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Identification of mercury-exposed marine hot spot around Japan using seabirds

Research Project

Project/Area Number 20H04379
Research Category

Grant-in-Aid for Scientific Research (B)

Allocation TypeSingle-year Grants
Section一般
Review Section Basic Section 64040:Social-ecological systems-related
Research InstitutionMeijo University

Principal Investigator

Niizuma Yasuaki  名城大学, 農学部, 教授 (00387763)

Co-Investigator(Kenkyū-buntansha) 高橋 晃周  国立極地研究所, 先端研究推進系, 教授 (40413918)
細田 晃文  名城大学, 農学部, 准教授 (50434618)
富田 直樹  公益財団法人山階鳥類研究所, その他部局等, 研究員 (90619917)
Project Period (FY) 2020-04-01 – 2024-03-31
Project Status Completed (Fiscal Year 2023)
Budget Amount *help
¥18,070,000 (Direct Cost: ¥13,900,000、Indirect Cost: ¥4,170,000)
Fiscal Year 2023: ¥2,210,000 (Direct Cost: ¥1,700,000、Indirect Cost: ¥510,000)
Fiscal Year 2022: ¥2,600,000 (Direct Cost: ¥2,000,000、Indirect Cost: ¥600,000)
Fiscal Year 2021: ¥2,860,000 (Direct Cost: ¥2,200,000、Indirect Cost: ¥660,000)
Fiscal Year 2020: ¥10,400,000 (Direct Cost: ¥8,000,000、Indirect Cost: ¥2,400,000)
Keywords水銀汚染 / 海鳥 / 高次消費動物 / 海洋生態系 / バイオロギング / 安定同位体比 / 換羽 / 水銀 / ウミネコ / 風切羽根 / 海洋汚染 / 沿岸 / 低濃度汚染 / 高次捕食動物 / 沿岸域 / 安定同位体 / 生物濃縮 / ホットスポット / 窒素安定同位体 / モニタリング / 海洋ホットスポット
Outline of Research at the Start

UNEP世界水銀アセスメントによると,環境中への水銀の排出は全世界で1960トンもある.八戸市で繁殖するウミネコの水銀濃度が他地域のカモメ 属に比べ高いことや,ウミネコの水銀汚染が20年前から急激に進行していることから,海洋生態系の水銀汚染の影響は広範囲である懸念がある.本研究では,ウミネコを研究対象種とし,日本沿岸の複数のウミネコ繁殖地から親鳥の血液,羽根と餌生物を採集し,水銀汚染の影響を受けている範囲と程度を明らかにする.次に,窒素安定同位体比および水銀濃度の測定とバイオロギングの手法による移動軌跡の計測を組み合わせ,日本周辺海域で水銀汚染のホットスポットを特定する手法を開発する.

Outline of Final Research Achievements

The aim of this study is to identify hotspots of high mercury contamination in the seas around Japan and to identify sea areas where seabirds are ecologically affected. We used measurements of mercury concentrations in feathers molting at different season of the year for black-tailed gulls and biologging techniques to identify areas used by gulls and then to estimate areas of mercury exposure for gulls. Analysis of the areas used by gulls and the mercury concentrations accumulated in their feathers revealed that mercury concentrations tended to be higher in the northern waters of Hokkaido. By using biologging techniques and measurements of mercury in the feathers of seabirds being higher predators of the marine ecosystem, that migrates and feeds over a wide range of the ocean, it is possible to estimate areas of high mercury pollution in the waters surrounding Japan.

Academic Significance and Societal Importance of the Research Achievements

水銀汚染のホットスポットを特定するためには環境中の水銀を測定する必要があるが,海水の水銀蓄積は低濃度であるため,直接的に水銀を検出することは困難である.ウミネコは沿岸域を主な活動域とし,高次消費動物であるため,生物濃縮により羽根に水銀を蓄積する.本研究により,ウミネコが1年間で摂取した水銀が風切り羽根に反映することが分かり,これらを利用することでウミネコが活動する海域において水銀汚染をモニタリングできることが明らかとなった.船舶などを用いた手法に比べ,コストがかからない手法といえる.また,観測例の少ない北海道北方海域が東北沿岸と比べ水銀汚染が進行している可能性が示された.

