明日の水産業(Tomorrow’s Mariculture)迅速で、協調的で、慎重な行動により、海を持続的に耕し将来の人口に食糧を供給する。 With swift, concerted and careful action, the ocean can be sustainably cultivated to provide food for future populations

2022-04-26 カリフォルニア大学サンタバーバラ校(UCSB)

＜関連情報＞

• https://www.news.ucsb.edu/2022/020617/tomorrow-s-mariculture
• https://www.nature.com/articles/s41586-022-04674-5

気候変動下での海洋食料生産の拡大 Expanding ocean food production under climate change

Christopher M. Free,Reniel B. Cabral,Halley E. Froehlich,Willow Battista,Elena Ojea,Erin O’Reilly,James E. Palardy,Jorge García Molinos,Katherine J. Siegel,Ragnar Arnason,Marie Antonette Juinio-Meñez,Katharina Fabricius,Carol Turley & Steven D. Gaines
Nature  Published: 27 April 2022
DOI:https://doi.org/10.1038/s41586-022-04674-5

Abstract

As the human population and demand for food grow¹, the ocean will be called on to provide increasing amounts of seafood. Although fisheries reforms and advances in offshore aquaculture (hereafter ‘mariculture’) could increase production², the true future of seafood depends on human responses to climate change³. Here we investigated whether coordinated reforms in fisheries and mariculture could increase seafood production per capita under climate change. We find that climate-adaptive fisheries reforms will be necessary but insufficient to maintain global seafood production per capita, even with aggressive reductions in greenhouse-gas emissions. However, the potential for sustainable mariculture to increase seafood per capita is vast and could increase seafood production per capita under all but the most severe emissions scenario. These increases are contingent on fisheries reforms, continued advances in feed technology and the establishment of effective mariculture governance and best practices. Furthermore, dramatically curbing emissions is essential for reducing inequities, increasing reform efficacy and mitigating risks unaccounted for in our analysis. Although climate change will challenge the ocean’s ability to meet growing food demands, the ocean could produce more food than it does currently through swift and ambitious action to reduce emissions, reform capture fisheries and expand sustainable mariculture operations.