The widely accepted conceptual model of mercury (Hg) cycling in freshwater lakes
(atmospheric deposition and runoff of inorganic Hg, methylation in bottom sediments and …

BACKGROUND: Because of concern about the recently increasing levels of biological Hg in
some areas of the Arctic, we examined the literature concerning the long-term changes of …

Atmospheric deposition of mercury onto sea ice and circumpolar sea water provides
mercury for microbial methylation, and contributes to the bioaccumulation of the potent …

Mercury in the Arctic is an important environmental and human health issue. The reliance of
Northern Peoples on traditional foods, such as marine mammals, for subsistence means that …

There has been increasing concern about mercury (Hg) levels in marine and freshwater
organisms in the Arctic, due to the importance of traditional country foods such as fish and …

Recent and historical deposition of mercury (Hg) was examined over a broad geographic
area from southwestern Northwest Territories to Labrador and from the US Northeast to …

Environmental context. Mercury (Hg) occurs at high concentrations in Arctic marine wildlife,
posing a possible health risk to northern peoples who use these animals for food. We find …

Atmospheric deposition of metals originating from a variety of sources, including bitumen
upgrading facilities and blowing dusts from landscape disturbances, is of concern in the …

Environmental context Mercury, in its methylated form, is a neurotoxin that biomagnifies in
marine and terrestrial foodwebs leading to elevated levels in fish and fish-eating mammals …

An unknown fraction of mercury that is deposited onto the cryosphere is emitted back to the
atmosphere. Since mercury that enters the meltwater may be converted to highly toxic …