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Elucidation of current status and the mechanism on changes in coastal ecosytems off Fukushima after the 2011 Tohoku earthquake and tsunami and the nuclear disaster

Research Project

Project/Area Number 18H03962
Research Category

Grant-in-Aid for Scientific Research (A)

Allocation TypeSingle-year Grants
Section一般
Review Section Medium-sized Section 40:Forestry and forest products science, applied aquatic science, and related fields
Research InstitutionNational Institute for Environmental Studies

Principal Investigator

Horiguchi Toshihiro  国立研究開発法人国立環境研究所, 環境リスク・健康領域, 室長 (30260186)

Co-Investigator(Kenkyū-buntansha) 久米 元  鹿児島大学, 農水産獣医学域水産学系, 准教授 (00554263)
姜 益俊  九州大学, 共創学部, 准教授 (20503098)
遠藤 一佳  東京大学, 大学院理学系研究科(理学部), 教授 (80251411)
児玉 圭太  国立研究開発法人国立環境研究所, 環境リスク・健康研究センター, 主任研究員 (90391101)
Project Period (FY) 2018-04-01 – 2022-03-31
Project Status Completed (Fiscal Year 2021)
Budget Amount *help
¥44,200,000 (Direct Cost: ¥34,000,000、Indirect Cost: ¥10,200,000)
Fiscal Year 2021: ¥8,580,000 (Direct Cost: ¥6,600,000、Indirect Cost: ¥1,980,000)
Fiscal Year 2020: ¥11,180,000 (Direct Cost: ¥8,600,000、Indirect Cost: ¥2,580,000)
Fiscal Year 2019: ¥11,180,000 (Direct Cost: ¥8,600,000、Indirect Cost: ¥2,580,000)
Fiscal Year 2018: ¥13,260,000 (Direct Cost: ¥10,200,000、Indirect Cost: ¥3,060,000)
Keywords潮間帯 / 無脊椎動物 / 底棲魚介類 / 個体数密度 / 性成熟 / 通年成熟 / 東日本大震災 / 福島原発事故
Outline of Final Research Achievements

We investigated population densities and spawning characteristics in the rock shell, as well as species richness and population densities in intertidal invertebrates at sites in Ibaraki, Fukushima and Miyagi Prefectures, including sites near Fukushima Daiichi Nuclear Power Plant (FDNPP). We also examined the gonads of the rock shell specimens collected at sites near FDNPP (Okuma and Tomioka) and at a reference site,120 km south of FDNPP (Hiraiso), histologically to evaluate their reproductive cycle and sexual maturation. The gonads of the rock shells collected at Okuma,1 km south of FDNPP, exhibited consecutive sexual maturation, whereas sexual maturation of the gonads of specimens collected at Hiraiso was observed only in summer.
Results on fisheries-independent bottom-trawl and larval surveys in the coastal water off Fukushima revealed total megabenthic population densities had shown a decreasing tendency and that no or few larvae of Penaeoidea were collected at all sites.

Academic Significance and Societal Importance of the Research Achievements

東日本大震災と福島原発事故の後、1F近傍で潮間帯の無脊椎動物の種数とイボニシの個体数密度の減少がみられ、それらの回復に4~5年を要した。加えて、1Fの南側に位置する大熊町のイボニシに通年成熟現象が観察された。いずれも奇異な現象である。今後、それぞれの現象を引き起こした要因とメカニズムの究明が必要である。
また、東日本大震災・福島原発事故後の福島県沿岸で底棲魚介類の群集構造に変化が認められた。震災・原発事故以降、福島県沿岸では複数の底棲魚介類の種で繁殖・再生産が阻害されている可能性が高まった。福島県沿岸における底棲魚介類の減少要因あるいは増殖阻害要因の究明を図り、必要な対策を講じる必要がある。

Report

(5 results)
  • 2021 Annual Research Report   Final Research Report ( PDF )
  • 2020 Annual Research Report
  • 2019 Annual Research Report
  • 2018 Annual Research Report
  • Research Products

