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Response of the Key-species in Ecosystem to Multi-decadal Changes in the Subarctic Circulation

Research Project

Project/Area Number 08456092
Research Category

Grant-in-Aid for Scientific Research (B)

Allocation TypeSingle-year Grants
Section一般
Research Field General fisheries
Research InstitutionHOKKAIDO UNIVERSITY

Principal Investigator

OHTANHI Kiyotaka  Faculty of Fisheries, Hokkaido University, 水産学部, 教授 (40001606)

Co-Investigator(Kenkyū-buntansha) ONISHI Hiroji  Faculty of Fisheries, Hokkaido University, 水産学部, 助手 (80241371)
MATSUISHI Takashi  Faculty of Fisheries, Hokkaido University, 水産学部, 助手 (60250502)
SAKURAI Yasunori  Faculty of Fisheries, Hokkaido University, 水産学部, 助教授 (30196133)
Project Period (FY) 1996 – 1998
Project Status Completed (Fiscal Year 1998)
Budget Amount *help
¥7,800,000 (Direct Cost: ¥7,800,000)
Fiscal Year 1998: ¥1,400,000 (Direct Cost: ¥1,400,000)
Fiscal Year 1997: ¥1,500,000 (Direct Cost: ¥1,500,000)
Fiscal Year 1996: ¥4,900,000 (Direct Cost: ¥4,900,000)
KeywordsSubarctic Circulation / Transition Zone / Variation in Residence Time Index of the sea ice / Variation in transport and path of the current / Variation in marine resources / Pelagic fishes / Modeling for life history / Cohort analysis based on catch-at-weight data / Analysis on historical data / 移行領域 / 分布と成長変異 / 海流系の経年変化 / 気候変化 / ネクトン類 / 群集構造
Research Abstract

Long-term variations in sea condition in the subarctic circulation connected with variation in the Aleutian Low system. Residence time index of the sea ice in the Bering Sea and the Okhotsk Sea indicated decadal changes which showed negative phase between them. Current path and transport in the subarctic circulation and the transition zone also changed inter-annually. Pelagic fishes such as the salmonoid and the squids changed in their distribution and abundance with inter-annual variation in sea conditions.
Life history of the saury were discussed with modeling analysis based on catch-at-age data. Useful cohort analysis for the cods based on catch-at-weight data were proposed.

Report

(4 results)
  • 1998 Annual Research Report   Final Research Report Summary
  • 1997 Annual Research Report
  • 1996 Annual Research Report
  • Research Products

    (28 results)

All Other

All Publications (28 results)

  • [Publications] Ohtani, K., et al. edit.: "COMPARISON BETWEEN OYASHIO REGION AND BERING SEA ECOSYSTEMS." Memoirs, Fac.Fish. Hokkaido Univ.,. 45,. 130 (1998)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1998 Final Research Report Summary
  • [Publications] Ohtani, K., H.Onishi,: "Baroclinic Transport Referred to the 3000 m Reference Level across the 180° Transect in the Subarctic North Pacific." Bull.Fac.Fish. Hokkaido Univ.48,. 53-64 (1997)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1998 Final Research Report Summary
  • [Publications] 松石 隆: "漁獲物の体長組成データに基づくマルチコホート解析法の開発と推定精度の評価" 北海道大学水産学部紀要. 43(2/1). 1-80 (1997)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1998 Final Research Report Summary
  • [Publications] Y.Sakurai, et al.: "Reproductive strategy of the ommastrephid squid Todarodes Pcificus Related to stock fluctuations and climatic changes." Proceedings of the Japan GLOBEC International Symposium,. 148-155 (1998)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1998 Final Research Report Summary
  • [Publications] J.R.Bower, et al.: "Transport of the ommastrephid squid Todarodes Pcificus under cold-water anesthesia" Aquaculture. 170. 127-130 (1999)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1998 Final Research Report Summary
  • [Publications] H.Onishi and K.Ohtani: "Seasonal and interannual variability of the Alaskan Stream in the central North Pacific" Proceedings of the 4^<th> International Scientific Symposium, Okinawa(WOCE). in press. (1999)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1998 Final Research Report Summary
  • [Publications] Ohtani, K., H.Miyake, Y.Sakurai and A.V.Tyler (edition): "COMPARISON BETWEEN OYASHIO REGION AND BERING SEA ECOSYSTEMS." Memoirs, Fac.Fish.Hokkaido Univ.45, Spec.edit.No.2. 130 (1998)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1998 Final Research Report Summary
  • [Publications] Ohtani, K., H.Onishi, N.Kobayashi and G.Anma: "Baroclinic Transport Referred to the 3000 m Reference Level across the 180゚ Transect in the Subarctic North Pacific." Bull.Fac.Fish.Hokkaido Univ.48. 53-64 (1997)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1998 Final Research Report Summary
  • [Publications] Sakurai, Y., J.R.Bower, H.Kiyofugi, S.Saitoh, T.Goto, Y.Hiyama, K.Mori and Y.Nakamura: "Reproductive strategy of the ommastrephid squid Todarodes pacificus related to stock fluctuations and climatic changes." Proceedings of Japan GLOBEC Inter-national Symposium. 148-155 (1998)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1998 Final Research Report Summary
  • [Publications] J.R.Bower, Y.Sakurai J.Yamamoto and H.Ishii: "Transport of the ommastrephid squid Todarodes pacificus under cold-water Anesthesia." Aquaculture. 170 (2). 127-130 (1999)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1998 Final Research Report Summary
  • [Publications] Onishi, H.and K.Ohtani: "Seasonal and interannual variability of the Alaskan Stream in the central North Pacific." Proceedings of the 4^<th> international Scientific Symposium (WOCE), Okinawa. (in press).

