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Regional disparities of phytoplankton in relation to different water masses in the Northwest Pacific Ocean during the spring and summer of 2017

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Acta Oceanologica Sinica 2020年第6期39卷 107-118页

作者： Gengming Lin Yanghang Chen Jiang Huang Yanguo Wang youyin ye Qingliang Yang Third Institute of Oceanography Ministry of Natural ResourcesXiamen 361005China

The West Pacific Ocean is considered as the provenance center of global marine life and has the highest species diversity of numerous marine *** phytoplankton,as the primary producer at the base of the food chain,effects on climate change,fish resources as well as the entire ***,there are few large-scale surveys covering several currents with different hydrographic *** study aimed to explore the relationships between the spatio-temporal variation in phytoplankton community structure and different water masses.A total of 630 water samples and 90 net samples of phytoplankton were collected at 45 stations in the Northwest Pacific Ocean(21.0°–42.0°N,118.0°–156.0°E)during spring and summer 2017.A total of 281 phytoplankton taxa(>5μm)belonging to 61 genera were identified in the study *** distribution pattern of the phytoplankton community differed significantly both spatially and *** average abundances of phytoplankton in spring and summer were 797.07×10~2 cells/L and 84.94×10~2 cells/L,*** in spring or summer,the maximum abundance always appeared in the northern transition region affected by the Oyashio Current,where nutrients were abundant and diatoms dominated the phytoplankton community;whereas the phytoplankton abundance was very low in the oligotrophic Kuroshio region,and the proportion of dinoflagellates in total abundance increased *** horizontal distribution of phytoplankton abundance increased from low to high latitudes,which was consistent with the trend of nutrient distributions,but contrary to that of water temperature and *** the northern area affected by the Oyashio Current,the phytoplankton abundance was mainly concentrated in the upper 30 m of water column,while the maximum abundance often occurred at depths of 50–75 m in the south-central area affected by the Kuroshio *** correlation and redundancy analysis(RDA)showed that phytoplankton abundance was s

关键词： phytoplankton regional disparity species composition spatial distribution Northwest Pacific Ocean

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An ocean acidification-simulated system and its application in coral physiological studies

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Acta Oceanologica Sinica 2018年第12期37卷 55-62页

作者： ZHENG Xinqing WANG Chenying HADI Tri Aryono ye youyin PAN Ke Third Institute of Oceanography Ministry of Natural Resources Research Center for Oceanography Indonesian Institute of Sciences Institute for Advanced Study Shenzhen University

Due to the elevated atmospheric carbon dioxide, ocean acidification(OA) has recently emerged as a research theme in marine biology due to an expected deleterious effect of altered seawater chemistry on calcification. A system simulating future OA scenario is crucial for OA-related studies. Here, we designed an OA-simulated system(OASys) with three solenoid-controlled CO_2 gas channels. The OASys can adjust the pH of the seawater by bubbling CO_2 gas into seawaters via feedback systems. The OASys is very simple in structure with an integrated design and is new-user friendly with the instruction. Moreover, the OASys can monitor and record real-time pH values and can maintain pH levels within 0.02 pH unit. In a 15-d experiment, the OASys was applied to simulate OA in which the expected target pH values were 8.00, 7.80 and 7.60 to study the calcifying response of Galaxea fascicularis. The results showed daily mean seawater pH values held at pH 8.00±0.01, 7.80±0.01 and 7.61±0.01 over15 d. Correspondingly, the coral calcification of G. fascicularis gradually decreased with reduced pH.

