Algofloristic studies of the Kuyalnyk estuary basin reservoirs (North-Western Black Sea Coast, Ukraine)

• Дата: 2022
• Автори: Ennan, A.A.-А., Shikhaleeva, G.M., Tsarenko, P.M., Kiryushkina, H.M., Gerasimyuk, V.P.
• Формат: Стаття
• Мова: Ukrainian
• Опубліковано: M.G. Kholodny Institute of Botany, NAS of Ukraine 2022
• Онлайн доступ: https://algologia.co.ua/journal/article/view/32.2.105
• Назва журналу: Algologia

This paper presents a review of long-term (2001–2018) original studies of the algae flora of the hyperhaline Kuyalnyk estuary, 6 tributaries flowing into it (rivers, streams, water channels from ponds), ephemeral reservoirs located along the estuary and 5 adjacent reservoirs of different types (ponds, reservoirs). The features of distribution algae species in Kuyalnyk estuary and distribution of these organisms in the water bodies of the estuary basin, as well as the main environmental factors influencing the formation of their species composition are analyzed. A total of 270 species (274 ist) of algae (phytoplankton, micro- and macrophytobenthos, periphyton) from 9 divisions (Cyanoprokaryota – 45 species (46 ist), Bacillariophyta – 159 species (161 ist), Chlorophyta – 37 species (38 ist), Euglenophyta – 16 species, Charophyta – 7 species, Chrysophyta – 3 species, Xanthophyta, Dinophyta and Haptophyta – 1 species each. Diatom algae (Bacillariophyta) – 61 species (82% of the total number of species found in each of the studied reservoirs) with a predominance of species of the genus Navicula prevail in terms of species richness in the algae flora of the estuary basin. Second and third places are shared by Cyanoprokaryota and Chlorophyta. At the time of the study, 18 species of macrophytes were identified in these water bodies. A number of identified species are characterized by high physiological fitness and rapid response to changes in environmental conditions: Phormidium breve (Kütz. ex Gomont) Anagn. et Komárek, Spirulina major Kütz., S. meneghiniana (Zanardini ex Gomont) W.B.Grow, Cyclotella meneghiniana Kütz., Ctenophora pulchera (Raits ex Kütz.) D.M.Williams ex Round, Rhoicosphenia abbreviata (C.Agardh.) Lange-Bert., Tabularia tabulata (C.Agardh) Snoeijs, Ulnaria ulna (Nitzsch.) Compere, Achnanthes brevipes C.Agardh var brevipes, Platesa salinarum (Grunow) Lange-Bert., Fallacia pygmaea (Kütz.) Stick et D.G.Mann, Navicula cryptocephala Kütz., N. gregaria Donkin, Bacillaria paxillifera (O.Müll.) T.Marsson, Cylindrotheca closterium (Ehrenb.) Reimann et G.C.Levin, Tryblionella apiculata W.Greg., T. hungarica (Grunow) Frenguelli, Surirella striatula Turpin, S. minuta Bréb. ex Kütz., Dunaliella Salina (Dunal) Teodor. Mineralization as a factor influencing the structure of algal communities is most severe in the Kuyalnyk estuary, in the confluence of the tributaries and estuaries, controlling the composition of dominant species.