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The study of coenotic species in forest herb layers enables detection of ecosystem-level changes, with research in protected areas providing a foundation for long-term monitoring. This study assessed Stellaria holostea L. populations in forest phytocoenoses of Desniansko-Starohutskyi National Nature Park, typical of the Sumy Polissia region. Populations were surveyed in various forest types: Pinetum (sylvestris) convallarioso (majalis) - hylocomiosum, Pinetum (sylvestris) vaccinioso (myrtilli) - moliniosum (caerul...

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 ...