Carbon and nitrogen stable isotope ratios of particulate organic matter in the southern Sea of Japan from 2018 to 2021


Carbon and nitrogen stable isotope ratio of particulate organic matter (POM) was collected in the surface layer of the southern Sea of Japan. 0.9–11.5 L of seawater was filtered using a pre-combusted (450 °C, 6 h) glass fiber filter (GF/F, Whatman), and the carbon and nitrogen isotopic ratios were measured using an Isoprime 100 isotopic ratio mass spectrometer (Elementar, Langenselbold, Germany). The carbon: nitrogen ratio (C: N ratio) of POM occasionally showed outlier values. Therefore, the means and standard deviations (SDs) of the C: N ratio were calculated, and samples whose C: N ratio differed by > 3 × SD from the mean value were eliminated. With the POM, temperature, salinity, chlorophyll a concentration, and nutrient concentrations were measured.

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Metadata Access
Creator Kodama, Taketoshi ORCID logo; Nishimoto, Atsushi; Nakamura, Ken-ichi; Nakae, Misato; Iguchi, Naoki; Igeta, Yosuke; Kogure, Yoichi
Publisher PANGAEA
Publication Year 2023
Funding Reference Japan Society for the Promotion of Science Crossref Funder ID 16K07831 Disturbances of plankton and benthic ecosystems in the coastal area of the Japan Sea with the coastal jets; Japan Society for the Promotion of Science Crossref Funder ID 19K06198 JSPS KAKENHI; Japan Society for the Promotion of Science Crossref Funder ID 23H02285 Comparative biological oceanography between the Tsushima Warm Current and the Kuroshio
Rights Creative Commons Attribution 4.0 International;
OpenAccess true
Resource Type Dataset
Format text/tab-separated-values
Size 6150 data points
Discipline Design; Fine Arts, Music, Theatre and Media Studies; Humanities
Spatial Coverage (131.252W, 35.001S, 139.833E, 41.003N); Sea of Japan
Temporal Coverage Begin 2016-07-24T20:40:00Z
Temporal Coverage End 2021-07-24T13:02:00Z