Abstract
The article presents the results of the analysis of literature and original data on Nitellopsis obtusa (Desv.) J.Groves (Charophyta, Charales) included in Red Data Book of Ukraine and peculiarities of its distribution in Ukraine. This relict species is also regionally red-listed in its native Eurasian range within temperate and subtropical latitudes from Portugal to Japan but invasive in North America, in the Great Lakes region, because of an accidental introduction in 20th century. In Central and Eastern Europe N. obtusa is a rather common species but it happens everywhere rather sporadically. Its distribution is limited by such factors as a type of water body, total mineralization, ionic composition of water and pH. Totally 26 localities of N. obtusa have been recorded, including historical, lost, and existing ones. A list of localities, and a map of the distribution of this species in Ukraine have been compiled and analyzed. All of them were found within the Pripyat-Desna, Middle Dnieper, Dnieper-Black Sea algofloristic subprovinces. However, the characteristic of their location confirms the trend of distribution of N. obtusa in Ukraine only in the valleys of large rivers, which is most likely due to the absence of large lakes with stable hydrological and hydrochemical regimes, as well as ecological and biological features of the species.
Publisher
National Academy of Sciences of Ukraine (Co. LTD Ukrinformnauka) (Publications)
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