TY JOUR TI Migration of heavy metals in water ecosystems (using the example of the Belaya River in the North-Western Caucasus) KW Organic substances KW heavy metals KW water bodies KW ecosystem KW bottom sediments KW transformation KW adsorption capacity KW hydrochemical factors JO Russian Journal of Earth Sciences AU Toroyan, R.A. AU Bedanokov, M.K. AU Takh, I.P. PY 2022 IS 22 PB Geophysical Center of the Russian Academy of Sciences