关键词： ocean acidification OASys coral Galaxea fascicularis

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Regional disparities of phytoplankton in relation to environmental factors in the western Arctic Ocean during summer of 2010

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Acta Oceanologica Sinica 2018年第4期37卷 109-120页

作者： LIN Gengming WANG Yanguo CHEN Yanghang ye youyin WANG Yu YANG Qingliang Third Institute of Oceanography State Oceanic Administration

Global warming has caused Arctic sea ice to rapidly retreat,which is affecting phytoplankton,the primary producers at the base of the food chain,as well as the entire ***,few studies with large spatial scales related to the Arctic Basin at high latitude have been *** study aimed to investigate the relationship between changes in phytoplankton community structure and ice *** surface and 41 vertically stratified water samples from the western Arctic Ocean（67.0°–88°26′N,152°–178°54′W） were collected by the Chinese icebreaker R/V Xuelong from July 20 to August 30,2010 during China＇s fourth Arctic *** these samples,the species composition,spatial distribution,and regional disparities of phytoplankton during different stages of ice melt were assessed.A total of 157 phytoplankton taxa（〉5 μm） belonging to 69 genera were identified in the study *** most abundant species were Navicula pelagica and Thalassiosira nordenskioeldii,accounting for 31.23% and 14.12% of the total phytoplankton abundance,*** average abundance during the departure trip and the return trip were 797.07×10~2 cells/L and 84.94×10~2 cells/L,*** highest abundance was observed at Sta.R09 in the north of Herald Shoal,where Navicula pelagica was the dominant species accounting for 59.42% of the *** vertical distribution of phytoplankton abundance displayed regional differences,and the maximum abundances were confined to the lower layers of the euphotic zone near the layers of the halocline,thermocline,and *** species abundance of phytoplankton decreased from the low-latitude shelf to the high-latitude basin on both the departure and return *** phytoplankton community structure in the shallow continental shelf changed markedly during different stages of ice melt,and there was shift in dominant species from centric to pennate *** of canonical correspondence analysis（CCA） showed that there were

关键词： phytoplankton regional disparity species composition spatial distribution western Arctic Ocean

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A new pelagic Polyconchoecia Xiang, Chen and Du, 2018(Ostracoda:Myodocopa:Halocyprididae) from the South China Sea

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Acta Oceanologica Sinica 2020年第4期39卷 73-83页

作者： Peng Xiang Yu Wang Ruixiang Chen youyin ye Chunguang Wang Xiaoyin Chen Mao Lin Laboratory of Marine Biology and Ecology Third Institute of OceanographyMinistry of Natural ResourcesXiamen 361005China Collaborative Innovation Center of Deep Sea Biology Hangzhou 310012China

Halocyprid ostracods are appreciable part of ostracods floating through virtually everywhere in marine *** this study,we describe a new species of genus Polyconchoecia Xiang,Chen and Du,2018,tribe Conchoeciini Chavtur and Angel,2011,family Halocyprididae Dana,1853 from the middle of the South China *** chenii *** very close to *** Xiang,Chen and Du,*** it differs from *** by the distinctions of locations of major glands of carapace and the characteristics of appendages:more posteriorly situated left asymmetric gland of carapace,no right asymmetric gland;segmented frontal organ;the endopod 2 of the first antenna with a very small seta;a-and c-setae of the first antenna with long end joint have long end joint,the b-and d-setae have no end joint,spinose e-seta without end joint;the e-seta of the second antenna is present;teeth side is distinctive;the setal counts of the mandible,maxilla,fifth limb,and sixth limb are *** locations of the major glands on carapace and the characteristics of the first antenna can be the key of the new *** work is the second discovery of the genus Polyconchoecia from the world.

关键词： taxonomy Ostracoda Halocyprididae Conchoeciini Polyconchoecia chenii sp.nov. new species South China Sea

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Community structure and spatial-temporal variation of netzphytoplankton in the Bering Sea in summer

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Acta Oceanologica Sinica 2016年第4期35卷 99-107页

作者： WANG Yu XIANG Peng ye youyin LIN Gengming YANG Qingliang LIN Heshan LIN Mao Laboratory of Marine Biology and Ecology Third Institute of OceanographyState Oceanic Administration

