Author/Authors :
Kashulin، N A نويسنده Institute of the North Industrial Ecology Problems, Kola Science Centre, Russian Academy of Sciences 14a Fersman St., Apatity 184200, Russia , , Terentiev، P M نويسنده Institute of the North Industrial Ecology Problems, Kola Science Centre, Russian Academy of Sciences 14a Fersman St., Apatity 184200, Russia , , Koroleva، I M نويسنده Institute of the North Industrial Ecology Problems, Kola Science Centre, Russian Academy of Sciences 14a Fersman St., Apatity 184200, Russia ,
Abstract :
The current state of whitefish population and their organisms have been investigated
in subarctic Lake Chuna exposed to long-term air pollution from copper-nickel industry. Both annual
and long-term heavy metals and acid oxides loads on the lake have been determined. A qualitative
assessment has been made for water and bottom sediments. The investigation results have been
compared with those of the archived data (the 1950s -1960s studies) to reveal a number of changes.
The lifetime of whitefish has shortened, with early maturity and spawning. Pathological changes of
whitefish inner organs occur more frequently. Assessment was made for the Cu and Ni concentrations
in whitefish organs and tissues, the seasonal dynamics and peculiarities of metal accumulation in
two different species. The revealed changes of the biological constituent of the lake ecosystem
alongside with hydro-chemical indices of air-borne load is suggestive of adverse impact of longterm air-borne pollution on the Lake Chuna ecosystem.
