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Diversity and geographical distribution of haptophyte Phaeocystis in the chinese seas based on metabarcoding analysis

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Journal of Oceanology and Limnology 2023年第6期41卷 2197-2207页

作者： Qingshang SONG Yue XUE Yanying ZHANG Jiehui YIN Pingping SHEN Ocean School Yantai UniversityYantai 264005China

Phaeocystis is an important bloom-forming species and over 100 blooms have occurred since 1997 along the chinese coasts,while only the species *** was *** this project,a total of 246 phytoplankton samples collected from the Bohai Sea,the Yellow Sea,and the East China Sea in April 2021 were analyzed to evaluate the species diversity and geographical distribution of the genus Phaeocystis based on metabarcoding 18S r DNA *** described Phaeocystis species were recognized,including ***,***,***,and ***,and each has distinguished geographical distribution *** was the most widespread and abundant species,and *** was found in the Bohai Sea and the northern Yellow Sea with substantially elevated *** was also a widespread species,but its abundance was relatively low,while *** gathered only in the southeastern East China *** temperature,phosphate as well as ammonium contents were found to be associated with the abundance of ***,***,and *** ***,two uncharacterized Phaeocystis species were detected in the chinese seas,indicating the diversity of the genus remains underestimated worldwide.

关键词： Haptophyta Phaeocystis species diversity distribution chinese seas amplicon sequence variant

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Dynamics of Dimethylsulfide and Dimethylsulfoniopropionate Produced by Phytoplankton in the chinese seas - Distribution Patterns and Affecting Factors

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Acta Botanica Sinica 2003年第7期45卷 774-786页

作者：焦念志柳成章洪华生原田茂树越川海渡边正孝厦门大学环境科学中心海洋环境教育部重点实验室厦门361005 中国科学院海洋研究所青岛66071 日本国立环境研究所筑波日本3050053

Distribution of dimethylsulfide (DMS) and/or particulate dimethylsulfoniopropionate (DMSPp) concentrations in the Jiaozhou Bay, Zhifu Bay and East China Sea were investigated during the period of 1994 - 1998. Both DMS and DMSPp levels showed remarkable temporal and spatial variations. High values occurred in the coastal or shelf waters and low values in the offshore waters. The highest levels were observed in spring or summer and lowest in autumn. DMS or DMSPp distribution patterns were associated with water mass on a large geographical scale, while biological and chemical factors were more likely influential on smaller-scale variations. Diatoms could play an important role in total DMS or DMSPp abundance in coastal waters. Nitrate was found to have a two-phase relationship with DMSPp concentrations: positive when nitrate concentration was lower than 1 mumol/L, and negative when it was above. Anthropogenic factors such as sewage input and aquaculture also showed influences on DMS or DMSPp concentration.

关键词： dimethylsulfide (DMS) particulate dimethylsulfoniopropionate (DMSPp) nitrogen diatoms chinese seas

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A new record of blue-spotted seabream Pagrus caeruleostictus from chinese coastal waters documented from morphology and DNA barcoding

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chinese Journal of Oceanology and Limnology 2015年第2期33卷 500-505页

作者：陈咏霞刘静吴仁协 College of Life Sciences Hebei University Laboratory of Marine Organism Taxonomy and Phylogeny Institute of OceanologyChinese Academy of Sciences College of Fisheries Guangdong Ocean University

A new record of Pagrus caeruleostictus(Valenciennes,1830),collected from the Beibu Gulf,South China Sea in April 2013,was documented based on morphology and cytochrome oxidase I subunit(COI) gene barcoding analyses. It can be distinguished by a combination of the following characteristics: head scaled to above eyes; cheeks with 5 or 6 rows of scales; lateral line scales 51–52; 5 rows of scales above the lateral line; 4 and 6 cuspidate teeth in front of upper and lower jaws,respectively,followed by 2 rows of blunter teeth posteriorly; gill rakers on first arch 12 to 15; D XI–XII +9–11; A III +8–9; the first two dorsal spines very short,the third to fifth extended,filamentous in the young; the first pelvic ray filamentous; silvery pink with dark blue spots on back and sides; caudal fin pinkish; other fins bluish or pinkish; the blue spots generally disappear in large specimens. The present report of P. caeruleostictus suggests that its distribution in chinese coastal waters may be attributed to human effort,since this species is unlikely to have expanded naturally from the eastern Atlantic to the South China Sea,with no other records from the Indian or Pacific Oceans. We recommend that a precautionary approach should be adopted for the management of P. caeruleostictus.

关键词： Sparidae Pagrus caeruleostietus cytochrome oxidase I subunit (COI) chinese seas

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Modeling of Dust Flux to Oceans from Asian Continent

Modeling of Dust Flux to Oceans from Asian Continent

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第三届中日韩气象学术会议

作者： Shen Yanbo~(1,2) Shi Guangyu~2 (1.Laboratory for Climate Studies,National Climate Center,Center for Wind and Solar Energy Resources Assessment,China Meteorological Administration,Beijing,100081 2.State Key Laboratory of Numerical Modeling for Atmospheric Sciences and Geophysical Fluid Dynamics(LASG),Institute of Atmospheric Physics,chinese Academy Sciences,Beijing,100029)

＜正＞Plenty of dust aerosols are blown into atmosphere during the frequent Asian dust *** aerosols have not only direct and indirect climate effects through radiative processes,but also have important influences on the oceanic environment. As dust aerosols carrying nutriments like Fe fall into ocean,they will facilitate oceanic primary *** change in oceanic primary productivities will then cause the change in the flux ofradiatively active gases between ocean and atmosphere and result in the climate change *** the studying of these profound items, estimation of dust flux into oceans is an important *** this report,two schemes and relative observation data are combined to study the dust deposition flux and amount into seas near China from Asian continent during the spring of 2006.

关键词： Dust aerosol chinese seas Deposition Flux Numerical simulation Aerosol Optical Depth

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