Nanophytoplankton and microphytoplankton in the western tropical Pacific Ocean: its community structure, cell size and carbon biomass

Frontiers in Marine Science

Marine Science

Feng Wang¹  Zhuo Chen²  Linlin Zhang³  Wenzhuo Yan⁴  Guicheng Zhang⁴  Jun Sun⁵ 

[1] Institute for Advanced Marine Research, China University of Geosciences, Guangzhou, China;Key Laboratory of Ocean Circulation and Waves, Institute of Oceanology, Chinese Academy of Sciences, Qingdao, China;Laboratory for Marine Ecology and Environmental Science, Pilot National Laboratory for Marine Science and Technology, Qingdao, China;Institute for Advanced Marine Research, China University of Geosciences, Guangzhou, China;State Key Laboratory of Biogeology and Environmental Geology, China University of Geosciences (Wuhan), Wuhan, China;College of Marine Science and Technology, China University of Geosciences (Wuhan), Wuhan, China;Key Laboratory of Ocean Circulation and Waves, Institute of Oceanology, Chinese Academy of Sciences, Qingdao, China;Laboratory for Marine Ecology and Environmental Science, Pilot National Laboratory for Marine Science and Technology, Qingdao, China;Research Centre for Indian Ocean Ecosystem, Tianjin University of Science and Technology, Tianjin, China;Institute for Advanced Marine Research, China University of Geosciences, Guangzhou, China;Research Centre for Indian Ocean Ecosystem, Tianjin University of Science and Technology, Tianjin, China;Institute for Advanced Marine Research, China University of Geosciences, Guangzhou, China;State Key Laboratory of Biogeology and Environmental Geology, China University of Geosciences (Wuhan), Wuhan, China;College of Marine Science and Technology, China University of Geosciences (Wuhan), Wuhan, China;

关键词: phytoplankton;    species composition;    carbon biomass;    cell size;    environmental factors;    quantile regression;   

DOI  :  10.3389/fmars.2023.1147271

 received in 2023-01-18, accepted in 2023-04-04,  发布年份 2023

来源: Frontiers

【 摘 要 】

Phytoplankton, as a crucial component of the marine ecosystem, plays a fundamental role in global biogeochemical cycles. This study investigated the composition and distribution of phytoplankton in the western Tropical Pacific Ocean using the Utermöhl method and carbon volume conversion. We identified four primary groups of phytoplankton: dinoflagellates (181 species), diatoms (73 species), cyanobacteria (4 species), and chrysophyceae (2 species). The clustering analysis classified phytoplankton into four groups based on their composition, which were found to be closely related to ocean currents. Diatoms were highly abundant in areas influenced by current-seamount interaction. In contrast, areas with little influence from ocean currents were dominated by Trichodesmium. The majority of phytoplankton had an equivalent spherical diameter (ESD) of 2-12 μm, with a few exceeding 25 μm. Although nanophytoplankton (ESD = 2-20 µm) dominated cell abundance, microphytoplankton (ESD = 20-200 µm) contributed significantly to carbon biomass (792.295 mg m-3). This study yielded valuable insights into the distribution and composition of phytoplankton in the western tropical Pacific Ocean, shedding light on the relationship between species distribution and ocean currents. In addition, it provided fundamental information regarding cell size and carbon biomass within the region.

【 授权许可】

Unknown   
Copyright © 2023 Yan, Chen, Zhang, Wang, Zhang and Sun