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Contribution of Small Phytoplankton to Primary Production in the Northern Bering and Chukchi Seas

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Title
Contribution of Small Phytoplankton to Primary Production in the Northern Bering and Chukchi Seas
Other Titles
북극 척치해와 베링해협에서 일차생산에 대한 작은 식물플랑크톤의 기여
Authors
박정우
김예진
김관우
Amane Fujiwara
Hisatomo Waga
강재중
이상헌
Yang, Eun Jin
Toru Hirawake
Keywords
Bering SeaChukchi SeaHPLCPrimary productionsmall phytoplankton
Issue Date
2022
Citation
박정우, et al. 2022. "Contribution of Small Phytoplankton to Primary Production in the Northern Bering and Chukchi Seas". WATER, 14(2): 235-251.
Abstract
The northern Bering and Chukchi seas are biologically productive regions but, recently, unprecedented environmental changes have been reported. For investigating the dominant phyto plankton communities and relative contribution of small phytoplankton (<2 μm) to the total primary production in the regions, field measurements mainly for high-performance liquid chromatography (HPLC) and size-specific primary productivity were conducted in the northern Bering and Chukchi seas during summer 2016 (ARA07B) and 2017 (OS040). Diatoms and phaeocystis were dominant phytoplankton communities in 2016 whereas diatoms and Prasinophytes (Type 2) were dominant in 2017 and diatoms were found as major contributors for the small phytoplankton groups. For size-specific primary production, small phytoplankton contributed 38.0% (SD = ±19.9%) in 2016 whereas 25.0% (SD = ±12.8%) in 2017 to the total primary productivity. The small phytoplankton con tribution observed in 2016 is comparable to those reported previously in the Chukchi Sea whereas the contribution in 2017 mainly in the northern Bering Sea is considerably lower than those in other arctic regions. Different biochemical compositions were distinct between small and large phytoplankton in this study, which is consistent with previous results. Significantly higher carbon (C) and nitrogen (N) contents per unit of chlorophyll-a, whereas lower C:N ratios were characteristics in small phyto plankton in comparison to large phytoplankton. Given these results, we could conclude that small phytoplankton synthesize nitrogen-rich particulate organic carbon which could be easily regenerated.
URI
https://repository.kopri.re.kr/handle/201206/13439
DOI
http://dx.doi.org/10.3390/w14020235
Type
Article
Station
Araon
Indexed
SCIE
Appears in Collections  
2022-2022, Korea-Arctic Ocean Warming and Response of Ecosystem (22-22) / Yang, Eun Jin (PM22040)
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