    (23 results)

All 2022 2021 2020 2019 2018 Other

All Int'l Joint Research (5 results) Journal Article (3 results) (of which Int'l Joint Research: 2 results,  Peer Reviewed: 3 results,  Open Access: 2 results) Presentation (9 results) (of which Int'l Joint Research: 4 results) Book (3 results) Remarks (3 results)

  • [Int'l Joint Research] University of Aveiro(ポルトガル)

    • Related Report
      2021 Annual Research Report
  • [Int'l Joint Research] National Pedagogical University(ウクライナ)

    • Related Report
      2021 Annual Research Report
  • [Int'l Joint Research] University of Aveiro(ポルトガル)

    • Related Report
      2020 Annual Research Report
  • [Int'l Joint Research] Ternopil V. H. Nat'l Ped. University(ウクライナ)

    • Related Report
      2019 Annual Research Report
  • [Int'l Joint Research] University of Aveiro(ポルトガル)

    • Related Report
      2019 Annual Research Report
  • [Journal Article] What Caused Declines in Intertidal Invertebrate Populations around Fukushima Daiichi Nuclear Power Plant after the 2011 Great East Japan Earthquake, Tsunami, and Nuclear Disaster?2022

    • Author(s)
      Horiguchi Toshihiro、Kodama Keita
    • Journal Title

      Toxics

      Volume: 10 Issue: 5 Pages: 214-214

    • DOI

      10.3390/toxics10050214

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Consecutive sexual maturation observed in a rock shell population in the vicinity of the Fukushima Daiichi Nuclear Power Plant, Japan2021

    • Author(s)
      Horiguchi, T., Kawamura, K., Ohta, Y.
    • Journal Title

      Scientific Reports

      Volume: 11 Issue: 1 Pages: 560-560

    • DOI

      10.1038/s41598-020-80686-3

    • Related Report
      2020 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Current status of the megabenthic community in coastal Fukushima Prefecture, Japan, in the wake of the Great East Japan Earthquake2018

    • Author(s)
      Kodama K、Aramaki T、Horiguchi T
    • Journal Title

      Marine Environmental Research

      Volume: 140 Pages: 358-374

    • DOI

      10.1016/j.marenvres.2018.07.005

    • Related Report
      2018 Annual Research Report
    • Peer Reviewed / Int'l Joint Research
  • [Presentation] 福島県沿岸域の魚介類に蓄積したSr-90 の空間的な濃度分布と種差の解析2022

    • Author(s)
      近都浩之, 児玉圭太, 堀口敏宏
    • Organizer
      令和4年度日本水産学会春季大会
    • Related Report
      2021 Annual Research Report
  • [Presentation] 東日本大震災及び福島原発事故後の潮間帯無脊椎動物の減少要因究明に向けた取り組み2021

    • Author(s)
      堀口敏宏
    • Organizer
      新学術領域研究(研究領域提案型)『学術研究支援基盤形成』 短寿命RI供給プラットフォーム
    • Related Report
      2021 Annual Research Report
  • [Presentation] Changes in community- and population-levels of invertebrates in intertidal zones after the Fukushima nuclear disaster2020

    • Author(s)
      Horiguchi, T, Kodama, K., Kume, G., Kang, I.J., Kawamura, K., Ohta, Y.
    • Organizer
      International Conference on Radioecology and Environmental Radioactivity (ICRER) 2020
    • Related Report
      2020 Annual Research Report
    • Int'l Joint Research
  • [Presentation] 福島県沿岸域における底棲魚介類群集構造の時空間的特性2020

    • Author(s)
      児玉圭太, 近都浩之, 荒巻能史, 堀口敏宏
    • Organizer
      令和2年度日本水産学会春季大会
    • Related Report
      2020 Annual Research Report
  • [Presentation] Consecutive sexual maturation in the rock shell, Thais clavigera collected at a site near the Fukushima Daiichi Nuclear Power Plant2019

