Phytoplankton Distributions in the Kuroshio-Oyashio Region of the Northwest Pacific Ocean: Implications for Marine Ecology and Carbon Cycle
The Northwest Pacific Ocean (NWPO) is a significant sink for atmospheric CO2 but a paucity of large-scale phytoplankton surveys in the upper and lower euphotic zone results in uncertainties in estimates of the efficiency of the biological carbon pump there. Here, we report the spatial distribution o...
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| Format: | Article |
| Language: | English |
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Frontiers Media S.A.
2022-05-01
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| Series: | Frontiers in Marine Science |
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| Online Access: | https://www.frontiersin.org/articles/10.3389/fmars.2022.865142/full |
| _version_ | 1818268860824944640 |
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| author | Yaoyao Wang Yaoyao Wang Rong Bi Rong Bi Jing Zhang Jing Zhang Jing Zhang Jiawei Gao Jiawei Gao Shigenobu Takeda Yoshiko Kondo Fajin Chen Gui’e Jin Gui’e Jin Julian P. Sachs Julian P. Sachs Meixun Zhao Meixun Zhao |
| author_facet | Yaoyao Wang Yaoyao Wang Rong Bi Rong Bi Jing Zhang Jing Zhang Jing Zhang Jiawei Gao Jiawei Gao Shigenobu Takeda Yoshiko Kondo Fajin Chen Gui’e Jin Gui’e Jin Julian P. Sachs Julian P. Sachs Meixun Zhao Meixun Zhao |
| author_sort | Yaoyao Wang |
| collection | DOAJ |
| description | The Northwest Pacific Ocean (NWPO) is a significant sink for atmospheric CO2 but a paucity of large-scale phytoplankton surveys in the upper and lower euphotic zone results in uncertainties in estimates of the efficiency of the biological carbon pump there. Here, we report the spatial distribution of lipid biomarkers from diatoms (brassicasterol/epi-brassicasterol), dinoflagellates (dinosterol), and haptophytes (C37 alkenones) as proxies of phytoplankton biomass and community structure in suspended particles from the surface and deep chlorophyll maximum (DCM) layers across low- and mid-latitude regions of the NWPO. Our observations suggest that these lipid biomarkers can be used as indicators of the vertical distributions of phytoplankton biomass, which was comparable between the surface and DCM layers. Water masses with different nutrient concentrations strongly controlled the variations of lipid biomarkers, showing high biomass and the dominance of diatoms in the eutrophic Oyashio region, whereas low biomass and high proportions of dinoflagellates and haptophytes occurred in the oligotrophic Kuroshio region. Diatoms predominated in the DCM, likely enhancing carbon sequestration in the deep ocean and in sediments. Our results quantitatively demonstrate the horizontal and vertical variations of phytoplankton biomass and community structure, leading to an improved understanding of ecosystem function and biogeochemical cycles in this important region of the NWPO. |
| first_indexed | 2024-12-12T20:45:12Z |
| format | Article |
| id | doaj.art-af0672a3f8244ed0be0ffb7b9cd2a9f2 |
| institution | Directory Open Access Journal |
| issn | 2296-7745 |
| language | English |
| last_indexed | 2024-12-12T20:45:12Z |
| publishDate | 2022-05-01 |
| publisher | Frontiers Media S.A. |
| record_format | Article |
| series | Frontiers in Marine Science |
| spelling | doaj.art-af0672a3f8244ed0be0ffb7b9cd2a9f22022-12-22T00:12:36ZengFrontiers Media S.A.Frontiers in Marine Science2296-77452022-05-01910.3389/fmars.2022.865142865142Phytoplankton Distributions in the Kuroshio-Oyashio Region of the Northwest Pacific Ocean: Implications for Marine Ecology and Carbon CycleYaoyao Wang0Yaoyao Wang1Rong Bi2Rong Bi3Jing Zhang4Jing Zhang5Jing Zhang6Jiawei Gao7Jiawei Gao8Shigenobu Takeda9Yoshiko Kondo10Fajin Chen11Gui’e Jin12Gui’e Jin13Julian P. Sachs14Julian P. Sachs15Meixun Zhao16Meixun Zhao17Frontiers Science Center for Deep Ocean Multispheres and Earth System, and Key Laboratory of Marine Chemistry Theory and Technology, Ministry of Education, Ocean University of China, Qingdao, ChinaLaboratory for Marine Ecology and Environmental Science, Qingdao National Laboratory for Marine Science and Technology, Qingdao, ChinaFrontiers Science Center for Deep Ocean Multispheres and Earth System, and Key Laboratory of Marine Chemistry Theory and Technology, Ministry of Education, Ocean University of China, Qingdao, ChinaLaboratory for Marine Ecology and Environmental Science, Qingdao National Laboratory for Marine Science and Technology, Qingdao, ChinaFrontiers Science Center for Deep Ocean Multispheres and Earth System, and Key Laboratory of Marine Chemistry Theory and Technology, Ministry of Education, Ocean University of China, Qingdao, ChinaLaboratory for Marine Ecology and Environmental Science, Qingdao National Laboratory for Marine Science and Technology, Qingdao, ChinaFaculty of Science, University