| Item type |
学術雑誌論文 / Journal Article(1) |
| 公開日 |
2024-02-08 |
| タイトル |
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タイトル |
Multiple nitrogen sources for primary production inferred from δ13C and δ15N in the southern Sea of Japan |
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言語 |
en |
| 言語 |
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言語 |
eng |
| 資源タイプ |
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資源タイプ識別子 |
http://purl.org/coar/resource_type/c_6501 |
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資源タイプ |
journal article |
| アクセス権 |
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アクセス権 |
open access |
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アクセス権URI |
http://purl.org/coar/access_right/c_abf2 |
| 著者 |
児玉, 武稔
西本, 篤史
中村, 賢一
| en |
Nakamua, Ken-ichi
Japan Fisheries Research and Education Agency
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| ja |
中村, 賢一
水産研究・教育機構（退職）
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| ja-Kana |
ナカムラ, ケンイチ
|
Search repository
中江, 美里
井口, 直樹
井桁, 庸介
木暮, 陽一
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| 抄録 |
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内容記述タイプ |
Abstract |
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内容記述 |
Carbon and nitrogen dynamics in the Sea of Japan (SOJ) are rapidly changing. Here, we investigated the carbon and nitrogen isotope ratios of particulate organic matter (δ13CPOM and δ15NPOM, respectively) at the depth of ≤ 100 m in the southern part of the SOJ from 2016 to 2021. Both δ13CPOM and δ15NPOM exhibited multimodal distributions and were classified into four classes (I–IV) according to the Gaussian mixed model. Most of the samples were categorized into class II (n = 441), with the mean ± standard deviation (SD) of δ13CPOM and δ15NPOM of −23.7 ± 1.2 ‰ and 3.1 ± 1.2 ‰, respectively. Class I was characterized by low δ15NPOM (−2.1 ± 0.8 ‰, n = 11), class III by low δ13CPOM (−27.1 ± 1.0 ‰, n = 21), and class IV by high δ13CPOM (−20.7 ± 0.8 ‰, n = 34). Most of the class I samples were observed winter, and had similar temperature and salinity, and these indicated the Japanese local rivers' contributions to the class I formation. According to the generalized linear model (GLM), temperature and chlorophyll-a concentration all positively affected δ13CPOM, thus corroborating the hypothesis that active photosynthesis and phytoplankton growth increased δ13CPOM. However, the δ15NPOM variation was attributed to the temperature and salinity, not to nitrate concentration. To explain these unique δ15NPOM variations, a hypothesis is reasonable that multiple nitrate sources originated such as East China Sea, Kuroshio and the Japanese local rivers contribute to the primary production in the SOJ. |
|
言語 |
en |
| 書誌情報 |
en : Biogeosciences
巻 20,
号 17,
p. 3667-3682,
ページ数 16,
発行日 2023-09-13
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| 出版者 |
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出版者 |
The Biogeographical Society of Japan |
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言語 |
en |
| 出版者 |
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出版者 |
日本生物地理学会 |
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言語 |
ja |
| ISSN |
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収録物識別子タイプ |
PISSN |
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収録物識別子 |
0067-8716 |
| DOI |
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識別子タイプ |
DOI |
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関連識別子 |
10.5194/bg-20-3667-2023 |
| 権利 |
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言語 |
en |
|
権利情報 |
Authors |
| 情報源 |
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関連タイプ |
isIdenticalTo |
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識別子タイプ |
Local |
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関連識別子 |
23342000 |
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言語 |
ja |
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関連名称 |
水産技術研究所 環境・応用部門 沿岸生態システム部 |
| 関連サイト |
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関連タイプ |
isIdenticalTo |
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識別子タイプ |
URI |
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関連識別子 |
https://bg.copernicus.org/articles/20/3667/2023/ |
| 著者版フラグ |
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出版タイプ |
VoR |
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出版タイプResource |
http://purl.org/coar/version/c_970fb48d4fbd8a85 |
23342000.pdf (6.9 MB)
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