Ocean Science
Ocean Science
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Articles | Volume 18, issue 2
Articles | Volume 18, issue 2
https://doi.org/10.5194/os-18-295-2022
© Author(s) 2022. This work is distributed under
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/os-18-295-2022
© Author(s) 2022. This work is distributed under
the Creative Commons Attribution 4.0 License.
Articles | Volume 18, issue 2
Research article
 | 
07 Mar 2022
Research article |  | 07 Mar 2022

Carbon and nitrogen dynamics in the coastal Sea of Japan inferred from 15 years of measurements of stable isotope ratios of Calanus sinicus

Ken-ichi Nakamura, Atsushi Nishimoto, Saori Yasui-Tamura, Yoichi Kogure, Misato Nakae, Naoki Iguchi, Haruyuki Morimoto, and Taketoshi Kodama

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Latest update: 28 Oct 2025
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Short summary
The Sea of Japan, surrounding Russia, the Korean Peninsula, and the Japanese Archipelago, is one of the most rapidly changing seas in the world. We measured carbon and nitrogen isotope ratios of zooplankton. We determined that the carbon stable isotope ratio has been decreasing over 15 years, and this trend was comparable to or slightly more rapid than the Suess effect, which is a signal of anthropogenic disturbance. Therefore, carbon dynamics are changing in the shallow coastal waters.
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