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© 2023 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/). Notwithstanding the ProQuest Terms and Conditions, you may use this content in accordance with the terms of the License.

Abstract

Understanding of the primary production of phytoplankton in the Kara Sea (KS), the Laptev Sea (LS), and the East Siberian Sea (ESS) remains limited, despite the recognized importance of phytoplankton in the Arctic Ocean. To address this knowledge gap, we conducted three NABOS (Nansen and Amundsen Basins Observational System) expeditions in 2013, 2015, and 2018 to measure in situ primary production rates using a 13C-15N dual-tracer method and examine their major controlling factors. The main goals in this study were to investigate regional heterogeneity in primary production and derive its contemporary ranges in the KS, LS, and ESS. The daily primary production rates in this study (99 ± 62, 100 ± 77, and 56 ± 35 mg C m−2 d−1 in the KS, LS, and ESS, respectively) are rather different from the values previously reported in each sea mainly because of spatial and regional differences. Among the three seas, a significantly lower primary production rate was observed in the ESS in comparison to those in the KS and LS. This is likely mainly because of regional differences in freshwater content based on the noticeable relationship (Spearman, rs = −0.714, p < 0.05) between the freshwater content and the primary production rates observed in this study. The contemporary ranges of the annual primary production based on this and previous studies are 0.96–2.64, 0.72–50.52, and 1.68–16.68 g C m−2 in the KS, LS, and ESS, respectively. Further intensive field measurements are warranted to enhance our understanding of marine microorganisms and their community-level responses to the currently changing environmental conditions in these poorly studied regions of the Arctic Ocean.

Details

Title
Primary Production in the Kara, Laptev, and East Siberian Seas
Author
Kim, Soohyun 1 ; Kim, Kwanwoo 2 ; Naeun Jo 3   VIAFID ORCID Logo  ; Jang, Hyo-Keun 2 ; So-Hyun Ahn 4 ; Lee, Janghan 5 ; Lee, Howon 6 ; Park, Sanghoon 2   VIAFID ORCID Logo  ; Lee, Dabin 2 ; Stockwell, Dean A 7 ; Whitledge, Terry E 7   VIAFID ORCID Logo  ; Lee, Sang-Heon 2   VIAFID ORCID Logo 

 Department of Oceanography and Marine Research Institute, Pusan National University, Geumjeong-gu, Busan 46241, Republic of Korea; [email protected] (S.K.); [email protected] (K.K.); [email protected] (H.-K.J.); [email protected] (S.P.); [email protected] (D.L.); Library of Marine Samples, Korea Institute of Ocean Science and Technology, Geoje 53201, Republic of Korea 
 Department of Oceanography and Marine Research Institute, Pusan National University, Geumjeong-gu, Busan 46241, Republic of Korea; [email protected] (S.K.); [email protected] (K.K.); [email protected] (H.-K.J.); [email protected] (S.P.); [email protected] (D.L.) 
 Department of Ecology and Conservation, National Marine Biodiversity Institute of Korea, Seocheon 33662, Republic of Korea; [email protected] 
 University of Maryland Center for Environmental Science, Horn Point Laboratory, Cambridge, MD 21613, USA; [email protected] 
 Départment de Biologie, Université Laval, Québec, QC G1V 0A6, Canada; [email protected] 
 Marine Ecosystem Research Center, Korea Institute of Ocean Science and Technology, Busan 49111, Republic of Korea; [email protected] 
 Institute of Marine Science, University of Alaska Fairbanks, Fairbanks, AK 99775, USA; [email protected] (D.A.S.); [email protected] (T.E.W.) 
First page
1886
Publication year
2023
Publication date
2023
Publisher
MDPI AG
e-ISSN
20762607
Source type
Scholarly Journal
Language of publication
English
ProQuest document ID
2857124201
Copyright
© 2023 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/). Notwithstanding the ProQuest Terms and Conditions, you may use this content in accordance with the terms of the License.