Soil algae in urban ecosystems of the city of Mariupol

  • O. G. Shekhovtseva Melitopol State Pedagogical B. Khmelnytsky University
Keywords: biodiversity, soil algae, abundance and biomass, urban ecosystem


In the present time, a special attention is paid, worldwide, to the investigation of the biodiversity in ecosystems, as a important characteristic of the ecological investigations. The processes of urbanization of natural landscapes have caused some changes of biological factor of the soil formation and also of the formation of artificial ecological systems. The algae are an indispensable part of ecosystems, performing an important regulatory function in them. So aim of the research was to determine the systematic, environmental features, species composition of algae communities of soil in the city Mariupol (Donetsk region). Structural features of algae soil in habitats with various character of action of factors of urbanized environment are subjected to benchmark analysis. Results of use algal groups for monitoring soils of urbanized ecosystem are described. Problems of algae participation in maintenance of surface ecosystems stability under anthropogenic pressure on the environment have been discussed. Species composition and indication properties of soil algae as biological pollution indicators of the protected of the urbanized soils have been studied. The results of researches of various soil algal flora of arboreal plantations and lawns of the Mariupol industrial city are resulted. Conclusions about the influence of various kinds of anthropogenic effect upon of species diversity algae are given. Specific lines of algal groups of arboreal plantations and lawns of urban ecosystems are shown. The variety of the soil algae species has been investigated. Systematic structure at the level of orders, families, genera correlation of algae soil, life-forms are considered. The green and blue-green algae were found to be prevail, it was proved that they are the basis of dominate species complex. The greatest quantity of kinds of seaweed is allocated in zonal soils. The leading position in all investigated groups take representatives of Chlorophyta, except of the steppe phytocenoses, where the most various is the section of Cyanophyta. The increasing of species diversity of Xanthophyta is observed in the soils of background parts of man-planted forest phytocenoses. They are traditionally considered to be the index of purity of soil. Low species diversity of algoflora is a peculiarity of the city soils. Cyanophyta and Chlorophyta prevail, one-cell Xanthophyta are poor developed. A checklist of soil algal flora of the city of Mariupol is includes 78 species from five divisions: Chlorophyta – 32 (41,0 %), Cyanophyta – 25 (32,1 %), Xanthophyta – 9 (11,5 %), Bacillariophyta – 8 (10,3 %), Eustigmatophyta – 4 (5,1 %). Structural features of algae soil in habitats with various character of action of factors of urbanized environment are subjected to benchmark analysis. Including arboreal plantations 68 species: Chlorophyta – 27 (39,7 %), Cyanophyta – 20 (29,4 %), Xanthophyta – 12 (17,7 %), Bacillariophyta – 6 (8,8 %), Eustigmatophyta – 3 (4,4 %); in lawns 49 species – 23 (46,9 %), – 13 (26,5 %), – 4 (8,2 %), – 7 (14,3 %), – 2 (4,1 %) accordingly. On results researches of quantity of algal flora of urbanized soils the change of quantity is marked on the whole toward a decline. Abundance and biomass of soil algae of different in various ecosystems are given. Fluctuation ranges in biomass of algae of arboreal plantations and lawns have been registered. The species composition, ecological structure algae of arboreal plantations and lawns was analyzed. Ecological structure of algal communities of arboreal plantations and lawns: Ch16Р15С12X8H6B5M2CF2ampf2 (68) and Ch15P10В6С6Н5Х3М1NF1CF1amph1 (49) accordingly. Among the algae life forms Ch-, P-, X- and C-forms are domination (58 %).


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Shekhovtseva, O. (2014). Soil algae in urban ecosystems of the city of Mariupol. Fundamental and Applied Soil Science, 15(1-2), 63-69.