Specific character of soil “blooming” in agricultural and urbanized territories
L. V. Kondakova, L. I. Domracheva, I. A. Kondakova
Section: Population ecology
Specious content and quantity characteristics of microorganiams which lead to soil “blooming” in natural, anthro
-
pogenic, and urbanized ecosystems are shown in the article. In natural ecosystems algae and cyanobacteria communities
develop in gradual succession stages, from unicellular green algae and Xanthophyta, filamentous green algae and non-
heterocyst cyanobacteria to heterocyst cyanobacteria. Agricultural soil “blooming” has some peculiarities, irrespective
of the place, season, soil type, dominating groupings. Among the “blooming” dominants cyanobacteria and green algae
of the geni
Cylindrospermum, Nostoc, Anabaena, Klebsormidium
etc prevail. In agro-coenoses there is a direct connection
between doses and terms of fertilizer treatment and the stage of development of the surface growth. Urban soils suffer
from more intensive and diverse impact, as compared with agricultural and natural ecosystems soils. The specious content
of phototrphs shows that in late summer surface biofilms represent many-species communities with different species of
cyanobacteria and diatoms dominating. Cell density in “blooming” films is very high, it varies from 18 to 47 million cells
per cm
2
. Various city pollutants provide diversity of phototrophic groups.
Keywords: Specific character of soil “blooming” in agricultural and urbanized territories
Article published in number 3 for 2018 DOI: 10.25750/1995-4301-2018-3-078-085
ISSN 1995-4301
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