三亚湾近岸海域浮游甲藻与水环境因子相关性研究  

Correlation Between Planktonic Dinoflagellates and Water Environmental Factors in Coastal Waters of Sanya Bay

作　　者：王蒙 王兴华 李翔 赵茜 李格乐 王辉 殷安齐 WANG Meng;WANG Xinghua;LI Xiang;ZHAO Qian;LI Gele;WANG Hui;YIN Anqi(Key Laboratory of Utilization and Conservation for Tropical Marine Bioresources,Ministry of Education,Hainan Tropical Ocean University,Sanya 572022,China;Modern Marine Ranching Engineering Research Center of Hainan,Hainan Tropical Ocean University,Sanya 572022,China;Hainan Key Laboratory for Conservation and Utilization of Tropical Marine Fishery Resources,Hainan Tropical Ocean University,Sanya 572022,China;Hainan Key Laboratory for Coastal Marine Ecological Environment Process and Carbon Sink,Hainan Tropical Ocean University,Sanya 572022,China;College of Ecology and Environment,Hainan Tropical Ocean University,Sanya 572022,China;Institute of Deep-sea Science and Engineering,Chinese Academy of Sciences,Sanya 572000,China;Zhanjiang Port(Group)Co.,Ltd.,Zhanjiang 524068,China;Sanya Agricultural Technology Extension Service Center,Sanya 572019,China)

机构地区：[1]海南热带海洋学院热带海洋生物资源利用与保护教育部重点实验室,海南三亚572022 [2]海南热带海洋学院海南省现代化海洋牧场工程研究中心,海南三亚572022 [3]海南热带海洋学院海南省热带海洋渔业资源保护与利用重点实验室,海南三亚572022 [4]海南热带海洋学院海南省近岸海洋生态环境过程与碳汇重点实验室,海南三亚572022 [5]海南热带海洋学院生态环境学院,海南三亚572022 [6]中国科学院深海科学与工程研究所,海南三亚572000 [7]湛江港(集团)股份有限公司,广东湛江524068 [8]三亚市农业技术推广服务中心,海南三亚572019

出　　处：《海洋科学进展》2024年第4期709-724,共16页Advances in Marine Science

基　　金：海南热带海洋学院教育教学改革研究项目(RHYjg2023-15)。

摘　　要：为了解三亚湾近岸海域浮游甲藻分布状况及其与水环境因子的关系,本研究分别于2022年枯水期(4月)、丰水期(7月)和平水期(11月)水采了三亚湾近岸海域浮游甲藻样品及水环境样品,并进行了研究与分析。样品分析结果显示,三亚湾近岸海域共鉴定出甲藻5目13科17属50种,按类群分类赤潮甲藻可分为25种,其中有毒赤潮甲藻占13种;3个水期共计优势甲藻10种,其中9种为赤潮甲藻,有毒赤潮甲藻占5种;枯水期、丰水期、平水期第一优势甲藻均为赤潮甲藻,分别为凯伦藻(Karenia sp.)、四齿多甲藻(Peridinium quadridentatum)和环状异帽藻(Heterocapsa circularisquama);同一站点不同水期水环境因子波动较小,空间上无机氮磷营养盐两端站点质量浓度高,中间站点质量浓度低。Spearman相关性分析表明,NH_(4)^(+)-N、NO_(3)^(-)-N及NO_(2)^(-)-N是影响三亚湾近岸海域浮游甲藻群落结构的主要驱动因子。RDA分析结果显示,三亚湾近岸海域优势赤潮甲藻分布与水温、盐度、无机氮磷营养盐质量浓度相关性显著。总体而言,三亚湾近岸海域浮游甲藻尤其是优势赤潮甲藻,对无机氮磷营养盐响应最为密切。本研究调查结果可作为三亚湾浮游甲藻种类分布统计数据的补充,并为分析其与水环境因子的相关性、监测该海域甲藻赤潮风险程度提供基础资料。In order to understand the distribution of planktonic dinoflagellate in the coastal waters of Sanya Bay and its relationship with water environmental factors,samples of both planktonic dinoflagellate and water environment in the coastal waters of Sanya Bay were collected and investigated during the dry season(April),wet season(July)and normal season(November)in 2022 during dry season(April),wet season(July)and normal season(November).The results of sample analysis showed that,50 species of dinoflagellates were identified in 5 orders,13 families and 17 genera,including 25 species of red tide dinoflagellates,of which 13 species were toxic.There were 10 dominant dinoflagellates in the water of seasons,of which 9 were red tide dinoflagellates and 5 were toxic red tide dinoflagellates.The most dominant species of dinoflagellates were Karenia sp.,Peridinium quadridentatum and Heterocapsa circularisquama in dry season,wet season and normal season,respectively.The fluctuations of water environment factors at the same location in the different water seasons were small,and the concentrations of inorganic nitrogen and phosphorus were high at both ends of the Sanya Bay and low at central Sanya Bay.Spearman correlation analysis showed that,NH_(4)^(+)-N、NO_(3)^(-)-N and NO_(2)^(-)-N were the main driving factors affecting the community structure of planktonic dinoflagellate in the coastal waters of Sanya Bay.The results of RDA analysis showed that,the distribution of dominant red tide dinoflagellate in the coastal waters of Sanya Bay was significantly correlated with water temperature,salinity,inorganic nitrogen and phosphorus content.In general,the planktonic dinoflagellates,especially the dominant red tide dinoflagellates,responded most closely to inorganic nitrogen and phosphorus nutrients.In general,results of this study could be used as a supplement to the statistical data on the distribution of planktonic dinoflagellate species in Sanya Bay,and provide basic data for both analyzing the correlation between dinoflagellat

关 键 词：甲藻 水环境因子 赤潮 三亚湾 

分 类 号：X55[环境科学与工程—环境工程]