Potential predictability of skipjack tuna (Katsuwonus pelamis) catches in the Western Central Pacific
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Title
- Potential predictability of skipjack tuna (Katsuwonus pelamis) catches in the Western Central Pacific
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Author(s)
- Kim J.; Na H.; Park Y.-G.; Kim Y.H.
- KIOST Author(s)
- Park, Young Gyu(박영규)
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Alternative Author(s)
- 박영규
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Publication Year
- 2020-02
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Abstract
- The Pacific Island countries have a substantial socio-economic dependency on fisheries. Skipjack tuna is one of the most important species in the Western Central Pacific (WCP) and its catches in this region exhibit a spatio-temporal variability influenced by ocean conditions, mainly the El Nino-Southern Oscillation (ENSO). This study investigates the relationship between skipjack tuna catch amounts and environmental variables in the equatorial Pacific during 1990-2014, and evaluates the potential predictability of the catches based on their statistical relationship. A series of regressed and reconstructed spatial patterns of upper-ocean temperature, salinity, currents and precipitation represent ENSO-like variability, and their principal component time series are used to estimate the predictability of skipjack tuna catches in the Federated States of Micronesia (FSM). ENSO-like variability depicted from 100 m temperature and 5 m salinity in the equatorial Pacific exhibit a significant predictability for the annual catch amount in the FSM for several years with a training period of > 20 years. This suggests that the subsurface temperature or near surface salinity can be a better predictor of ecosystem variability than widely used sea surface temperature. Applications of this result to other species could have broad implications for the fishery industry in the WCP.
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ISSN
- 2045-2322
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URI
- https://sciwatch.kiost.ac.kr/handle/2020.kiost/38735
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DOI
- 10.1038/s41598-020-59947-8
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Bibliographic Citation
- SCIENTIFIC REPORTS, v.10, no.1, pp.3193, 2020
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Publisher
- NATURE PUBLISHING GROUP
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Type
- Article
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Language
- English
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Document Type
- Article
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