Articles | Volume 20, issue 17
https://doi.org/10.5194/bg-20-3667-2023
https://doi.org/10.5194/bg-20-3667-2023
Research article
 | 
13 Sep 2023
Research article |  | 13 Sep 2023

Multiple nitrogen sources for primary production inferred from δ13C and δ15N in the southern Sea of Japan

Taketoshi Kodama, Atsushi Nishimoto, Ken-ichi Nakamura, Misato Nakae, Naoki Iguchi, Yosuke Igeta, and Yoichi Kogure

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Cited articles

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Short summary
Carbon and nitrogen are essential elements for organisms; their stable isotope ratios (13C : 12C, 15N : 14N) are useful tools for understanding turnover and movement in the ocean. In the Sea of Japan, the environment is rapidly being altered by human activities. The 13C : 12C of small organic particles is increased by active carbon fixation, and phytoplankton growth increases the values. The 15N : 14N variations suggest that nitrates from many sources contribute to organic production.
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