Diversity of Phytoplankton and Water Quality in the Danube River During Spring 2019
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TUMANOVA, Daria, UNGUREANU, Laurenţia, ANDREEV, Nadejda, ENE, Antoaneta, TEODOROF, Liliana. Diversity of Phytoplankton and Water Quality in the Danube River During Spring 2019. In: MONITOX International Symposium “Deltas and Wetlands”, 15-17 septembrie 2019, Tulcea. Tulcea, România: C.I.T.D.D. Tulcea, 2019, pp. 40-41. ISBN 978-606-8896-00-7.
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MONITOX International Symposium “Deltas and Wetlands” 2019
Simpozionul "MONITOX International Symposium “Deltas and Wetlands”"
Tulcea, Romania, 15-17 septembrie 2019

Diversity of Phytoplankton and Water Quality in the Danube River During Spring 2019


Pag. 40-41

Tumanova Daria1, Ungureanu Laurenţia1, Andreev Nadejda1, Ene Antoaneta2, Teodorof Liliana3
 
1 Institute of Zoology,
2 "Dunarea de Jos" University of Galati,
3 Danube Delta National Institute for Research and Development
 
Disponibil în IBN: 25 martie 2020


Rezumat

Research on phytoplankton was carried out during spring 2019, samples were collected from Danube River Saint George Branch and Sulina Branch. Sampling and analysis of phytoplankton was carried out by conventional hydrobiological methods. During spring 2019 the diversity of quantitative parameters of phytoplankton, as well as the water quality, using algae species as indicators of saprobity were assessed. In phytoplankton compositions of the Danube River Saint George Branch were identified 15 species and in Sulina Branch-16 species. It was found that in these branches of the river Danube the phytoplankton species of the following groups predominated: Cyanophyta, Bacillariophyta and Chlorophyta. The basis of the floristic diversity of Danube branches consists of species: Oscillatoria lacustris, Oscillatoria planctonica, Synechocistys aquatilis from green algae, Asterionella formosa, Cyclotella kuetzingiana, Gomphonema olivaceum, Gyrosigma acuminatum,Melosira italica,Melosira granulata, Navicula cryptocephala, Nitzschia sigmoidea, Synedra acus from diatoms algae, Monoraphidium Komarkovae, Monoraphidium contortum and Scenedesmus quadricauda from green algae. The number of phytoplankton species in Saint George Branch did not exceed 7.16 mln. cel/l with a biomass 7.56 g/m3 and in Sulina Branch 3.05 mln. cel/l with biomass 7.37 g/m3. In both Danube branches was attested the preponderance of Cyanophyta in the forming of the number of algae species and Bacillariophyta algae in the formation of phytoplankton biomass. The saprobic index values were established within 1.83 at Saint George Branch and 1.8 at Sulina Branch. The values of saprobic indices were estimated on the basis of species-indicators (19 species) from phytoplankton composition, which were in proportion of 63 % typically -mezosaprobic. According to these indices, the water quality of Danube River St. George part in the spring time was satisfactory for the development of phytoplankton and was attributed mainly to II-III (good-moderately polluted) quality classes. Acknowledgement: This work was supported by the project BSB27 - MONITOX funded by the Joint Operational Programme Black Sea Basin 2014-2020. The content of this publication is the sole responsibility of the authors and in no way reflect the views of the European Union.