| Item type |
文献 / Documents(1) |
| 公開日 |
2022-08-09 |
| アクセス権 |
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|
アクセス権 |
open access |
| 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 |
|
資源タイプ |
journal article |
| 出版社版DOI |
|
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|
関連識別子 |
https://doi.org/10.1002/ecs2.2365 |
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|
関連名称 |
10.1002/ecs2.2365 |
| 出版タイプ |
|
|
出版タイプ |
VoR |
|
出版タイプResource |
http://purl.org/coar/version/c_970fb48d4fbd8a85 |
| タイトル |
|
|
タイトル |
Utility of Nd isotope ratio as a tracer of marine animals : regional variation in coastal seas and causal factors |
| 著者 |
齋藤, 有
ナカノ, タカノリ
Shin, Ki-Cheol
マツバヤシ, ジュン
カトウ, ヨシカズ
アマカワ, ヒロシ
オサダ, ユタカ
ヨシミズ, チカゲ
オクダ, ノボル
アマノ, ヨウスケ
トガシ, ヒロユキ
クリタ, ユタカ
タヤス, イチロウ
|
| 抄録 |
|
|
内容記述 |
Isotopic compositions of animal tissue are an intrinsic marker commonly used to trace animal origins and migrations; however, few isotopes are effective for this purpose in marine environments, especially on a local scale. The isotope ratio of the lanthanoid element neodymium (Nd) is a promising tracer for coastal animal migrations. Neodymium derives from the same geologic materials as strontium, well known as an isotopic tracer (87Sr/86Sr) for terrestrial and anadromous animals. The advantage of the Nd isotope ratio (143Nd/144Nd, expressed as εNd) is that it varies greatly in the ocean according to the geology of the neighboring continents, whereas oceanic 87Sr/86Sr is highly uniform. This study explored the utility of the Nd isotope ratio as a marine tracer by investigating the variation of εNd preserved in tissues of coastal species, and the causes of that variation, in a region of northeastern Japan where the bedrock geology is highly variable. We measured εNd and 87Sr/86Sr in seawater, river water, and soft tissues of sedentary suspension feeders: the mussels Mytilus galloprovincialis and Mytilus coruscus and the oyster Crassostrea gigas. We also measured concentrations of three lanthanoids (La, Ce, and Pr) in shellfish bodies to determine whether the Nd in shellfish tissue was derived from solution in seawater or from suspended particulates. The εNd values in shellfish tissue varied regionally (−6 to +1), matching the ambient seawater, whereas all 87Sr/86Sr values were homogeneous and typical of seawater (0.7091–0.7092). The seawater εNd values were in turn correlated with those in the adjacent rivers, linking shellfish εNd to the geology of river catchments. The depletion of Ce compared to La and Pr (negative Ce anomaly) suggested that the Nd in shellfish was derived from the dissolved phase in seawater. Our results indicate that the distinct Nd isotope ratio derived from local geology is imprinted, through seawater, on the soft tissues of shellfish. This result underscores the potential of εNd as a tracer of coastal marine animals. |
| キーワード |
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|
主題 |
animal migration |
| キーワード |
|
|
主題 |
catchment geology |
| キーワード |
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主題 |
Ce anomaly |
| キーワード |
|
|
主題 |
coastal sea |
| キーワード |
|
|
主題 |
mussel |
| キーワード |
|
|
主題 |
Nd isotope ratio |
| キーワード |
|
|
主題 |
oyster |
| キーワード |
|
|
主題 |
river water |
| キーワード |
|
|
主題 |
seawater |
| キーワード |
|
|
主題 |
shellfish |
| キーワード |
|
|
主題 |
tracer |
| 書誌情報 |
en : Ecosphere
巻 9,
号 8,
p. e02365,
発行日 2018-08-20
|
| 収録物ID |
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|
収録物識別子タイプ |
ISSN |
|
収録物識別子 |
21508925 |
| 出版者 |
|
|
出版者 |
Wiley |
| 出版者 |
|
|
出版者 |
Ecological Society of America |
| 権利情報 |
|
|
権利情報 |
This is an open access article under the terms of the Creative Commons Attribution License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited. |
| EID |
|
|
識別子 |
388491 |
| 言語 |
|
|
言語 |
eng |
ecs_9_8_e02365.pdf (3.14 MB)
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