Marine biodiversity is changing in response to altered physical environment, subsequent ecological changes as well as anthropogenic disturbances. In this study, phytoplankton samples in situ collected in the Bering Sea in July of 1999 and 2010 were analyzed to obtain phytoplankton community structure and spatial-temporal variation between the beginning and end of this decade, and the correlation of phytoplankton community dynamics and environmental factors was investigated. A total of 5 divisions, 58 genera and 153 species of phytoplankton belonging to 3 ecological groups were identified. The vast majority of phytoplankton consisted of diatoms accounting for 66.7% of the total species and 95.2% of the total abundance. Considering differentiation in spatial extent and phytoplankton sample types, there were subtle changes in species composition, large altering in abundance and significant variation in spatial distribution between two surveys. The abundance peak area was located at the Bering Strait while sub peak was found at the Bering Sea Basin. The boreal-temperate diatom was the dominant flora, which was subsequently replaced by eurythermal and frigid-water diatom. Phytoplankton community in the Bering Sea was not a simplex uniform community but composed of deep-ocean assemblage and neritic assemblage. The deep-ocean assemblage was located in the northwestern Pacific Ocean and Bering Sea Basin, dominated by boreal-temperate species（Neodenticula seminae, Thalassiothrix longissima, Amphiprora hyperborean, Chaetoceros atlanticus, Thalassiosira trifulta, etc.） and eurychoric species（Thalassionema nitzschioides, Ch. compressus, Rhizosolenia styliformis, etc.）, and characterized by low abundance, even interspecies abundance allocations, diverse dominant species and high species diversity. The neritic assemblage was distributed on the continental shelf and slope of Bering Sea and was mainly composed of frigid-water species（***？ldii, Ch. furcellatus, Ch. socialis

关键词： Bering Sea phytoplankton community structure spatial and temporal variation distribution environment changes

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Water quality comparison and ecological environment assessment during neap-spring tide in nearshore area of Fujian Province

Water quality comparison and ecological environment assessme...

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福建省海洋学会2016年学术年会

作者： Yang Luo Wanmin Ni Liping Jiao Haining Huang youyin ye Third Institute of Oceanography State Oceanic Administration Zhejiang International Studies University

In order to evaluate the potential ecological risks of nearshore area of Fujian Province,four surveys on water quality,marine sediments and marine biological quality at 20 monitoring sites were carried out during the neap-spring tide in the autumn of 2010 and the spring of *** index(H′),uniformity(J′),abundance(d) and dominance(Y) were *** results showed that the background values of heavy metals in the waters were generally low,but eutrophication was *** in the autumn was more severe than in the *** indices of inorganic nitrogen and active phosphate at all monitoring sites in autumn exceeded the quality standard for sea *** average primary productivity of the sea area in the spring was877.3 mgC·m·d,which was higher than that in the autumn(26.60 mgC·m·d).In the research area,there were 4 phyla,97 species of phytoplankton in the sea water in *** composition of dominant species was *** average diversity index H’ in the two seasons was 3.28 and 1.52,*** average abundance d was 0.87 and 0.41,*** community structure of phytoplankton in the spring was unstable,and the marine environment in the autumn was more suitable for the growth of a variety of phytoplankton.

关键词： Water Quality Survey Ecological Assessment Near-shore Eutrophication

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福建6个港湾浮游植物多样性及其与水系的关系

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生物多样性 2017年第3期25卷 285-293页

作者：叶又茵项鹏王雨林茂国家海洋局第三海洋研究所福建厦门361005

本文分析了2010年和2011年春季和秋季于福建宁德、莆田、湄洲、厦门、漳浦和东山等6个港湾采集的浮游植物样品和相关数据。6个港湾共记录浮游植物4门102属206种,种数以硅藻最多,甲藻次之,金藻和蓝藻较少。6个港湾中,种类数最多的为莆田(... 详细信息

