Published Papers - Gakushi Ishimura
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The future of food from the sea
Christopher Costello, Ling Cao and Stefan Gelcich, Miguel Angel Cisneros, Christopher M. Free, Halley E. Froehlich, Elsa Galarza, Christopher D. Golden, Gakushi Ishimura, Jason Maier, Ilan Macadam-Somer, Tracey Mangin, Michael C. Melnychuk, Masanori Miyahara, Carryn de Moor, Rosamond Naylor, Linda Nøstbakken, Elena Ojea, Erin O’Reilly, Giacomo Chato Osio, Ana M. Parma, Fabian Pina Amargos, Andrew J. Plantinga, Albert Tacon, and Shakuntala H. Thilste
Nature 588 95 - 100 2020.12 [Refereed]
Bulletin of University, Institute, etc. Multiple authorship
増加し続ける世界の食料需要は、食料供給を持続的に増加していけるのかどうかを切実に問い続けている。陸上からの食料供給拡大は可能だが、それは気候変動や生物多様性喪失を深刻化させ、さらに他の生態系サービスの供給を阻害する恐れがある。海洋からの食料が食用の肉類生産の17％にすぎない現状の下、本研究で我々は、2050年までに海洋にどれだけの食料を持続可能な生産として期待できるのか検討を行った。我々は、海洋の主要な食料生産部門である、天然漁獲漁業、魚類の海洋養殖および二枚貝類の海洋養殖を対象に、生態系、経済、制度的規制および技術の制約条件を考慮した「持続可能供給曲線」を推定した。また、得られた持続可能供給曲線に需要シナリオを重ねることにより、将来の海洋食料生産量を推定した。その結果、我々が推定した、政策改革および技術革新を前提とする需要変化・供給シナリオによって、海洋からの食料は2050年までに、現在の生産量の36～74％増に相当する2100～4400万トンの増加が可能であることが明らかになった。これは、2050年までに98億人に達する世界人口に必要となる全肉類の推定増加量の12～25％に相当する。海洋からの全ての食料生産部門で増産が見込まれる中、特に海洋養殖増産の大きな可能性が推定された。こうした海洋からの潜在的食料生産が持続可能な形で実現されるかどうかは、政策改革や技術革新、将来の需要変化などの要因に左右されるだろう。
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Exploring economic optimum fishing efforts: a case of Japanese swordfish longline fishery
Gakushi Ishimura, Keita Abe, Kaitoh Kanazawa, Tomoaki Goto
Fisheries Science ( Springer ) 2022.01 [Refereed]
Bulletin of University, Institute, etc. Multiple authorship
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Small-scale fisheries in developed countries: Looking beyond developing country narratives through Japan’s perspective
Author links open overlay panelLydia C.L.Teh Louise S.L.Teh, Keita Abe, Gakushi Ishimura, RaphaelRoman
Marine Policy 2020.11 [Refereed]
Bulletin of University, Institute, etc. Multiple authorship
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Ambitious subsidy reform by the WTO presents opportunities for ocean health restoration
Christopher Costello, Katherine Millage, Sabrina Eisenbarth, Elsa Galarza, Gakushi Ishimura, Laura Lea Rubino, Vienna Saccomanno, U. Rashid Sumaila & Kent Strauss
Sustainability Science 2020.09 [Refereed]
Bulletin of University, Institute, etc. Multiple authorship
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The High Level Panel for Sustainable Ocean Economy Blue Paper:The future of food from the sea
Christopher Costello, Ling Cao and Stefan Gelcich, Miguel Angel Cisneros, Christopher M. Free, Halley E. Froehlich, Elsa Galarza, Christopher D. Golden, Gakushi Ishimura, Jason Maier, Ilan Macadam-Somer, Tracey Mangin, Michael C. Melnychuk, Masanori Miyahara, Carryn de Moor, Rosamond Naylor, Linda Nøstbakken, Elena Ojea, Erin O’Reilly, Giacomo Chato Osio, Ana M. Parma, Fabian Pina Amargos, Andrew J. Plantinga, Albert Tacon, and Shakuntala H. Thilsted
The High Level Panel for Sustainable Ocean Economy 2019.12 [Refereed]
Others Multiple authorship
This paper considers the status and future trends of food production through fisheries and aquaculture at regional and global scales; the opportunities of ocean-based food in achieving SDG 2 (Zero Hunger); and recommendations for how current barriers might be overcome to transition to more sustainable and abundant food production from the ocean.
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Can there be stable, cooperative management of a transboundary fish stock under climate variability? The case study of the Pacific sardine fishery in the California current
Ishimura, G., S. Herrick, and U.R. Sumaila.
