danДоклады Национальной академии наук БеларусиDoklady of the National Academy of Sciences of Belarus1561-83232524-2431The Republican Unitary Enterprise Publishing House "Belaruskaya Navuka"10.29235/1561-8323-2025-69-5-399-403dan-1274Research ArticleБИОЛОГИЯBIOLOGYСоотношение между видовым богатством и численностью видов в сообществах макрозообентоса (на примере створов рек бассейна Немана)Relationship between species richness and abundance in macrozoobenthos communities (based on the example of river section in the Neman basin)СеменченкоВ. П.SemenchenkoV. P.

Семенченко Виталий Павлович – член-корреспондент, д-р биол. наук, профессор, гл. науч. сотрудник.

Ул. Академическая, 27, 220072, Минск

Semenchenko Vitaly Р. – Corresponding Member, D. Sc. (Biology), Professor, Chief Researcher.

27, Akademicheskaya Str., 220072, Minsk

semenchenko57@mail.ruНаучно-практический центр Национальной академии наук Беларуси по биоресурсамScientific and Practical Center for Bioresources of the National Academy of Sciences of Belarus202506112025695399403Copyright © Семенченко В.П., 20252025Семенченко В.П.Semenchenko V.P.Данная работа распространяется под лицензией Creative Commons Attribution 4.0.This work is licensed under a Creative Commons Attribution 4.0 License.https://doklady.belnauka.by/jour/article/view/1274

Проведен анализ рангового распределения численности видов макрозообентоса и его взаимосвязи с числом видов для различных створов рек бассейна Немана. Показано, что число видов макрозообентоса связано с их общей численностью, а структура ранжирования таксонов по численности соответствует логнормальному распределению. Коэффициент выравненности структуры сообществ составил в среднем 0,7. В изученных сообществах макрозообентоса отмечена низкая степень перекрытия экологических ниш, что обусловлено широким спектром функциональных трофических групп макрозообентоса и, как следствие, низким уровнем конкуренции между ними.

Rank distribution of macrozoobenthos abundance on the different sites of the Neman River basin was analyzed. The number of species correlated with the total abundance of macrozoobenthos. The type distribution of species corresponded to the lognormal distribution. The evenness coefficients in communities averaged 0.7. The low coefficient of the relationship between evenness and total abundance of macrozoobenthos species (r = 0.28, р > 0.05) indicated a slight overlap of ecological niches in the macrozoobenthos communities. This was due to wide range of functional trophic groups that leads to reduce competition between species.

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The authors declare that there are no conflicts of interest present.