Episode Details

Researchers from the University of Nevada Reno discovered alarming mercury levels in wood duck feathers along the Carson River, up to sixty times the federal safety thresholds. This contamination, stemming from nineteenth-century gold mining, is exacerbated by flood events that remobilize the mercury and convert it into highly toxic methylmercury. Wood ducks, popular among hunters and year-round residents of the watershed, are ideal monitors due to their high mercury levels from aquatic foods. Despite these findings, Nevada lacks waterfowl consumption advisories, prompting calls for warnings to inform hunters. The Carson River Superfund site presents a complex management challenge, balancing flood benefits for wildlife against mercury release.

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