Report

(5 results)
  • 2023 Annual Research Report   Final Research Report ( PDF )
  • 2022 Annual Research Report
  • 2021 Annual Research Report
  • 2020 Annual Research Report
  • Research Products

    (23 results)

All 2024 2023 2022 2021 2020

All Journal Article (9 results) (of which Peer Reviewed: 9 results,  Open Access: 7 results) Presentation (14 results) (of which Int'l Joint Research: 4 results,  Invited: 1 results)

  • [Journal Article] Daily energy expenditure of chick-rearing Rhinoceros Auklets Cerorhinca monocerata.2024

    • Author(s)
      Nagatani N, Shirai M, Okado J, Niizuma Y.
    • Journal Title

      Ornithological Science

      Volume: -

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Stomach contents and stable isotope analysis reveal Antarctic prey in short-tailed shearwaters sampled at sea2023

    • Author(s)
      Azumi Sarara、Thiebot Jean-Baptiste、Takahashi Akinori、Okado Jumpei、Nagatani Nao、Niizuma Yasuaki、Moteki Masato、Watanuki Yutaka
    • Journal Title

      Journal of Ornithology

      Volume: 165 Issue: 1 Pages: 263-267

    • DOI

      10.1007/s10336-023-02109-0

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] The growth rate of Black-tailed Gull chicks is negatively related to total mercury of female parents on Kabushima (Kabu Island), Japan2023

    • Author(s)
      Tani Hinako, Shirai Masaki, Mizutani Yuichi, Yasuaki Niizuma
    • Journal Title

      Avian Conservation and Ecology

      Volume: 18 Issue: 1 Pages: 14-14

    • DOI

      10.5751/ace-02416-180114

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Mercury contamination in endocrine glands of black-tailed gulls Larus crassirostris on Kabushima (Kabu Island), Japan.2021

    • Author(s)
      Niizuma Y, Tani H, Yamashita Y, Ito M, Maeda M
    • Journal Title

      Marine Ornithology

      Volume: 49 Pages: 329-333

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Field and laboratory metabolism and thermoregulation in rhinoceros auklets.2021

    • Author(s)
      Umeyama A, Niizuma Y, Shirai M
    • Journal Title

      PeerJ

      Volume: 9 Pages: e11460-e11460

    • DOI

      10.7717/peerj.11460

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Analysis of why sea turtles swim slowly: a metabolic and mechanical approach2021

    • Author(s)
      Chihiro Kinoshita, Takuya Fukuoka, Tomoko Narazaki, Yasuaki Niizuma and Katsufumi Sato
    • Journal Title

      Journal of Experimental Biology

      Volume: 224 Issue: 4 Pages: 236216-236216

    • DOI

      10.1242/jeb.236216

    • Related Report
      2021 Annual Research Report 2020 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] The diet composition and ingested plastics of Laysan and Black-footed Albatrosses incidentally captured by the pelagic longline fishery in the Western North Pacific2021

    • Author(s)
      Nakatsuka S, Ochi D, Inoue Y, Ohizumi H, Niizuma Y, Minami H
    • Journal Title

      ORNITHOLOGICAL SCIENCE

      Volume: 20 Issue: 2 Pages: 129-140

    • DOI

      10.2326/osj.20.129

    • NAID

      130008069895

    • ISSN
      1347-0558
    • Related Report
      2021 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] The diet composition and ingested plastics of Laysan and Black-footed Albatrosses incidentally captured by the pelagic longline fishery in the Western North Pacific.2021

    • Author(s)
      Nakatsuka S, Ochi D, Inoue Y, Ohizumi H, Niizuma Y, Minami H
    • Journal Title

      Ornithological Science

      Volume: 印刷中

    • Related Report
      2020 Annual Research Report
    • Peer Reviewed
  • [Journal Article] The breeding seabird community reveals that recent sea ice loss in the Pacific Arctic does not benefit piscivores and is detrimental to planktivores2020

    • Author(s)
      Will A, Takahashia A, Thiebota J-B, Martinez A, Kitaiskaia E, Britt L, Nichol D, Murphy J, Dimond A, Tsukamoto S, Nishizawa B, Niizuma Y, Kitaysky A
    • Journal Title

      Deep-Sea Research Part II

      Volume: 181-182 Pages: 104902-104902

    • DOI

      10.1016/j.dsr2.2020.104902

    • Related Report
      2020 Annual Research Report
    • Peer Reviewed / Open Access
  • [Presentation] Ecological transfer of mercury from seabirds to terrestrial biological community: insights from rhinoceros auklet breeding grounds.2024

    • Author(s)
      K Oshima・K Matsumoto・Y Niizuma・Y Watanuki・S Wada・A Shoji.
    • Organizer
      2024 Pacific Seabird Group 51st Annual Meeting
    • Related Report
      2023 Annual Research Report
    • Int'l Joint Research
  • [Presentation] ウミネコの羽における水銀と窒素安定同位体比の関係.2023

    • Author(s)
      新妻靖章
    • Organizer
      日本鳥学会2023年度大会
    • Related Report
      2023 Annual Research Report
  • [Presentation] ウミネコの羽における水銀と窒素安定同位体比の関係.2023

