| Autor: |
I. A. Safaraliev, V. V. Barabanov, O. A. Maznikova |
| Rok vydání: |
2023 |
| Předmět: |
|
| Zdroj: |
Trudy VNIRO. 191:25-36 |
| ISSN: |
2307-3497 |
| DOI: |
10.36038/2307-3497-2023-191-25-36 |
| Popis: |
The aim of the paper is a qualitative assessment of the stock of long - clawed crayfish on the basis of the indicator approach.Methods used: indicator approach of qualitative stock assessment, methods of descriptive statistics, regression analysis.Novelty: a qualitative assessment of the stocks of long - clawed crayfish in the Astrakhan region by the indicator approach has not been previously carried out.Result: Qualitative assessments of the state of the stock of long- clawed crayfish in the Astrakhan region in 2016-2020 were obtained. The results of the assessments showed that in 2016, 2019 and 2020 its stock in the Astrakhan region was in an uncertain state (an integral assessment showed no dynamics in the state of the stock for the worse or better), and in 2017 and 2018 - in the alarming state (the integral assessment showed a negative trend in the state of the stock). The final integral assessment made it possible to formulate recommendations for the further exploitation of the stock of this species of hydrobiont.Practical significance: this study represents the application of the indicator approach in the biological sub -stantiation of the assessment of the total allowable catch of long - clawed crayfish in the Astrakhan region. |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
|
