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Phytoplankton carbon biomass: Insights from the eastern Indian Ocean
Guo, Shujin1,2,3; Wang, Feng1,4; Liang, Junhua1; Zhang, Kangning1,4; Sun, Xiaoxia1,2,3,4,5
2023-12-01
Source PublicationDEEP-SEA RESEARCH PART I-OCEANOGRAPHIC RESEARCH PAPERS
ISSN0967-0637
Volume202Pages:13
Corresponding AuthorSun, Xiaoxia(xsun@qdio.ac.cn)
AbstractThe study of phytoplankton carbon biomass is limited but has the potential to provide important insights into several oceanographic processes, such as the vertical carbon export and yield from the oceanic food web. In this study, we estimated the carbon biomass of the whole phytoplankton community in the eastern Indian Ocean (EIO) during spring of 2021 using flow cytometry and microscopy. We also examined the effect of physicochemical parameters on the spatial distribution of phytoplankton carbon biomass (phytoplankton-C). In the EIO, the range of phytoplankton-C was between 0.03 and 33.96 mu g C L-1, with picophytoplankton (<= 2 mu m) accounting for 92.41 +/- 8.95% and 89.06 +/- 13.21% of the total phytoplankton-C in the surface and deep chlorophyll maximum (DCM) layer, respectively. Among various phytoplankton groups, Prochlorococcus and picoeukaryotes accounted for a major part of the phytoplankton-C in the EIO, contributing (57 +/- 12%) and (25 +/- 7%) to the depth-integrated carbon biomass, respectively. This was followed by Synechococcus (6 +/- 4%), diatoms (6 +/- 4%) and dinoflagellates (3 +/- 1%). Phytoplankton-C exhibited significant variations in both horizontal and vertical distribution within the study area. Horizontally, the distribution of phytoplankton-C was markedly influenced by physical events in the EIO, such as freshwater inputs in the Bay of Bengal, Wyrtki Jet at the Equator and Southern Equatorial Current in the southern EIO. Vertically, different phytoplankton groups exhibited varying distribution patterns in carbon biomass with increasing depths, primarily due to their diverse responses to the vertical variation of irradiance and nutrients in the water column. The total phytoplankton-C in the surface layer (9.56 +/- 3.01 mu g C L-1) and the DCM layer (9.07 +/- 3.75 mu g C L-1) did not show a significant difference between each other (t-test, p > 0.1, n = 42), indicating that DCM didn't correspond to a phytoplankton-C maximum but rather a physiological adaptation of C: Chl a ratios of phytoplankton cells in the EIO. Therefore, vertical profiles of Chl a should be interpreted with caution when establishing their ecological significance in the study area. The carbon biomass of the entire phytoplankton community in the EIO was reported in this study, which could enhance our understanding of the contribution of different phytoplankton groups to the carbon pool and their role in the biogeochemical cycle in the EIO.
KeywordPhytoplankton carbon Physic-chemical parameters Picophytoplankton Utermo center dot hl phytoplankton Chl a ratio Deep chlorophyll maximum Eastern Indian Ocean
DOI10.1016/j.dsr.2023.104190
Indexed BySCI
Language英语
Funding ProjectStrategic Priority Research Program of the Chinese Academy of Sciences[XDB42000000] ; National Natural Science Foundation of China[32371619] ; International Partnership Program of Chinese Academy of Sciences[133137KYSB20200002] ; International Partnership Program of Chinese Academy of Sciences[121311KYSB20190029] ; Taishan Scholar Project[NORC2021-10] ; NSFC Shiptime Sharing Project[42049910]
WOS Research AreaOceanography
WOS SubjectOceanography
WOS IDWOS:001107001500001
PublisherPERGAMON-ELSEVIER SCIENCE LTD
WOS KeywordTO-CHLOROPHYLL RATIO ; SEASONAL VARIABILITY ; SIZE-STRUCTURE ; GROWTH-RATE ; ATLANTIC ; SEA ; SURFACE ; BAY ; PHOTOACCLIMATION ; BIOVOLUME
Citation statistics
Document Type期刊论文
Identifierhttp://ir.qdio.ac.cn/handle/337002/183928
Collection海洋生态与环境科学重点实验室
Corresponding AuthorSun, Xiaoxia
Affiliation1.Chinese Acad Sci, Inst Oceanol, Jiaozhou Bay Natl Marine Ecosyst Res Stn, Qingdao 266071, Peoples R China
2.Laoshan Lab, Marine Ecol & Environm Sci Lab, Qingdao 266237, Peoples R China
3.Chinese Acad Sci, Ctr Ocean Mega Sci, Qingdao 266071, Peoples R China
4.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
5.Chinese Acad Sci, Inst Oceanol, Jiaozhou Bay Natl Marine Ecosyst Res Stn, 7 Nanhai Rd, Qingdao 266071, Peoples R China
First Author AffilicationInstitute of Oceanology, Chinese Academy of Sciences
Corresponding Author AffilicationInstitute of Oceanology, Chinese Academy of Sciences
Recommended Citation
GB/T 7714
Guo, Shujin,Wang, Feng,Liang, Junhua,et al. Phytoplankton carbon biomass: Insights from the eastern Indian Ocean[J]. DEEP-SEA RESEARCH PART I-OCEANOGRAPHIC RESEARCH PAPERS,2023,202:13.
APA Guo, Shujin,Wang, Feng,Liang, Junhua,Zhang, Kangning,&Sun, Xiaoxia.(2023).Phytoplankton carbon biomass: Insights from the eastern Indian Ocean.DEEP-SEA RESEARCH PART I-OCEANOGRAPHIC RESEARCH PAPERS,202,13.
MLA Guo, Shujin,et al."Phytoplankton carbon biomass: Insights from the eastern Indian Ocean".DEEP-SEA RESEARCH PART I-OCEANOGRAPHIC RESEARCH PAPERS 202(2023):13.
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