二枚貝殻の地球化学組成を用いた東京湾の沿岸貧酸素水塊の遡及的モニタリング

利用双壳类贝壳地球化学成分对东京湾沿岸贫氧水团进行回顾性监测

• 批准号: 17F17333
• 负责人: 佐野 有司
• 金额: $ 1.47万
• 依托单位: The University of Tokyo
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for JSPS Fellows
• 财政年份: 2017
• 资助国家: 日本
• 起止时间: 2017-11-10 至 2020-03-31
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/en/grant/KAKENHI-PROJECT-17F17333/
• 关键词: ムラサキイガイ; 貧酸素; 環境モニタリング; 陸源物質流入

貧酸素水塊は生態系や水産資源に深刻な被害をもたらす環境問題であるが，そのモニタリング・発生予測・メカニズムの理解などは十分だとは言えず，従来のフィールド調査や環境モニタリングでは限界がある・本研究は付加成長する二枚貝，特に東京湾のムラサキイガイに着目し，その殻に記録された貧酸素水塊による環境変化を微量元素組成や安定同位体組成などを分析する事により過去にさかのぼって経時的に復元する事で，貧酸素水塊の新たな研究手法を確立する事を目的としている．平成31年度は，ムラサキイガイの殻のネオジム同位体比分析による地理的起源判別法の開発を行った．日本各地及び中国から採取したムラサキイガイのネオジム同位体比を分析し，採取地点の地質学的特徴と比較することでその有用性を検証した．その結果，古い大陸地殻からなる中国から採取した個体のネオジム同位体比は日本のものと比較して非常に低い値を示すことがわかった．さらに，岩手県から茨城県の太平洋沿岸域にて南北に密な間隔で採取した個体の組成は，東北の地質の変化と明瞭に対応した値を示すことがわかった．これらの結果から，貝殻中のネオジム同位体比は地理的起源判別に有用な手法であることが示された．また，ムラサキイガイの微小領域の元素分布に基づく元素変動メカニズムに関する研究も実施した．東京湾で採取されたムラサキイガイ殻の元素組成を分析し，それにより得られた微量領域元素分布と微細殻構造の比較を行うことで，元素変動メカニズムについて議論した．その結果，マグネシウム／カルシウム比の主たる変動要因は水温ではないこと，潮汐によって形成される微細成長パターンと元素組成が良い対応を見せること，それよりさらに細かいスケールの微細殻構造と関係した元素変動パターンが見られることなどを明らかにした．

The department of water resources is deeply affected by the pollution of water resources. The environmental problems have been greatly affected. You have a good understanding of the environmental pollution. You have come to pay two dollars for the growth of this study. Please pay attention to the development of this study. In this paper, we have recorded the composition of trace elements in the environment, the composition of trace elements, the composition of stable isomers, the composition of isotopes, the composition of trace elements, the composition of trace elements, the composition of stable alleles, the composition of isotopes, the composition of trace elements, the composition of trace elements, the composition of stability, the composition of isotopes, the composition of trace elements, the composition of trace elements, the composition of stability, the composition of isotopes, the composition of trace elements, the composition of trace elements in the environment, the composition of trace elements, the composition of stable isotopes, the composition of isotopes, the composition of trace elements in the environment, the composition of trace elements, the composition of stability, the composition of homeostasis, the analysis of isotope composition, the analysis of environmental stability, the composition of trace elements in the environment, the composition of trace elements in the environment, the composition of trace elements in the environment, the composition of trace elements in the environment, the composition of trace elements, the composition of stable isotopes in the environment, the composition of trace elements in the environment, the composition The method of identification of the origin of geography is used to determine the origin of geography. All over Japan and China, all parts of Japan and China are compared with each other, and the characteristics of local geography are used to compare the usefulness and usefulness of geographical analysis. In the ancient world, there is a great deal of information about the size of the body, the area along the coast of the Pacific Ocean, the north and south of the Pacific Ocean, and the north and south of the Pacific Ocean. In the northern part of the world, there is a clear understanding of the results. The results show that the origin of geography is better than that of geography. it is useful to determine the origin of geography. The distribution of micro-field elements is related to the distribution of micro-field elements. the study of micro-field elements has been carried out in Beijing Bay, where the elements of micro-field elements have been analyzed, and the distribution of micro-field elements has been obtained by comparing the distribution of micro-field elements. the results of the experiment show that the results of the analysis of the elements in Beijing Bay have been improved. The temperature of the water, the tide, the temperature, the temperature and the temperature.

项目成果

A review of transgenerational effects of ocean acidification on marine bivalves and their implications for sclerochronology

• DOI: 10.1016/j.ecss.2020.106620
• 发表时间: 2020-04
• 期刊: Estuarine Coastal and Shelf Science
• 影响因子: 2.8
• 作者: Liqiang Zhao;K. Shirai;Kentaro Tanaka;Stefania Milano;T. Higuchi;Naoko Murakami-Sugihara;E. Walliser;Feng Yang;Yuewen Deng;B. Schöne

Retrospective monitoring of salinity in coastal waters with mussel shells

• DOI: 10.1016/j.scitotenv.2019.03.405
• 发表时间: 2019-06-25
• 期刊: SCIENCE OF THE TOTAL ENVIRONMENT
• 影响因子: 9.8
• 作者: Zhao, Liqiang;Shirai, Kotaro;Tanaka, Kiyoshi
• 通讯作者: Tanaka, Kiyoshi

New insight into light-enhanced calcification in mytilid mussels, Mytilus sp., infected with photosynthetic algae Coccomyxa sp.: δ13C value and metabolic carbon record in shells

对感染光合藻类 Coccomyxa sp. 的贻贝 (Mytilus sp.) 光增强钙化的新见解：贝壳中的 δ13C 值和代谢碳记录

• DOI: 10.1016/j.jembe.2019.151211
• 发表时间: 2019
• 期刊: Journal of Experimental Marine Biology and Ecology
• 影响因子: 2
• 作者: Zhao Liqiang;Zuykov Michael;Tanaka Kentaro;Shirai Kotaro;Anderson Julia;McKindsey Christopher W.;Deng Yuewen;Spiers Graeme;Schindler Michael
• 通讯作者: Schindler Michael

Microscale magnesium distribution in shell of the Mediterranean mussel Mytilus galloprovincialis: An example of multiple factors controlling Mg/Ca in biogenic calcite

• DOI: 10.1016/j.chemgeo.2018.10.025
• 发表时间: 2019-04-20
• 期刊: CHEMICAL GEOLOGY
• 影响因子: 3.9
• 作者: Tanaka, Kentaro;Okaniwa, Nobuyuki;Shirai, Kotaro
• 通讯作者: Shirai, Kotaro