    • Author(s)
      寺田卓史・新妻靖章.
    • Organizer
      日本鳥学会2023年度大会
    • Related Report
      2023 Annual Research Report
  • [Presentation] 野生のウミネコのテロメア長は水銀暴露によって短縮する.2023

    • Author(s)
      大野夏実・水谷友一・細田晃文・新妻靖章.
    • Organizer
      日本鳥学会2023年度大会
    • Related Report
      2023 Annual Research Report
  • [Presentation] ミサゴの水銀濃度に影響を及ぼす要因を探る.2023

    • Author(s)
      鈴木龍晟・嘉藤慎譲・太田吉厚・太田理恵・新妻靖章・和田茂樹・庄子晶子.
    • Organizer
      日本鳥学会2023年度大会
    • Related Report
      2023 Annual Research Report
  • [Presentation] 海鳥が媒介する海洋由来水銀の陸上生態系への波及効果.2023

    • Author(s)
      大島康平・新妻靖章・綿貫豊・和田茂樹・庄子晶子.
    • Organizer
      日本鳥学会2023年度大会
    • Related Report
      2023 Annual Research Report
  • [Presentation] 野生下のウミネコのテロメア長は水銀暴露によって短縮するか2023

    • Author(s)
      大野夏実・大野夏実・水谷友一・細田晃文・新妻靖章
    • Organizer
      令和4年度メチル水銀研究ミーティング
    • Related Report
      2022 Annual Research Report
    • Invited
  • [Presentation] Cost of reproduction mediated by oxidative stress in seabird - an experimental study2022

    • Author(s)
      Chinatsu Nakajima, Jacopo G. Cecere, Kyle H. Elliott, Marie Claire Gatt, Scott Hatch, Yasuaki Niizuma, Don-Jean Leandri-Breton, Joan Ferrer Obiol, Diego Rubolini, Shannon Whelan, Akiko Shoji
    • Organizer
      2020 Pacific Seabird Group 49th Annual Meeting
    • Related Report
      2021 Annual Research Report
    • Int'l Joint Research
  • [Presentation] 海鳥類における水銀蓄積状況の種間及び島間比較2021

    • Author(s)
      中嶋千夏,K Elliott,S Whelan,A Fayet,新妻靖章,大門純平,S Hatch, 庄子晶子
    • Organizer
      日本鳥学会2021年度大会
    • Related Report
      2021 Annual Research Report
  • [Presentation] アホウドリ類の胃中プラスチック:北太平洋 北西部とほか海域との比較2021

    • Author(s)
      酒井理佐,山田和佳,西沢文吾,越智大介,新 妻靖章,綿貫豊
    • Organizer
      日本鳥学会2021年度大会
    • Related Report
      2021 Annual Research Report
  • [Presentation] 南極海におけるハシボソミズナギドリの餌選択2021

    • Author(s)
      安積紗羅々,Mark Hindell,高橋晃周,國分亙彦,安藤靖浩,茂木正人,大門純平, 新妻靖章,綿貫豊
    • Organizer
      日本鳥学会2021年度大会
    • Related Report
      2021 Annual Research Report
  • [Presentation] COMPARISON OF MERCURY LEVELS IN FEATHERS OF OSPREY IN THE NORTHEAST REGION OF JAPAN2021

    • Author(s)
      Sakura Lauhoff, Yasuaki Niizuma, Mitsuyoshi Kato, Yoshiatsu Ota, Nobuyuki Shoji, Akiko Shoji
    • Organizer
      2021 Pacific Seabird Group 48th Annual Meeting
    • Related Report
      2020 Annual Research Report
    • Int'l Joint Research
  • [Presentation] LINKING MERCURY CONCENTRATIONS WITH AT-SEA AREAS IN THREE SPECIES OF AUKS, BREEDING ACROSS THE PACIFIC AND ATLANTIC OCEANS2021

    • Author(s)
      Chinatsu Nakajima, Kyle H. Elliott, Shannon Whelan, Annette L. Fayet, Yasuaki Niizuma, Jumpei Okado, Scott Hatch, Akiko Shoji
    • Organizer
      2021 Pacific Seabird Group 48th Annual Meeting
    • Related Report
      2020 Annual Research Report
    • Int'l Joint Research
  • [Presentation] ゆっくり泳ぐか?速く泳ぐか?深海へ潜水する鯨類の潜水戦略:バイオメカニクスとスケーリングの視点から2021

    • Author(s)
      青木かがり, Andreas Fahlman, 鈴木一平, 坂本健太郎, 稲森大樹, 渡辺友梨, 船坂徳, 新妻靖章, 佐藤克文
    • Organizer
      第68回日本生態学会
    • Related Report
      2020 Annual Research Report

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Published: 2020-04-28   Modified: 2025-01-30  

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