[Experimental assessment of combined effect of nitrates and acute gamma-irradiation on green algae Scenedesmus quadricauda growth].
The combined effect of acute gamma-irradiation at doses of 0, 50, 100, 150 and 200 Gy and nitrates in concentrations of 0.04 g/dm3 (that corresponds to maximum permissible concentrations for fishery waters), 0.1, 0.25, 0.5, 1.0, 2.5 g/dm3 (that is close to NO3(-) level in water of a reservoir R-17 used as radioactive waste storage of the "Mayak" Production Association) and 5.0 g/dm3 (that is close to NO3(-) level in the water of radioactive waste storage reservoir R-9) on the unicellular green algae Scenedesmus quadricauda growth has been studied in laboratory conditions. It was shown that the joint effects of nitrates and y-radiation had an antagonistic character. Thus, it may be concluded that chemical pollution is the factor limiting the development of green algae in reservoir R-17; probably, both factors, chemical and radiating, are essential to the algocenosis degradation in reservoir R-9.
G A
GA
Triapitsyna
S P
SP
Tarasova
N I
NI
Atamaniuk
D I
DI
Osipov
E A
EA
Priakhin
D017753:Ecosystem; D004784:Environmental Monitoring / Q000379:methods*; D005720:Gamma Rays / Q000009:adverse effects*; D008954:Models, Biological; D009566:Nitrates / Q000009:adverse effects*; D011850:Radioactive Waste / Q000009:adverse effects*; D044444:Scenedesmus / Q000187:drug effects / Q000254:growth & development / Q000528:radiation effects; D012800:Siberia; D014873:Water Pollutants / Q000633:toxicity*; D014874:Water Pollutants, Chemical / Q000633:toxicity; D014875:Water Pollutants, Radioactive / Q000633:toxicity
D009566:Nitrates; D011850:Radioactive Waste; D014873:Water Pollutants; D014874:Water Pollutants, Chemical; D014875:Water Pollutants, Radioactive