Colorado’s subalpine wetlands may be producing a toxic form of mercury – that’s a concern for downstream water supplies

By Eve-Lyn Hinckley, Associate Professor of Biogeochemistry, University of Colorado Boulder

The wetlands found across the Rocky Mountains of Colorado just below tree line are magical places. Dripping with mosses and deep green sedges, these open expanses flanked by evergreens are a breathtaking sight for passing hikers. Moose graze there, and elk gather during their mating season.

These subalpine wetlands are also crucial for regulating the supply of clean water from the highlands to metropolitan regions downslope, including Denver.

However,…

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