国热带农业科学院热带生物技术研究所/海南省海洋生物资源功能性成分研究与利用重点实验室,海南海口571101

出　　处：《南方农业学报》2022年第10期2766-2777,共12页Journal of Southern Agriculture

基　　金：国家自然科学基金项目(31870344);农业农村部财政专项(NFZX2021);海南省重点科技计划项目(ZDYF2018124);中国热带农业科学院基本科研业务费专项(1630052019012)。

摘　　要：【目的】明确海南海尾湾海域浮游植物群落组成及其与环境因子的相关性,为保护海尾湾海域浮游植物多样性和水体环境提供参考依据。【方法】于2019年7月(夏季)和9月(秋季)及2020年7月(夏季),对海南岛海尾湾近岸海域的12个固定采样点(站点)进行3个航次的水样采集调查,返航后对浮游植物的群落结构、水质及周边环境等进行鉴定和记录,并通过冗余分析(RDA)探究浮游植物群落结构与环境因子的相关性。【结果】2019—2020年的夏季航次采集水样共鉴定出浮游植物4门147种,以硅藻门种类(121种)为主,其次是甲藻门(18种);优势种包括旋链角毛藻(Chaetoceros curvisetus)、菱形海线藻(Thalassionema nitzschioides)、佛氏海毛藻(Thalassiothrix frauenfeldii)、并基角毛藻(C.decipiens)、奇异棍形藻(Bacillaria paradoxa Gmelin.)、冰河星杆藻(Alexandrum catenclla)及拟旋链角毛藻(C.pseudocurvisetus)等;各调查站位浮游植物的平均细胞密度为17.50×104cells/m3,Shannon-Wiener多样性指数(H’)介于3.07~4.33,Pielou均匀度指数(J’)介于0.58~0.85,丰富度指数(D)介于1.34~5.12。2019年秋季航次共鉴定出浮游植物3门86种,其优势种包括旋链角毛藻、拟旋链角毛藻、覆瓦根管藻(Rhizosolehia imbricata var.Schrubsolei)、细弱海链藻(Thalassiosira subtilis)、中华根管藻(Rhizosolenia sinensis)及菱形海线藻等;各调查站点浮游植物的平均细胞密度为53.80×104cells/m3,H’介于1.80~3.35,J’介于0.33~0.63,D介于1.66~3.39。影响海尾湾海域浮游植物的重要环境影响因子是水温、SiO4和NH4-N;RDA分析结果表明,旋链角毛藻群落结构与SiO4和COD呈正相关,而拟旋链角毛藻群落结构与水温、化学需氧量(COD)和pH呈正相关。【结论】2019年夏季—2020年夏季海南海尾湾海域的水生环境良好,浮游植物物种丰富度高,影响海尾湾海域浮游植物的重要环境影响因子是水温、SiO4和NH4-N。因此,在掌握�【Objective】To clarify the composition of phytoplankton community and its correlation with environmenta factors in Haiwei Bay,Hainan,so as to provide reference for the protection of phytoplankton diversity and water environment in Haiwei Bay.【Method】In July(summer)and September(autumn)2019 and July(summer)2020,water samples were collected from 12 fixed sampling points in the coastal waters of Haiwei Bay,Hainan Island for 3 cruises.After returning,phytoplankton community structure,water quality and surrounding environment were identified and recorded,and the correlation between phytoplankton community structure and environmental factors was studied through redundancy analysis(RDA).【Result】147 species of 4 phyla of phytoplankton were found in summer cruises from 2019 to 2020,among them Bacillariophyta species(121 varieties)accounted for the most,followed by Pyrrophyta species(18 varieties).The dominant algae species in the waters were Chaetoceros curvisetus,Thalassionema nitzschioide,Chaetoceros decipiens,Thalassiothrix frauenfeldii,Bacillaria paradoxa,Asterionella glaciali and Chaetoceros pseudocurvisetus,etc.;in the investigated sites,the average cell density was 17.50×10~4cells/m~3,Shannon-Wiener diversity index(H’)was 3.07-4.33,the Pielou evenness index(J’)was 0.58-0.85,and the richness index(D)was 1.34-5.12.86 species of 3 phyla of phytoplankton were found in autumn cruises in 2019,and the dominant algae species in the waters were C.curvisetus,C.pseudocurvisetus,Rhizosolehia imbricata,Thalassiosira subtilis,Rhizosolenia sinensis and T.nitzschioide;in the investigated sites,the average cell density was 53.80×10~4cells/m~3,H’was 1.80-3.35,J’was 0.33-0.63,and D was 1.66-3.39.Important environment factors that influencing waters in Haiwei Bay were water tempreture,SiO4and NH4-N;according to RDA,C.curvisetus community structure was positively correlated with SiO4and chemical oxygen demand(COD)and C.pseudocurvisetus community structure was positively correlated with water tempreture,COD and pH.�

关 键 词：海尾湾 浮游植物 群落结构 优势种 环境因子 冗余分析 

分 类 号：S917.3[农业科学—水产科学]