title: [Phytoplankton and zooplankton of the industrial reservoir R-9 (Lake Karachay)].
abstract: Planktonic communities of the Reservoir-9 (Lake Karachay, storage reservoir of liquid medium-level radioactive waste of the Mayak Production Association) are exposed to the severe radioactive forcing (in 2010 the total beta-activity of the water was 1.8 x 10(7) Bq/L, total alpha-activity was 1.1 x 10(4) Bq/L), aswell as to the chemical contamination (level of nitrates in water 4.1 g/L). The calculated values of the absorbed dose rate were 130 Gy/day for phytoplankton and 4.0 Gy/day for zooplankton. Extremely low species diversity, the overwhelming dominance of one species (phytoplankton is close to a monoculture of ubiquitous cyanobacteria Geitlerinema amphibium, zooplankton--to a monoculture of rotifers Hexarthrafennica), wide fluctuations in numbers of algae, a low number of zooplankton were the most substantial characteristics of the plankton communities in Lake Karachay. So, plankton communities status is a sign of environmental retrogress in this ecosystem.
authors.forename: E A
authors.initials: EA
authors.lastname: Priakhin
authors.forename: G A
authors.initials: GA
authors.lastname: Triapitsina
authors.forename: N I
authors.initials: NI
authors.lastname: Atamaniuk
authors.forename: D I
authors.initials: DI
authors.lastname: Osipov
authors.forename: P M
authors.initials: PM
authors.lastname: Stukalov
authors.forename: I A
authors.initials: IA
authors.lastname: Ivanov
authors.forename: I Ia
authors.initials: IIa
authors.lastname: Popova
authors.forename: A V
authors.initials: AV
authors.lastname: Akleev
mesh_terms: D000512:Alpha Particles; D000818:Animals; D001610:Beta Particles; D053476:Extinction, Biological; D060106:Lakes; D010839:Phytoplankton / Q000254:growth & development / Q000528:radiation effects; D011850:Radioactive Waste / Q000009:adverse effects; D011868:Radioisotopes / Q000737:chemistry; D012426:Russia; D014867:Water / Q000737:chemistry; D014878:Water Pollution, Radioactive; D015048:Zooplankton / Q000254:growth & development / Q000528:radiation effects
chemical_list: D011850:Radioactive Waste; D011868:Radioisotopes; D014867:Water