本文分析了2010年和2011年春季和秋季于福建宁德、莆田、湄洲、厦门、漳浦和东山等6个港湾采集的浮游植物样品和相关数据。6个港湾共记录浮游植物4门102属206种,种数以硅藻最多,甲藻次之,金藻和蓝藻较少。6个港湾中,种类数最多的为莆田(110种),其次为东山(106种)、厦门(100种)、漳浦(95种)、湄洲(86种),宁德最少(63种)。季节分析表明,春季的浮游植物种数呈北部港湾高于南部的分布态势,秋季反之;春季的浮游植物细胞丰度分布大致为由北部港湾至南部港湾递减,秋季相反。春季多样性指数变化范围在1.15–3.05,最高值出现在东山,最低出现在宁德;秋季多样性指数在2.55–3.65之间,最高值在东山,最低值在厦门。分析认为,浮游植物多样性分布模式受不同水系消长的影响。与历史数据相比,浮游植物总平均丰度较以往上升,优势种排序出现变化,适应高营养盐的种类成为主要优势种。

关键词：浮游植物季节动态空间分布水系变化年际变化多样性指数

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广西中华白海豚栖息地的浮游植物群落生态特征

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应用与环境生物学报 2015年第6期21卷 1162-1169页

作者：王雨项鹏叶又茵林更铭杨清良林茂国家海洋局第三海洋研究所厦门361005

广西三娘湾是中华白海豚（Sousa chinensis）春、秋季的重要栖息地之一,生境现状不容乐观.根据2011年10月（秋）、2012年3月（春）在三娘湾近海15个测站获取的51份浮游植物样品,分析该区浮游植物群落结构与变化,比对毗邻海区分析讨论测... 详细信息

广西三娘湾是中华白海豚（Sousa chinensis）春、秋季的重要栖息地之一,生境现状不容乐观.根据2011年10月（秋）、2012年3月（春）在三娘湾近海15个测站获取的51份浮游植物样品,分析该区浮游植物群落结构与变化,比对毗邻海区分析讨论测区浮游植物与环境因子的关联关系,并从浮游植物角度探讨中华白海豚的生存状态.共鉴定浮游植物4门45属123种（不包括未定种）,群落组成以硅藻为主,其次是甲藻.两季共有优势种1种,10月优势种为旋链角毛藻（Chaetoceros curvisetus）、丹麦细柱藻（Leptocylindrus danicus）、柔弱伪菱形藻（Pseudo-nitzschia delicatissima）、尖刺伪菱形藻（Pseudo-nitzschia pungens）等多个物种;3月则为几内亚藻（Guinardia）的3个物种完全占优势.测区浮游植物平均丰度为222.49×10^3 cells/L,10月比3月约高1倍.10月丰度的表底两层分布一致,3月则不一致.两季浮游植物物种多样性和均匀度总体较好,群落结构处于较完整和稳定状态,但3月群落状态相对较脆弱.与广西毗邻海区相比,本区总物种数目处于中等水平,种类组成与其他海区相似,相同季节的优势种却有大差别.测区10月表层浮游植物丰度与磷酸盐浓度、叶绿素a浓度表现出显著正相关;3月表、底两层的丰度均与水温呈现较好的正相关.尖刺伪菱形藻、夜光藻（Noctiluca scintillans）等赤潮藻在三娘湾均可检出一定丰度,一旦爆发藻华,就可能危及中华白海豚生存.因此为了长期保护濒危物种中华白海豚,除了长期监测其种群外,还应定期调查评估栖息地生境.

