Numerous anthropogenic factors, historical and contemporary, have contributed to declines
in the abundance and diversity of freshwater fishes in North America. When Europeans first …

Arsenic occurs across the world in freshwater and marine environments, menacing the
survival of aquatic organisms. Organic and inorganic forms of this substance can be found …

Elevated concentrations of total arsenic (As) have been reported in boreal freshwater fish in
both human-impacted and relatively pristine areas. We assessed the arsenic speciation …

Vanadium, a potentially toxic metal, is enriched in the environment from anthropogenic
releases, particularly during fossil fuel production and use and steel manufacturing. Metal …

Precious metal mining activities have left complex environmental legacies in lakes around
the world, including some sites in climatically sensitive regions of the Canadian sub-Arctic …

Gold mining operations near Yellowknife (Northwest Territories, Canada) released vast
quantities of arsenic trioxide during the 1950s, which dispersed across the landscape …

Lake sediments store metal contaminants from historic pesticide and herbicide use and
mining operations. Historical regional smelter operations in the Puget Sound lowlands have …

Arsenic can accumulate in freshwater biota, sometimes reaching potentially harmful levels.
However, the toxicity of arsenic strongly depends on which arsenic species are present …

In the present study the concentrations of 12 trace elements (TEs): As, Cd, Co, Cr, Cu, Fe,
Hg, Mn, Ni, Pb, Se, and Zn were quantified in muscle and, where possible, liver tissues, of …

Lead (Pb) is a toxic element which is released as a result of anthropogenic activities, and Pb
stable isotope ratios provide a means to distinguish sources and transport pathways in …