Cyanoprokaryota of salt marshes were investigated at three scientific sites: in the
upper Utlyuk Estuary, on the coast of Lake Sivashik, and at Fedotov Spit. Data on species
composition, systematic structure, leading families, and genera are provided. In total, 71 species of
cyanoprokaryotes representing 3 orders, 10 families, and 22 genera. The dominant complex included
representatives of the genera Schizothrix Kützing ex Gomont, Phormidium Kützing ex Gomont,
Lyngbya C.Agardh ex Gomont, Leptolyngbya (Gomont) Anagnostidis & Komárek, Trichormus
(Ralfs ex Bornet & Flahault) Komárek & Anagnostidis, Nostoc Vaucher ex Bornet & Flahault, and
Nodularia Mert. ex Born. & Flah. The identified species are analyzed for their biotopic nature and
their valence to the level of environmental salinity. The distribution of the identified species within
the Ukrainian territory is considered