of Toyama, Toyama, JapanFrontiers Science Center for Deep Ocean Multispheres and Earth System, and Key Laboratory of Marine Chemistry Theory and Technology, Ministry of Education, Ocean University of China, Qingdao, ChinaLaboratory for Marine Ecology and Environmental Science, Qingdao National Laboratory for Marine Science and Technology, Qingdao, ChinaGraduate School of Fisheries and Environmental Sciences, Nagasaki University, Nagasaki, JapanGraduate School of Fisheries and Environmental Sciences, Nagasaki University, Nagasaki, JapanCollege of Ocean and Meteorology, Guangdong Ocean University, Zhanjiang, ChinaFrontiers Science Center for Deep Ocean Multispheres and Earth System, and Key Laboratory of Marine Chemistry Theory and Technology, Ministry of Education, Ocean University of China, Qingdao, ChinaLaboratory for Marine Ecology and Environmental Science, Qingdao National Laboratory for Marine Science and Technology, Qingdao, ChinaFrontiers Science Center for Deep Ocean Multispheres and Earth System, and Key Laboratory of Marine Chemistry Theory and Technology, Ministry of Education, Ocean University of China, Qingdao, ChinaSchool of Oceanography, University of Washington, Seattle, WA, United StatesFrontiers Science Center for Deep Ocean Multispheres and Earth System, and Key Laboratory of Marine Chemistry Theory and Technology, Ministry of Education, Ocean University of China, Qingdao, ChinaLaboratory for Marine Ecology and Environmental Science, Qingdao National Laboratory for Marine Science and Technology, Qingdao, ChinaThe Northwest Pacific Ocean (NWPO) is a significant sink for atmospheric CO2 but a paucity of large-scale phytoplankton surveys in the upper and lower euphotic zone results in uncertainties in estimates of the efficiency of the biological carbon pump there. Here, we report the spatial distribution of lipid biomarkers from diatoms (brassicasterol/epi-brassicasterol), dinoflagellates (dinosterol), and haptophytes (C37 alkenones) as proxies of phytoplankton biomass and community structure in suspended particles from the surface and deep chlorophyll maximum (DCM) layers across low- and mid-latitude regions of the NWPO. Our observations suggest that these lipid biomarkers can be used as indicators of the vertical distributions of phytoplankton biomass, which was comparable between the surface and DCM layers. Water masses with different nutrient concentrations strongly controlled the variations of lipid biomarkers, showing high biomass and the dominance of diatoms in the eutrophic Oyashio region, whereas low biomass and high proportions of dinoflagellates and haptophytes occurred in the oligotrophic Kuroshio region. Diatoms predominated in the DCM, likely enhancing carbon sequestration in the deep ocean and in sediments. Our results quantitatively demonstrate the horizontal and vertical variations of phytoplankton biomass and community structure, leading to an improved understanding of ecosystem function and biogeochemical cycles in this important region of the NWPO.https://www.frontiersin.org/articles/10.3389/fmars.2022.865142/fulllipid biomarkersphytoplanktondeep chlorophyll maximumnutrientsKuroshio currentOyashio current |
| spellingShingle | Yaoyao Wang Yaoyao Wang Rong Bi Rong Bi Jing Zhang Jing Zhang Jing Zhang Jiawei Gao Jiawei Gao Shigenobu Takeda Yoshiko Kondo Fajin Chen Gui’e Jin Gui’e Jin Julian P. Sachs Julian P. Sachs Meixun Zhao Meixun Zhao Phytoplankton Distributions in the Kuroshio-Oyashio Region of the Northwest Pacific Ocean: Implications for Marine Ecology and Carbon Cycle Frontiers in Marine Science lipid biomarkers phytoplankton deep chlorophyll maximum nutrients Kuroshio current Oyashio current |
| title | Phytoplankton Distributions in the Kuroshio-Oyashio Region of the Northwest Pacific Ocean: Implications for Marine Ecology and Carbon Cycle |
| title_full | Phytoplankton Distributions in the Kuroshio-Oyashio Region of the Northwest Pacific Ocean: Implications for Marine Ecology and Carbon Cycle |
| title_fullStr | Phytoplankton Distributions in the Kuroshio-Oyashio Region of the Northwest Pacific Ocean: Implications for Marine Ecology and Carbon Cycle |
| title_full_unstemmed | Phytoplankton Distributions in the Kuroshio-Oyashio Region of the Northwest Pacific Ocean: Implications for Marine Ecology and Carbon Cycle |
| title_short | Phytoplankton Distributions in the Kuroshio-Oyashio Region of the Northwest Pacific Ocean: Implications for Marine Ecology and Carbon Cycle |
| title_sort | phytoplankton distributions in the kuroshio oyashio region of the northwest pacific ocean implications for marine ecology and carbon cycle |
| topic | lipid biomarkers phytoplankton deep chlorophyll maximum nutrients Kuroshio current Oyashio current |
| url | https://www.frontiersin.org/articles/10.3389/fmars.2022.865142/full |
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