摘要
秦皇岛近岸海域是我国有害藻华(harmful algal blooms,HABs)高发区之一,为研究HABs暴发机制(包括HAB物种、时空动态变化以及环境因子相关性)提供了一个理想的实验场所。迄今已有很多研究人员对秦皇岛海域浮游植物和HAB物种进行了长期而系统的航次调查,并获得了丰富的研究成果。为了系统跟踪秦皇岛海域浮游植物及HAB物种组成与分布的变化,对近26年间(1998~2023年)秦皇岛海域涉及浮游植物调查的航次数据进行了系统归纳整理和统计分析,共统计到366种浮游植物,隶属于9门161属,其中以硅藻门(195种)和甲藻门(89种)物种为主。由于不同航次的采样时间、站位和方法不同,不同航次调查到的浮游植物数目、种类也有所差异。尽管有研究报道各海域近几十年存在硅藻逐渐被甲藻取代的演替现象,但在该研究中并未发现支持这一现象的证据。统计表明,研究人员在秦皇岛海域共鉴定到120种HAB物种,隶属于6门56属,包括硅藻门62种,甲藻门46种,棕鞭藻门8种,绿藻2种,蓝藻门1种,定鞭藻门1种。在38个航次调查中,中肋骨条藻出现次数最多,其次分别是新月筒柱藻、丹麦细柱藻、尖刺伪菱形藻和夜光藻等,这些藻同时也作为HAB物种存在。文章将为比较不同海域浮游植物及HAB物种组成,解读宏条形码分析数据等提供重要参考。
The offshore waters of Qinhuangdao are one of the high-incidence areas of harmful algal blooms(HABs)in China,which is an ideal experimental site to study the mechanisms of HAB outbreaks(including the composition of HAB species,spatial and temporal dynamics,and correlation of environmental factors).At present,many researchers have conducted long-term and systematic investigations on phytoplankton and HAB species in Qinhuangdao offshore region and obtained abundant research results.To systematically track the composition and distribution of phytoplankton and HAB species in the area,we systematically summarized and statistically analyzed the data of phytoplankton investigations conducted in Qinhuangdao offshore region in the past 26 years(1998~2023).A total of 366 phytoplankton species have been recorded,belonging to 9 phyla and 161 genera,of which Bacillariophyta(195 species)was the dominant group,followed by Dinoflagellata(89 species).The number and species of investigated phytoplankton varied among sampling times,stations,and methods in different investigations.Although some studies have reported the gradual replacement of Bacillariophyta by Dinoflagellata as a succession phenomenon in recent decades in various sea areas,no evidence supporting this phenomenon was found in this study.Statistics shows that researchers identified a total of 120 HAB species in the Qinhuangdao offshore region,belonging to 6 phyla and 56 genera,including 62 species of Bacillariophyta,46 species of Dinoflagellata,8 species of Ochrophyta,2 species of Chlorophyta,1 species of Cyanobacteria,and 1 species of Haptophyta.Among earlier 38 marine investigations,Skeletonema costatum was the most frequently observed,followed by Cylindrotheca closterium,Leptocylindrus danicus,Pseudo-nitzschia pungens,and Noctiluca scintillans,all of them were also HAB species.This study provided an important reference for comparing in composition between phytoplankton and HAB species in different sea areas and interpreting the metabarcoding analysis data.
作者
陈楠生
杜海娜
刘淑雅
陈阳
CHEN Nan-Sheng;DU Hai-Na;LIU Shu-Ya;CHEN Yang(Laboratory of Marine Ecology and Environmental Sciences,Institute of Oceanology,Chinese Academy of Sciences,Qingdao 266071,China;Laboratory for Marine Ecology and Environmental Science,Qingdao Marine Science and Technology Center,Qingdao 266200,China;Center for Ocean Mega-Science,Chinese Academy of Sciences,Qingdao 266071,China;College of Marine Sciences,University of Chinese Academy of Sciences,Beijing 100039,China;Research Center for Marine Science,Hebei Normal University of Science and Technology,Qinhuangdao 066004,China)
出处
《海洋与湖沼》
北大核心
2025年第6期1323-1336,共14页
Oceanologia Et Limnologia Sinica
基金
国家自然科学基金项目,42176162号
河北省高等学校科学技术研究项目,QN2023194号。
关键词
秦皇岛海域
航次调查
生物多样性
浮游植物
有害藻华物种
Qinhuangdao offshore region
marine investigation
biodiversity
phytoplankton
harmful algal bloom species
