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The influence of the climatic and oceanological conditions on the stock dynamics of some commercial species of pelagic and bottom fish communities of the eastern part of the Sea of Okhotsk

Source :
The researches of the aquatic biological resources of Kamchatka and the North-West Part of the Pacific Ocean. 1:5-34
Publication Year :
2020
Publisher :
Kamchatka Research Institute of Fisheries and Oceanography, 2020.

Abstract

Stepwise multidimensional regressive analysis was carried out based on the long-term data (1971–2018), including biological statistics and series of observations on 10 climate indices, allowing to identify the most meaningful climatic factors affecting the numbers of some fish species at different stages of the ontogenesis in the Eastern part of the Sea of Okhotsk. All the results obtained indicate of existing true correlations with the number of the two-years-old individuals and the number of the fish reached the age of the mass (>50%) maturation. Threedimension regression models, describing the dynamics of the initial number of some fish satisfactorily. Were made, based on the obtained equations of multiple regression of the relationship between the number of the fish and the most effective climatic indices selected. The major indices affecting the abundance of different fish species are: SST, NPGO, SanSpot – Pacific herring; NPA – saffron cod; PDO – Pacific cod; NPA, SanSpot – great sculpin; SanSpot, PNA, AO – yellowfin sole; PDO, SSTa – Pacific halibut; Ice SanSpot, NPGO – Greenland turbot. Pelagic, demersal and bottom species are under the complex influence of the oceanographic, meteorological and planetary-space indices.

Details

ISSN :
20728212
Volume :
1
Database :
OpenAIRE
Journal :
The researches of the aquatic biological resources of Kamchatka and the North-West Part of the Pacific Ocean
Accession number :
edsair.doi...........a867285c503f1bce5e73f4e84d76e4b2
Full Text :
https://doi.org/10.15853/2072-8212.2020.56.5-34