Fish fauna of reservoirs of the European northeast in the areas of production and transportation of petroleum hydrocarbons
The most severe accident at oil pipe lines in Russia was assessed for biological consequences. Thousands tons of oil polluted the Kolva River and then the Usa River and the Pechora River. Pollution of water areas strongly changed fish population structure. Fish species being sensitive to water pollution as peled, nelma, cisco, broad whitefish, freshwater sculpin, and dogfish disappeared. Roach and perch constituted the majority of catches. Commercially valuable fish species dramatically decreased their ratio in fish population structure. For 15 years, population of cisco decreased by tens of times. Perennial fish population degradation trends were observed for numerous water reservoirs at areas of production and transport of oil hydrocarbons.