ISSN 2519-8513 (Print) Biosystems ISSN 2520-2529 (Online) Biosyst. Divers., 26(2), 160–169 doi: 10.15421/011825 Diversity Long-term dynamics of flora of karst lakes: Changes and current state E. A. Belyakov*, **, E. V. Garin* *Papanin Institute for Biology of Inland Waters RAS, Borok, Russia **Cherepovets State University, Cherepovets, Russia Article info Belyakov, E. A., & Garin, E. V. (2018). Long-term dynamics of flora of karst lakes: Changes and current state. Received 19.04.2018 Biosystems Diversity, 26(2), 160–169. doi:10.15421/011825 Received in revised form 07.05.2018 Long-term observations of the rates and pattern of changes in flora and vegetation contribute to understanding of one Accepted 10.05.2018 of the most important contemporary global problems, the eutrophication of water bodies. In this study, using classical floristic methods, we attempt to determine (for a period of almost 80 years) the nature and possible causes of changes in I. D. Papanin Institute for Biology of Inland Waters RAS, the floristic composition of the lakes of karst origin, Velikoe and Parovoe (Pustinskaya lake-river system, the right bank of Borok, 152742, Yaroslavl Nizhny Novgorod oblast). The paper shows that over a long period of observations a significant transformation of the Oblast, Russia. vegetation cover has occurred in the lakes. The process was accompanied by the disappearance of a number of native Tel.: +748-547-24-042 species and appearance of others, including adventitious ones (for example, Elodea canadensis Michx., Zizania latifolia E-mail:
[email protected] (Griseb.) Stapf, Bidens frondosa L. and Epilobium adenocaulon Hausskn.).