Abstract
The accuracy of estimating the relative abundance of generations of fish species under conditions of incomplete initial information is analyzed. Using the example of bream from the Kuibyshev Reservoir, it is shown that, if the information on the age structure is lost for 1 to 8 years, the error in estimating the abundance of generations averages from 5 to 15%. This makes it possible to apply this modification of the method of loss from fishing to estimate the abundance of fish generations in the current conditions. This method of estimating the number of generations may be useful in the analysis not only of fish, but also of other aquatic organisms.
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ACKNOWLEDGMENTS
We thank M.A. Gvozdareva and S.A. Udachin (Russian Federal Research Institute of Fisheries and Oceanography, Tatar Branch) for estimating the abundance of fish generations upon different variants of eliminating the initial data.
Funding
This study was performed within the framework of a state assignment (no. ААА-А18-118012690102-9) and partially supported by the Russian Foundation for Basic Research, project no. 18-44-160023 r_а.
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Translated by N. Ruban
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Tereshchenko, V.G., Kuznetsov, V.A., Shakirova, F.M. et al. Accuracy of Assessing the Abundance of Fish Generations under Conditions of Incomplete Initial Information. Inland Water Biol 13, 98–103 (2020). https://doi.org/10.1134/S1995082920010162
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DOI: https://doi.org/10.1134/S1995082920010162