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1998 Final Research Report Summary
  • [Publications] Matsuishi, T: "Development and accuracy Assessment of a method of separable VPA based on catch-at-length data." Memoirs of Fac.Fish.Hokkaido Univ.43 (In Japanese with English summary). 1-80 (1997)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1998 Final Research Report Summary
  • [Publications] Y.Sakurai et al.: "Reproductive strategy of the ommastrephid squid Todarodes Pcificus Related to stock fluctuations and climatic changes." Proceedings of the Japan GLOBEC International Symposium,. 148-155 (1998)

    • Related Report
      1998 Annual Research Report
  • [Publications] J.R.Bower et al.: "Transport of the ommastrephid squid Todarodes Pcificus under cold-water anesthesia" Aquaculture. 170. 127-130 (1999)

    • Related Report
      1998 Annual Research Report
  • [Publications] 桜井泰憲: "海洋生態系における資源と高次捕食者:ベーリング海における事例" 月刊海洋. 30(5). 307-314 (1998)

    • Related Report
      1998 Annual Research Report
  • [Publications] 桜井泰憲: "気候変化に伴うスルメイカ資源変動のシナリオ" 月刊海洋. 30(7). 424-445 (1998)

    • Related Report
      1998 Annual Research Report
  • [Publications] 松石隆: "漁獲物の体重組成データベースにもとづくマルチコホート解析法の開発と推定精度の評価" Memoirs Fac.Fish. Hokkaido Univ.46(1)(in press). (1999)

    • Related Report
      1998 Annual Research Report
  • [Publications] H.Onisi and K.Otani: "Seasonal and interannual variability of the Alaskan Stream in the central North Pacific" Proceedings of the 4^<th> International Scientific Symposium, Okinawa(WOCE). (in press). (1999)

    • Related Report
      1998 Annual Research Report
  • [Publications] 松石 隆: "漁獲物の体長組成データに基づくマルチコホート解析法の開発と推定精度の評価" 北海道大学水産学部紀要. 43(2/1). 1-80 (1997)

    • Related Report
      1997 Annual Research Report
  • [Publications] Ohtani,K., Onishi,M., Kobayashi,K., and Anma,G.: "Baroclinic folw referred to the 3000m reference level across the 180 transect in the subarctic North Pacific." Bull.Fac.Fish.Hokkaido Univ.48. 53-64 (1997)

    • Related Report
      1997 Annual Research Report
  • [Publications] Onishi,M. and Ohtani,K.: "Volume transport of the Tsushima Warm Current,west of Tsugaru Strait bifurcation area." Journal of Oceanography. 53. 27-34 (1997)

    • Related Report
      1997 Annual Research Report
  • [Publications] 高木省吾・桜井泰憲・亀井佳彦他3名: "北太平洋東経155度線における夏季と秋季の海洋構造と表層性魚類・イカ類の分布" 北大水産彙報. 48. 13-28 (1997)

    • Related Report
      1997 Annual Research Report
  • [Publications] 高木省吾・大西広二: "北太平洋亜寒帯移行領域における初夏の表層性魚類・イカ類群集の経年変化(1979-1995)" 平成8年度さけ・ます資源部会報告. 1997. 10-26 (1997)

    • Related Report
      1997 Annual Research Report
  • [Publications] 桜井泰憲: "マダラおよびサンマ" 水産動物の成長解析,水産学シリーズ,恒星社厚生閣. 115. 106-122 (1997)

    • Related Report
      1997 Annual Research Report
  • [Publications] S.Suyama, Y.Sakurai and K.Shimazaki: "Age and growth of Pacific saurv Cololabis saira (Brevoort) in the western North Pacific Ocean estimated from daily otolith growth increments" Fish. Sci.62 (1). 1-7 (1996)

    • Related Report
      1996 Annual Research Report
  • [Publications] 巣山 哲・桜井泰憲・島崎健二: "夏季の中部北太平洋におけるサンマの成熟と日齢" 日本水産学会誌. 62 (3). 212-220 (1996)

    • Related Report
      1996 Annual Research Report
  • [Publications] 松石 隆: "漁獲物の体長組成データにもとづくマルチコホート解析法の開発と推定精度の評価" MEMOIRS of the FAC.FISH. HOKKAIDO UNIV.43 (1/2). 1-80 (1997)

    • Related Report
      1996 Annual Research Report
  • [Publications] ONISHI, M and K.OHTANI: "Volume Transport of the Tsushima Warm Current, West of Tsugaru Strait Bifurcation Area" Journal of Oceanography. 53. 27-34 (1997)

    • Related Report
      1996 Annual Research Report

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Published: 1996-04-01   Modified: 2016-04-21  

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