    • Author(s)
      Horiguchi T, Kodama K, Kume G, Kang IJ, Kawamura K, Ohta Y
    • Organizer
      19th International Symposium on Toxicity Assessment
    • Related Report
      2019 Annual Research Report
    • Int'l Joint Research
  • [Presentation] 震災・原発事故後の福島県潮間帯生物相の経時変化2019

    • Author(s)
      堀口敏宏, 児玉圭太, 久米元, 姜益俊, 川村佳代子, 太田康彦
    • Organizer
      環境ホルモン学会第22回研究発表会
    • Related Report
      2019 Annual Research Report
  • [Presentation] What caused decline in intertidal biota after the 2011 Great East Japan Earthquake and Tsunami and the Fukushima nuclear disaster?2018

    • Author(s)
      Horiguchi T, Kodama K, Kume G, Kang IJ
    • Organizer
      RACI (The Royal Australian Chemical Institute) Radiochemistry Division Workshop
    • Related Report
      2018 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Delayed recovery from declines in the population densities and species richness of intertidal invertebrates near the Fukushima Daiichi Nuclear Power Plant2018

    • Author(s)
      Horiguchi T, Kodama K, Kume G, Kang IJ, Kawamura K, Ohta Y
    • Organizer
      SPERA (The South Pacific Environmental Radioactivity Association) Conference 2018
    • Related Report
      2018 Annual Research Report
    • Int'l Joint Research
  • [Presentation] 東日本大震災及び原発事故後の福島県における潮間帯生物相の経時変化(第3報)2018

    • Author(s)
      堀口敏宏, 児玉圭太, 久米元, 姜益俊, 漆谷博志, 川村佳代子
    • Organizer
      第5回福島第一原発事故による周辺生物への影響に関する勉強会
    • Related Report
      2018 Annual Research Report
  • [Book] Advances in Invertebrate (Neuro)Endocrinology: A Collection of Reviews in the Post-Genomic Era Volume 1: Phyla Other Than Anthropoda2020

    • Author(s)
      Horiguchi, T., Ohta, Y. (Edited by Saber Saleuddin, Angela B. Lange, Ian Orchard)
    • Total Pages
      446
    • Publisher
      Apple Academic Press Inc.
    • ISBN
      9781771888929
    • Related Report
      2020 Annual Research Report
  • [Book] Low-Dose Radiation Effects on Animals and Ecosystems, Long-Term Study on the Fukushima Nuclear Accident2020

    • Author(s)
      Horiguchi, T., Kodama, K., Kume, G., Kang, I.J. (ed. Fukumoto, M.)
    • Total Pages
      264
    • Publisher
      Springer
    • ISBN
      9789811382185
    • Related Report
      2019 Annual Research Report
  • [Book] Advances in Invertebrate (Neuro)Endocrinology: A Collection of Reviews in the Post-Genomic Era2020

    • Author(s)
      Horiguchi, T., Ohta, Y. (eds. Saleuddin, S., Lange, A.B., Orchard, I.)
    • Total Pages
      896
    • Publisher
      Apple Academic Press
    • ISBN
      9781771888097
    • Related Report
      2019 Annual Research Report
  • [Remarks] 福島第一原子力発電所の南側約1km地点の巻貝に通年成熟現象

    • URL

      https://www.nies.go.jp/whatsnew/20210121/20210121.html

    • Related Report
      2021 Annual Research Report
  • [Remarks] イボニシを拾う男

    • URL

      https://www3.nhk.or.jp/news/special/sci_cul/2021/12/special/drhoriguchi/

    • Related Report
      2021 Annual Research Report
  • [Remarks] 報道発表:福島第一原子力発電所の南側約1km地点の巻貝に 通年成熟現象

    • URL

      https://www.nies.go.jp/whatsnew/20210121/20210121.html

    • Related Report
      2020 Annual Research Report

URL: 

Published: 2018-04-23   Modified: 2023-01-30  

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