Models for forecasting sandfish catch in the coastal waters off Akita Prefecture and the evaluation of the effect of a 3-year fishery closure

Sakuramoto, Kazumi; Sugiyama, Hideki; Suzuki, Naoki

doi:10.1046/j.1444-2906.2001.00241.x

Cited by 16 publications

(17 citation statements)

References 1 publication

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The relationship between catch and SST obtained and the methodology used here are very similar to those obtained by Sakuramoto et al. , 18,19 Oh et al. , 9 and Watanabe 21 .…”

Section: Discussionsupporting

confidence: 88%

“…Sakuramoto et al. indicated that the huge fluctuation of sandfish catch in Akita Prefecture could be explained well by the water temperature in September at 200–300 m depths at 5 km off the Oga Peninsula of Akita Prefecture 18,19 . Noto and Yasuda discussed the population decline of the Japanese sardine and indicated that the winter‐spring SST in the Kuroshio Extension is a controlling factor that determines the strength of the year‐class 20 .…”

Section: Discussionmentioning

confidence: 99%

See 1 more Smart Citation

Relationship between sea-surface temperature and catch fluctuations in the Pacific stock of walleye pollock in Japan

Sakuramoto

Hasegawa³

et al. 2005

Fisheries Sci

Self Cite

View full text Add to dashboard Cite

This paper investigates the relationship between sea-surface temperature (SST) and catch fluctuations in the Pacific stock of walleye pollock Theragra chalcogramma in Japan. Incorporating time lags between years of birth and harvest, the correlation coefficients between the catch and SST in two regions off the east coast of Hokkaido were calculated. The catch in year t had a high negative correlation with the SST during January-April and November-December of the years t-2 and t-3 in the spawning area. These results coincided well with the correlation observed in the northern 'Sea of Japan' stock. Both analyses suggested that the long-term catch fluctuations of the two stocks could be explained by the same mechanism, that is, the fluctuations would be explained by the SST in their spawning area during the spawning season using 2-3 or 3-5 years time lags, which corresponded to the dominant age of the catch within these two stocks.

show abstract

“…The relationship between catch and SST obtained and the methodology used here are very similar to those obtained by Sakuramoto et al. , 18,19 Oh et al. , 9 and Watanabe 21 .…”

Section: Discussionsupporting

confidence: 88%

Section: Discussionmentioning

confidence: 99%

Relationship between sea-surface temperature and catch fluctuations in the Pacific stock of walleye pollock in Japan

Sakuramoto

Hasegawa³

et al. 2005

Fisheries Sci

Self Cite

View full text Add to dashboard Cite

show abstract

“…Sakuramoto et al (2001) stated that the 3-year fishing closure off Akita Prefecture appeared to be related to NSJ catch recovery in Akita Prefecture, based on a simulation using the NSJ coastal catch model, although environmental conditions were unfavorable during the fishing moratorium. Our simulation indicated that the biomass in 1991 prior to the fishing moratorium was at least 5Â the actual biomass in 1991 when harvesting was regulated in the 1970s-1980s.…”

Section: Management Implicationsmentioning

confidence: 99%

Dynamics of two sailfin sandfish (Arctoscopus japonicus) stocks in the Sea of Japan, and their management

Watanabe

Sakuramoto

Sugiyama

et al. 2011

Can. J. Fish. Aquat. Sci.

