Picophytoplankton in the West Pacific Ocean: A Snapshot

doi:10.3389/fmicb.2022.811227

IOCAS-IR > 海洋环流与波动重点实验室

	Picophytoplankton in the West Pacific Ocean: A Snapshot
	Wang, Feng3,4 ; Wei, Yuqiu 3,5; Zhang, Guicheng 3; Zhang, Linlin 4,6; Sun, Jun 1,2,3
	2022-03-22
发表期刊	FRONTIERS IN MICROBIOLOGY
卷号	13 页码:13
通讯作者	Sun, Jun([email protected])
摘要	Marine picophytoplankton have crucial ecological value and make an important contribution to marine primary productivity. While biomass of phytoplankton in general is projected to decline as a result of global warming, picophytoplankton will likely dominate in the future oceans due to their growth advantages in an oligotrophic environment. To better understand the biography of picophytoplankton, we undertook a comprehensive study of the distribution patterns of picophytoplankton, carbon biomass, and Chl a concentrations, etc. based on large-scale sampling in the tropical Western Pacific Ocean. In terms of cellular abundance, Prochlorococcus was the most abundant group (averaging [1.03 +/- 0.40] x 10(4) cells/mL), followed by Synechococcus (averaging [1.31 +/- 1.22] x 10(3) cells/mL) and then picoeucaryote (averaging [4.83 +/- 2.84] x 10(2) cells/mL). The picophytoplankton size-fractionated chlorophyll a (Pico-Chl a) accounted for about 30% of the total Chl a, with Prochlorococcus and picoeukaryotes contributing 41 and 35%, respectively, of the Pico-Chl a-normalized carbon biomass, indicating the ecological importance of picophytoplankton as the primary producers. In terms of biogeographic distribution, the picophytoplankton communities exhibited contrasting patterns. The surface distribution of Prochlorococcus and Synechococcus was concentrated in the low latitude of the 142 degrees E section, while picoeucaryote was more abundant near the 130 degrees E and equator sections. Synechococcus was higher in the shallow layer at 25 m, and it was extremely tolerant of high-light irradiation, while Prochlorococcus and picoeucaryote were distributed in the deep Chlorophyll maximum layer (DCM) (about 100 m). From the carbon-to-Chlorophyll a ratios, which was derived from Prochlorococcus and picoeucaryote population groups, we found that the ratio varied widely, from 0.19 to 75.56, and was highest at the depth of 200 m. Of these, Prochlorococcus had an important contribution. The correlation analysis of environmental factors showed that Prochlorococcus, Synechococcus, and picoeucaryote were negatively correlated with nutrient concentration. We concluded that Prochlorococcus group was dominant in the WPO, both in abundance and biomass, and the various abiotic factors such as temperature, salinity, and nutrient concentrations were closely correlated with the spatial variation in the picophytoplankton community. These findings aid our understanding of how contrasting environmental conditions influence picophytoplankton community and the importance of picophytoplankton in contributing the carbon pool in the oligotrophic ocean.
关键词	picophytoplankton carbon-to-Chlorophyll a environmental factors Western Pacific Ocean abundance
DOI	10.3389/fmicb.2022.811227
收录类别	SCI
语种	英语
资助项目	National Natural Science Foundation of China[41876134]; National Natural Science Foundation of China[41676112]; Changjiang Scholar Program of Chinese Ministry of Education[T2014253]; open research cruise[NORC2019-09]; NSFC Shiptime Sharing Project[41849909]; Major Project of Science and Technology Innovation of Shan Dong[2018SDKJ0105]
WOS研究方向	Microbiology
WOS类目	Microbiology
WOS记录号	WOS:000780690300001
出版者	FRONTIERS MEDIA SA
引用统计	被引频次：5[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.qdio.ac.cn/handle/337002/178811
专题	海洋环流与波动重点实验室
通讯作者	Sun, Jun
作者单位	1.China Univ Geosci Wuhan, State Key Lab Biogeol & Environm Geol, Wuhan, Peoples R China 2.China Univ Geosci Wuhan, Coll Marine Sci & Technol, Wuhan, Peoples R China 3.Tianjin Univ Sci & Technol, Res Ctr Indian Ocean Ecosyst, Tianjin, Peoples R China 4.Chinese Acad Sci, Inst Oceanol, Key Lab Ocean Circulat & Waves, Qingdao, Peoples R China 5.Chinese Acad Fishery Sci, Yellow Sea Fisheries Res Inst, Qingdao, Peoples R China 6.Pilot Natl Lab Marine Sci & Technol Qingdao, Qingdao, Peoples R China
推荐引用方式 GB/T 7714	Wang, Feng,Wei, Yuqiu,Zhang, Guicheng,et al. Picophytoplankton in the West Pacific Ocean: A Snapshot[J]. FRONTIERS IN MICROBIOLOGY,2022,13:13.
APA	Wang, Feng,Wei, Yuqiu,Zhang, Guicheng,Zhang, Linlin,&Sun, Jun.(2022).Picophytoplankton in the West Pacific Ocean: A Snapshot.FRONTIERS IN MICROBIOLOGY,13,13.
MLA	Wang, Feng,et al."Picophytoplankton in the West Pacific Ocean: A Snapshot".FRONTIERS IN MICROBIOLOGY 13(2022):13.

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