| Item type |
紀要論文 / Departmental Bulletin Paper(1) |
| 公開日 |
2010-02-05 |
| タイトル |
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|
タイトル |
Low sulfur isotopic signatures (δ^<34>S) of macrozoobenthos from a brackish lagoon: contribution of microbially reduced sulfides |
| 言語 |
|
|
言語 |
eng |
| キーワード |
|
|
主題Scheme |
Other |
|
主題 |
Stable isotope ratio |
| キーワード |
|
|
主題Scheme |
Other |
|
主題 |
Sulfur |
| キーワード |
|
|
主題Scheme |
Other |
|
主題 |
Infaunal animals |
| キーワード |
|
|
主題Scheme |
Other |
|
主題 |
Sulfate-reducing bacteria (SRB) |
| キーワード |
|
|
主題Scheme |
Other |
|
主題 |
Food source |
| 資源タイプ |
|
|
資源タイプ識別子 |
http://purl.org/coar/resource_type/c_6501 |
|
資源タイプ |
departmental bulletin paper |
| 著者 |
KANAYA, Gen
NOBATA, Ei
MAKI, Yonosuke
KIKUCHI, Eisuke
MIZOTA, Chitoshi
|
| 抄録 |
|
|
内容記述タイプ |
Abstract |
|
内容記述 |
Stable sulfur isotope ratios (δ^<34>S) of infaunal bivalves (Macoma contabulata, Nuttallia olivacea, and Ruditapes philippinarum) and polychaetes (Hediste spp.; consisted of H. atoka and H. diadroma) collected from two stations in the Gamo Lagoon (Japan) were determined to assess trophic pathways in highly reductive, estuarine soft-bottom habitats. The stations were characterized by distinctive sediment characteristics (Station A, sandy sediment with low sulfide content; Station B, muddy and sulfide-rich sediment). Soft tissues of the consumers exhibited much more depleted δ^<34>S values (+3.2 to +12.1‰) than those of dissolved sulfate in the water column (+20.6 to +20.8‰). The value for each species was 1.6 to 5.3‰ lower at Station B than at Station A. These results suggest the assimilation of sulfides in the sediment (δ^<34>S; -23.2 to -22.7‰) via microbial trophic pathways. In this lagoon, benthic microalgae and/or other microbes in the sediment are the most probable ^<34>S-depleted food source for the consumers. Interspecies variations in δ^<34>S values are explained by the different dietary contribution of the ^<34>S-depleted diets versus ^<34>S-enriched phytoplankton and are closely related to different feeding habits (i.e., surface-deposit feeding, facultative suspension feeding, and obligatory suspension feeding). |
| 内容記述 |
|
|
内容記述タイプ |
Other |
|
内容記述 |
論文 |
| 内容記述 |
|
|
内容記述タイプ |
Other |
|
内容記述 |
Article |
| 書誌情報 |
東北アジア研究
en : Northeast Asian studies
号 12,
p. 133-142,
発行日 2008-03-25
|
| ISSN |
|
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収録物識別子タイプ |
ISSN |
|
収録物識別子 |
1343-9332 |
| 書誌レコードID |
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|
収録物識別子タイプ |
NCID |
|
収録物識別子 |
AA11158374 |
| フォーマット |
|
|
内容記述タイプ |
Other |
|
内容記述 |
application/pdf |
| 出版者 |
|
|
出版者 |
東北大学東北アジア研究センター |
| 出版者 |
|
|
出版者 |
publisher |
| 資源タイプ |
|
|
内容記述タイプ |
Other |
|
内容記述 |
紀要類 |
| 登録日 |
|
|
日付 |
2010-02-05 |
|
日付タイプ |
Created |
| 公開日（投稿完了日） |
|
|
日付 |
2010-02-05 |
|
日付タイプ |
Created |
| 発行日 |
|
|
日付 |
2008 |
|
日付タイプ |
Created |
| フォーマット |
|
|
内容記述タイプ |
Other |
|
内容記述 |
760503 bytes |
| 著者所属 |
|
|
値 |
Center for Northeast Asian Studies, Tohoku University / Biological Institute, Graduate School of Science, Tohoku University / Faculty of Humanities and Social Sciences, Iwate University / Center for Northeast Asian Studies, Tohoku University / Faculty of Agriculture, Iwate University |
| 更新日 |
|
|
日付 |
2010-02-05 |
|
日付タイプ |
Created |
KJ00005127337.pdf (760.5 kB)
