Oil spills in fresh waters and state of ecosystem of lake pyasino before the catastrophic spill of 2020
M. I. Gladyshev1,2
a:2:{s:4:"TEXT";s:226:"1Institute of Biophysics of Siberian Branch of Federal Research Center “Krasnoyarsk Science Center of Russian Academy of Sciences”, Krasnoyarsk, Russia
2Siberian Federal University, Krasnoyarsk, Russia";s:4:"TYPE";s:4:"html";}
Keywords: petroleum pollution, plankton, benthos, ichthyofauna, water quality, Arctic lakes
Abstract
History of large oil (petroleum) spills in freshwaters is delineated, processes of physical-chemical and biological degradation of oil are regarded. Toxicity of oil for hydrobionts and effects of oil pollution on communities of plankton, benthos and ichthyofauna, as well as problems of removal of ecological consequences of oil spills are discussed. State of ecosystem of Lake Pyasino before the catastrophic spill of 2020, namely hydrochemical indicators, species composition, abundance and biomass of plankton, benthos and fish are described. Possible ways of recovery of ecosystem of Lake Pyasino are suggested, including a biomanipulation “bottom-up”.
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