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- W3115231055 abstract "Goal. To determine and analyze the structural and quantitative parameters of secondary commercial species of the Kremenchug reservoir. Methodology. The data of commercial catches of the Kremenchug reservoir for 2009–2019 were used as primary materials. The methods generally accepted for ichthyological studies were used for the sampling and further analysis Findings. Commercial catches of native fish species belonging to the category of secondary large species (catfish, pike, asp, chub) in the Kremenchug reservoir in recent years show a tendency for an increase: in 2010-2014 their landing was at 78 tons, in 2015 - 104 tons, in 2016 - 107 tons, in 2017 - 134.9 tons. This increase was mainly (by 65%) ensured catfish, to a lesser extent (by 30%) by pike. In 2018, there was a significant decrease in landings in this category to 116.1 tons, in 2019 - again an increase to 140.7 tons. A similar trend was observed for the category of secondary small-sized species (perch, knife, rudd, tench): in 2010-2014 the catch did not exceed 66 tons, in 2015 - 104 tons, in 2016 - 107 tons, in 2017 - 97 tons. In recent years, the maximum catches of commercial native fish species belonging to this category were observed, e.g., 179.6 tons in 2018, 175.3 tons in 2019. Due to a low abundance of these species, both commercial and survey catches have a certain instability, while there is a lack of clear trends in the dynamics of structural and functional parameters of catches. The main factor that limits the statistics of this category is the organization of fishing and accounting of landed fish. Originality. For the first time, data on commercial catches of native fish species belonging to the category of secondary large species and secondary small species in the Kremenchug reservoir in recent years have been obtained and analyzed. Practical significance. The obtained results will be used for preparation of the fishing regime in the Kremenchug reservoir. Improving the level of organization of fishing and accounting of landed fish. Keywords: reservoir, secondary large species, secondary small species, commercial catch." @default.
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- W3115231055 date "2020-12-28" @default.
- W3115231055 modified "2023-09-25" @default.
- W3115231055 title "Current state of secondary commercial species populations in the Kremenchutskе reservoir" @default.
- W3115231055 doi "https://doi.org/10.15407/fsu2020.04.047" @default.
- W3115231055 hasPublicationYear "2020" @default.
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