Open AccessEcological condition of the small north river after emergency release of oil products
Author(s) -
Е. М. Лаптева,
Olga Loskutova,
Yu. V. Kholopov
Publication year - 2019
Publication title -
vodnye resursy
Language(s) - English
Resource type - Journals
ISSN - 0321-0596
DOI - 10.31857/s0321-0596465523-532
Subject(s) - environmental science , contamination , spillage , environmental chemistry , dominance (genetics) , hydrocarbon , surface water , chemistry , environmental engineering , ecology , biology , organic chemistry , biochemistry , gene
The features of the chemical compositions of the surface water, bottom sediments, and zoobenthos communities of the small forest water way after an oil pipeline accident were investigated herein. Nine months after the oil spillage, an increased content of oil hydrocarbons (2.8 MAC) remained in the surface water downstream the place of the emergency release of oil-containing liquid. The detected high concentrations of iron ions (1.1–4.6 MAC) and copper (1.2–2.6 MAC) and the decomposition-resistant organic compounds (1.2–3.3 MAC) were typical for the background area, which certified their almost natural origin. The oil hydrocarbon content in the bottom sediments below the emergency release of oil in the water way exceeded the backgrounds one in 7–214 times. Zoobenthos is presented by 18 groups in the water ways of the region under consideration, out of which, 14 groups were detected in the contamination area. The modification of the zoobenthos structure and the reduction of its quantitative indicators of development were observed in the direction from the Vozeyshor creek. The dominance of entomostracans and oligochaete was detected in the bottom communities of the oil-contaminated areas.