关键词：浮游植物群落结构生态特征环境因子中华白海豚广西三娘湾

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南流江河口区春季浮游植物群落结构组成与分布特征

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海洋学报 2017年第10期39卷 111-123页

作者：叶又茵项鹏王磊杨燕燕王雨林茂蓝文陆国家海洋局第三海洋研究所福建厦门361005 广西壮族自治区海洋环境监测中心站广西北海536000

通过2016年3月底现场航次11个站点的调查,应用反相高效液色谱(RP-HPLC)并结合二极管阵列检测器分析技术,分析了春季广西南流江河口区浮游植物光合色素组成,进而由CHEMTAX软件估算全粒级浮游植物的群落结构。结果表明:春季含量较高的浮... 详细信息

通过2016年3月底现场航次11个站点的调查,应用反相高效液色谱(RP-HPLC)并结合二极管阵列检测器分析技术,分析了春季广西南流江河口区浮游植物光合色素组成,进而由CHEMTAX软件估算全粒级浮游植物的群落结构。结果表明:春季含量较高的浮游植物特征光合色素含量以叶绿素b最高,其次为岩黄藻素;浮游植物的优势类群为隐藻,其次为绿藻和硅藻,它们分别平均占据了浮游植物生物量的54.95%、23.36%和17.37%,其他藻类所占比例很低。南流江河口区浮游植物群落结构东西部入海分支有较大差异:东部分支营养盐较西部分支低,隐藻所占生物量比例最高,其次为绿藻和硅藻,浮游植物群结构与分布受营养盐因素影响较大;西部分支营养盐含量明显比东部分支高,绿藻和硅藻的所占比例有所提升,隐藻的生物量所占比则有所下降,浮游植物群落结构与分布受非营养盐因素的影响较大。南流江河口区浮游植物生物量和群落结构除了受营养盐影响外,还与浊度、盐度等密切相关,表明南流江浊度增加已明显影响着生态系统结构与功能,需要密切关注和进一步研究。

关键词：光合色素浮游植物群落结构南流江河口

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颗石藻颗石粒形态的原子力显微观测方法:以赫氏艾密里藻为例

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生物多样性 2016年第7期24卷 847-854页

作者：王雨张会勇项鹏叶又茵林更铭杨清良林茂国家海洋局第三海洋研究所福建厦门361005 泽泉科技有限公司开放实验室上海200333

颗石藻(coccolithophore)作为一种模式生物,在重建古海洋气候和环境以及预测未来全球气候变化中起着很重要的作用,赫氏艾密里藻(Emiliania huxleyi)是颗石藻最为典型的代表种。钙质颗石粒(coccolith)是颗石藻形态分类的主要依据,有着非... 详细信息

颗石藻(coccolithophore)作为一种模式生物,在重建古海洋气候和环境以及预测未来全球气候变化中起着很重要的作用,赫氏艾密里藻(Emiliania huxleyi)是颗石藻最为典型的代表种。钙质颗石粒(coccolith)是颗石藻形态分类的主要依据,有着非常精细和复杂的结构,在样品收集过程中很容易遭到破坏,这是颗石藻鉴定中经常遇到的一个技术问题。国际上还没有统一的颗石藻定量采样和样品分析方法。本文采用原子力显微方法(atomic force microscopy,AFM)对赫氏艾密里藻的颗石粒形态进行了超显微观察研究,获取不同扫描范围的高度图(height image)和形貌图(deflection image)以观测其形态结构,并建立了针对颗石藻的原子力显微样品制备方法。通过离心与膜过滤两种方法收集赫氏艾密里藻,比较后得出了一种简单、快速的适合于观测颗石藻在大气环境成像的样品处理、制备和图像采集方法:3,000–4,000 rpm,20℃离心5 min,收集颗石藻,去除有机杂质后取白色沉淀,将沉淀物悬浮于0.05 M NH_4HCO_3溶液中,悬浮液滴加于盖玻片表面,20℃晾干后于样品台在AFM接触模式(contact mode)下原子级扫描,扫描范围50μm,频率1 Hz,可以得到优质的颗石粒形态图像,有助于颗石藻的分类鉴别。该方法可用于室内不同环境梯度或参数下的颗石粒形态结构及颗石藻藻华的检测与研究。

关键词： Emiliania huxleyi 颗石粒形态特征原子力显微法高度图形貌图

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