Self Cite

View full text Add to dashboard Cite

The dynamics of the northern and western Sea of Japan sailfin sandfish (Arctoscopus japonicus) stocks (NSJ and WSJ, respectively) varied simultaneously until the mid-1970s but differently thereafter. To identify the mechanisms underlying these dynamics, we evaluated the impact of environment and harvesting on NSJ by developing a recruitment model and simulating NSJ dynamics. The model was constructed based on egg production, density effect, and water temperatures in winter and spring, which correlated significantly and positively with the estimated surface mixed-layer depth. Winter water temperatures and egg production were variables common to the two stocks. Our results suggest that simultaneous dynamics resulted from similarities in variations in winter water temperatures for each stock and the difference in dynamics resulted from NSJ depletion caused by overfishing. We suggest management strategies to prevent NSJ depletion caused by unfavorable environmental conditions and overfishing, as well as to allow improved biomass recovery while taking advantage of favorable environmental conditions, and avoid further exploitation of previously depleted NSJ.Résumé : Les dynamiques des stocks du toroumoque japonais (Arctoscopus japonicus) du nord et de l'ouest de la mer du Japon (respectivement NSJ et WSJ) ont varié de concert jusqu'au milieu des années 1970 pour différer par la suite. Afin d'identifier les mécanismes sous-jacents à ces dynamiques, nous avons évalué l'impact de l'environnement et de la récolte sur le stock NSJ en mettant au point un modèle de recrutement et en simulant la dynamique du stock NSJ. Le modèle est construit sur la base de la production d'oeufs, de l'effet de la densité, et des températures de l'eau en hiver et au printemps, qui sont en corrélation significative et positive avec la profondeur estimée de la couche de mélange de surface. Les tempé-ratures de l'eau en hiver et la production d'oeufs sont des variables qui s'appliquent aux deux stocks. Nos résultats indiquent que la dynamique simultanée résulte de ressemblances dans les variations dans les températures d'hiver pour les deux stocks et que les différences de dynamique s'expliquent par un déclin du stock NSJ à cause de la surpêche. Nous proposons des stratégies de gestion pour empêcher le déclin du stock NSJ causé par les conditions environnementales défa-vorables et la surpêche, ainsi que pour permettre une meilleure récupération de la biomasse en profitant des conditions environnementales favorables et pour éviter une exploitation supplémentaire du stock NSJ déjà réduit.[Traduit par la Rédaction]

show abstract

“…It is useful for developing a catch forecasting model in order to manage snow crab populations. Sakuramoto et al 10 . discussed the fluctuation in sandfish catch by using catch forecasting models incorporating environmental factors.…”

Section: Introductionmentioning

confidence: 99%

Catch forecasting and relationship between water temperature and catch fluctuations in snow crab Chionoecetes opilio in the western Sea of Japan

et al. 2007

Self Cite

View full text Add to dashboard Cite

Catch forecasting and the relationship between water temperature and catch in the snow crab Chionoecetes opilio in the western Sea of Japan were investigated. Catch was used as an index of abundance on the basis of high correlations between catch per unit effort for the period when the latter data were available. The pattern of fluctuations in catches and index coincided well with each other. Therefore, catch data were regarded as an index of abundance and the correlation coefficient between catch and water temperature was calculated at several depths from 1964 to 1999. Catch forecasting models were composed using significantly correlated variables with the following results: (i) in April and September, the catch showed high positive correlation with water temperatures (depth 50, 100, and 200 m, time lag 4-6 years); and (ii) a model using water temperatures in April alone (depth 100 m, time lag 4-7 years) forecasted the catches with a coefficient of determination of 0.504, where models using more variables (water temperatures in the 2 months and catches) showed a coefficient of 0.587 at most. Environmental conditions during the early life stages of the snow crab are thought to deeply influence the fluctuations in abundance.KEY WORDS: catch forecasting, Chionoecetes opilio, mechanism of catch fluctuation, snow crab, water temperature, western Sea of Japan.

show abstract

Models for forecasting sandfish catch in the coastal waters off Akita Prefecture and the evaluation of the effect of a 3-year fishery closure

Cited by 16 publications

References 1 publication

Relationship between sea-surface temperature and catch fluctuations in the Pacific stock of walleye pollock in Japan

Relationship between sea-surface temperature and catch fluctuations in the Pacific stock of walleye pollock in Japan

Dynamics of two sailfin sandfish (Arctoscopus japonicus) stocks in the Sea of Japan, and their management

Catch forecasting and relationship between water temperature and catch fluctuations in snow crab Chionoecetes opilio in the western Sea of Japan

Contact Info

Product

Resources

About