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Nymphoides peltata is a typical representative of higher aquatic plants. Despite its wide geographical distribution, N. peltata is a rather rare species. The development of effective measures to protect a species in any territory is possible only if there is complete information on the status of its populations. Study of the size and morphological structure of plants plays an important role in the system of population studies. The purpose of this publication is to characterise the dimensional values of N. peltata ...

The article presents the results of population studies conducted in the floodplain of the Seim River within Sumy region, Ukraine. The ontogenetic and vitality structures populations of Potentilla erecta and Althaea officinalis. During the study, the following methods were used: the geobotanical method, morphometric analysis, complex vitality analysis. In general, for the region of research on P. erect- priority is the introduction of active protection measures aimed at increasing the distribution centers and the f...