Species, taxonomic and ecological diversity of phytoplankton of the Kiliya Danube delta

  • D. A. Lutsenko Institute of hydrobiology of National academy of sciences of Ukraine
Keywords: phytoplankton, Kiliya Danube delta, saprobity, Bacillariophyta, Chlorophyta

Abstract

An integral component of the biota of aquatic ecosystems is phytoplankton, which plays a fundamental role in the formation of the autotrophic link. The Danube delta is characterized by unique biotopes, which are characterized by a high diversity of species. Phytoplankton is an indicator of the quality of the aquatic environment and is a convenient object for research, as it can quickly respond to changes in the ecosystem. Phytoplankton species diversity of the Kiliya Danube Delta in the summer of 2019 includes 158 species and intraspecific taxa belonging to 8 divisions. The most numerous are the division Bacillariophyta (52 intraspecific taxons) and Chlorophyta (45 intraspecific taxons); orders Sphaeropleales (24), Naviculales (16), Euglenida (15), Chlorellales (13); families: Euglenidae (9), Scenedesmaceae (9), Naviculaceae (8), Selenastraceae (7), and genera Nitzschia (6), Navicula (5), Monoraphidium (5), Trachelomonas (5), Lepocinclis (5). The phototrophic link is formed mainly by diatoms and green phytoplankton planktonic and planktonic-benthic forms and indicates a dynamic hydrological regime of the object. According to saprobic species indicators, the diversity is dominated by β-saprobic (46%) and oligosaprobic (28%) forms. The water of the Kiliya Danube delta corresponds to class III in terms of organic pollution. water quality, which is characterized as "moderately polluted" and refers to β-saprobic waters. To determine the similarity of the floristic spectrum presented in different sampling locations, Sorensen coefficients in the range from 0.10 to 0.46 were calculated. types of diversity, in terms of amplitude, the stations on the Danube River (Reni, port) and the Kiliya delta (below the sea station) are most similar to each other, other areas are less similar to each other. It was found that, based on the similarity of the floristic spectrum presented in the samples, the Sorensen coefficients are quite low, and it is justified by the geographical location of the studied object, the dynamics of its hydrological regime, and different environmental conditions. The phytoplankton of the Kiliya Danube delta has a wide spectrum of species diversity relative to its spatial distribution.

References

Abakumov, V. A., Sushchenya, L. M. (1991). Gidrobiologichesky monitoring presnovodnyx ekosystem i pyti ego sovershenstvovania: Ekologicheskie modifikacii i kriterii ekologicheskogo normirovania. [Hydrobiological monitoring of freshwater ecosystems and ways to improve it: ecological modifications and criteria for ecological regulation]. Hydrometeorological Publishing House.  Leningrad, 4152 (in Russian).



AlgaeBase. Retrieved from http://www.algaebase.org.



Barinova, S. S., Bilous, E. P., Tsarenko, P. M. (2019). Algoindeksacia vodhux ob'ektov Ukrainu: metodu i perspektivu. [Algoindication of water bodies in Ukraine: methods and prospects]. Haifa University Press. Haifa, Kyiv (in Russian).



Ivanov, A. I. (1982). Fitoplankton ystevix oblastey rek severo-zapadnogo Prichernomoria. [Phytoplankton of the mouth areas of the rivers of the northwestern Black Sea region]. "Naukova Dumka". Kyiv (in Russian).



Ivanov, A. I. (1987). Fitoplankton sovetskogo ychastka Dynaya i zalivov perednego kraya ego Kiliuskoi del'ti. [Phytoplankton of the Soviet section of the Danube and the bays of the front edge of its Kiliya delta]. Hydrobiological studies of the Danube and Danube water bodies, 4457 (in Russian).



Mal'tsev, V. І., Karpova, G. O., & Zub, L. M. (2011). Viznachennya yakostі vodi metodami bіoіndikatsіi: naukovo-metodichniy posіbnik. Kyiv: Naukoviy tsentr ekomonіtoringu ta bіorіznomanіttya megapolіsu NANU; Nederzhavna naukova ustanova Іnstitut ekologіi ІNEKO (in Ukrainian).



Odum, E. P. (1975). Osnovi ekologii. [Fundamentals of ecology]. Mir. Moskow, 140144 (in Russian).



Oksiuk, O. P., Zhukinsky, V. N., Braginsky, L. P., Linnik, P. N., Kuzmenko, M. I., Klenus, V. G. (1993). Kompleksnaya ekologicheskaya klasifikaciya kachestva poverfnosti vod syshi. [Integrated ecological classification of land surface water quality.] Instytut Hidrobiolohiyi Natsionalʹnoyi Akademiyi Nauk Ukrayiny. Hydrobiological Journal, 39(4),  6276 (in Russian).



Oksiyuk, O. P., Davydov, O. A., Melenchuk, G. V. (2005). Formirovanie vidovogo raznoobraziya fitoplanktona na rechvix ychastkax dniprovskix vodoxranilichax. [Formation of phytoplankton species diversity in the river sections of the Dnieper reservoirs.]. Algology, 15(1), 78–85 (in Russian).



Roll, Y. V. (1961). Fitoplankton sovetskogo ychastka Dynaya, ego rukavov zalivov [Phytoplankton of the Soviet section of the Danube, its branches of the bays.] "Danube and Danube reservoirs within the USSR". Academy of Sciences of the Ukrainian SSR. Kyiv (in Russian).



Romanenko, V. D. (Ed.). (2006). Metodu viznachenya xarakteristik golovnux ugrupunan' gidrobiontiv vodnix ekosystem. [Methods for determining the characteristics of the head groups of hydrobionts in aquatic ecosystems: Methods of hydroecological studies of surface waters] Institute of Hydrobiology of the National Academy of Sciences of Ukraine. Kyiv, 827 (in Ukrainian).



Shcherbak, V. I. (2002). Metodu doslidjenya fitoplanktony. Metodichni osnovi gidrobiologichnux doslidjen' vodnux ekosystem.[ Methods for the study of phytoplankton: Methodological foundations of hydrobiological studies of aquatic ecosystems]. Instytut Hidrobiolohiyi Natsionalʹnoyi Akademiyi Nauk Ukrayiny. Kyiv, 4147 (in Ukrainian).



Vasenko, A. G., Vernichenko, A. A., Vernichenko-Tsvetkov, D. U. (2013). Nekotorie aspekti postroeniya ocenochnix shkal ekologicheskix klasifikaciy poverhnosti vod. [Some Aspects of Construction of Evaluation Scales for Ecological Classifications of Surface Waters.] Ecosystems, their optimization and protection, 8, 146153 (in Russian).



Vasenko, A. G., Vernichenko, A. A., Vernichenko-Tsvetkov, D. U., Lungu,M. L., Milanich, A. U., Pristinskaya, A. S. (2015). Analiz izmenchivosti stryktyrnix i funkcionalnux pokazateley fitoplanktona nuzonun Dynaya i ego delti v predelax Ukrainu. [Analysis of the variability of structural and functional indicators of phytoplankton in the lower reaches of the Danube and its delta within Ukraine.] Bulletin of Cherkasy University. ser. Biological sciences, 1, 3548 (in Rusian).


Abstract views: 18
PDF Downloads: 23
Published
2022-06-06
How to Cite
Lutsenko, D. (2022). Species, taxonomic and ecological diversity of phytoplankton of the Kiliya Danube delta. Ecology and Noospherology, 33(1), 49-54. https://doi.org/https://doi.org/10.15421/032208