Marine Policy 39 333 - 340 2013.01 [Refereed]
Bulletin of University, Institute, etc. Multiple authorship
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Ex-vessel market, Auction, Fisheries management, Information rent, Structural estimation
Keita Abe Yusuke Matsuki,Gakushi Ishimura, Shunsuke Managi
Marine Policy ( Elsevier ) 2021.10
Academic Journal Multiple authorship
accpted
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Ecosystem-based management can contribute to cooperation in transboundary fisheries: The case of Pacific sardine
Andrés M Cisneros-Montemayor, Gakushi Ishimura, Gordon R Munro, U. Rashid Sumaila
Fisheries Research 2020.01 [Refereed]
Bulletin of University, Institute, etc. Multiple authorship
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Alternative outcomes under different fisheries management policies: A bioeconomic analysis of Japanese fisheries
Kanae Tokunaga, Gakushi Ishimura, Shigehide Iwata, Keita Abe, Kazuhiko Otsuka, Kristin Kleisner, Rod Fujita
Marine Policy 2019.10 [Refereed]
Bulletin of University, Institute, etc. Multiple authorship
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The market value of freshness: Observations from the swordfish and blue shark longline fishery in Kesennuma, Japan
Ishimura, G. and M. Bailey
Fishery Science 79 ( 3 ) 547 - 553 2013.05 [Refereed]
Bulletin of University, Institute, etc. Single Work
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Management of Fluctuating Fish Stocks-The Case of Pacific whiting
Ishimura, G., Punt, A.E. and Huppert
Fisheries Research 73 ( 1 ) 2008.01 [Refereed]
Bulletin of University, Institute, etc. Multiple authorship
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Evaluating the impact of COVID-19 on ex-vessel prices using time series analysis
Keita Abe, Gakushi Ishimura, Shinya Baba, Kosuke Nakamura, Shota Yasui
Fisheries Science accepted 2021.12 [Refereed]
Bulletin of University, Institute, etc. Multiple authorship
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A multi-species catch reduces risk and enhances stability in the fishery? Implications from a portfolio analysis of the Hokkaido setnet fishery
Kohsuke Nakamura, Keita Abe, Gakushi Ishimura
Fisheries Science ( Springer ) 2022.12 [Refereed]
Bulletin of University, Institute, etc. Multiple authorship
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Derby versus ITQ: Iceland’s coastal fisheries explained and compared to its ITQ-managed fisheries
Stefán B. Gunnlaugsson, Daði Már Kristófersson, Sveinn Agnarsson, Hörður Sævaldsson and Gakushi Ishimura
Regional Studies in Marine Science 2021.01 [Refereed]
Bulletin of University, Institute, etc. Multiple authorship
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Developing Joint Educational Programs in Sustainability Science across Different Universities - A Case Study from Japan
Makoto Tamura, Motoharu Onuki, Makiko Sekiyama, Keishiro Hara, Michinori Uwasu, Nobuyuki Tsuji, Gakushi Ishimura, Noriyuki Tanaka, Akihisa Mori, Takashi Mino
Sustainability Science accepted 2017.12 [Refereed]
Bulletin of University, Institute, etc. Multiple authorship
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Does Trade Openness reduce domestic fishing catch?
Keita Abe, Gakushi Ishimura, Tetsuya Tsurumi, Shunsuke Managi and Ussif Rashid Sumaila
Fishery Science 2017.10 [Refereed]
Bulletin of University, Institute, etc. Multiple authorship
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Education and capacity building with research: a possible case for Future Earth
Yasuhiro Fukushima, Gakushi Ishimura, Andrew James Komasinski, Reiko Omoto, Shunsuke Managi
International Journal of Sustainability in Higher Education 18 ( 2 ) 263 - 276 2017.04 [Refereed]
Bulletin of University, Institute, etc. Multiple authorship
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Fishing games under climate variability: transboundary management of Pacific sardine in the California Current System
Ishimura, G., S. Herrick, and U.R. Sumaila.
Environmental Economics and Policy Studies 15 ( 2 ) 189 - 209 2013.04 [Refereed]
Bulletin of University, Institute, etc. Multiple authorship
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Moving beyond catch in allocation approaches for internationally shared fish stocks
Bailey, M., G. Ishimura, R. Paisley, U. R. Sumaila
Marine Policy 40 124 - 136 2013.01 [Refereed]
Bulletin of University, Institute, etc. Multiple authorship
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Assessment of Total Fisheries-Related Biomass Removal from Japan’s Exclusive Economic Zones: 1950-2010
Wilf Swart, Gakushi Ishimura
Fishery Science 80 643 - 651 2014.05 [Refereed]
Bulletin of University, Institute, etc. Multiple authorship