2022 Fiscal Year Final Research Report
Statistical study on the establishment of the basis for a spatio-temporal model-based method of analysing fisheries resources.
| Project/Area Number |
19K11855
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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| Allocation Type | Multi-year Fund |
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| Section | 一般 |
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| Review Section |
Basic Section 60030:Statistical science-related
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| Research Institution | Tokyo University of Marine Science and Technology |
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Principal Investigator |
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| Project Period (FY) |
2019-04-01 – 2023-03-31
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| Keywords | 時空間分布 / 統計モデル / マグロ類 / サンマ |
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| Outline of Final Research Achievements |
In this study, statistical modelling and estimation methods for understanding the patterns of spatial distribution of organisms and their temporal changes were studied mainly for highly migratory fisheries resources such as tunas, with the aim of establishing and applying the basis of spatio-temporal models for the advancement of fisheries population analysis. This work enabled the extraction of an indicator of population dynamics from spatial information, the application of size-specific spatio-temporal distribution modelling, and modelling of changes in the distribution of tuna stocks due to future climate change.
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| Free Research Field |
統計科学
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| Academic Significance and Societal Importance of the Research Achievements |
水産資源の持続的かつ有効な利用には，資源量の時間的変化に加えて，資源の時空間分布を適切に捉えることが望ましいが，水産生物の場合には直接観察することができず，観測と現象を適切に表現する統計的モデルングと推測方法が必須となる．本研究の結果は，実際にマグロ類やサンマの国際会議において成果として報告し，一部は実際の資源解析および管理に利用された．また，将来の気候変動による資源の空間分布変化を捉えるための重要な基礎研究とも位置付けられる．
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