fens

MSI’s long-term commitment to restore rare, iconic wetlands on the San Juan National Forest

MSI’s long-term commitment to restore rare, iconic wetlands on the San Juan National Forest

MSI has dug in deep to restore high elevation wetlands.

The San Juan Mountains are home to very rare “iron fens,” a type of wetland that has been granted Protected Area status. These fens are very acidic (3 - 4.5 pH) from the weathering of iron pyrite, and host unique communities of Sphagnum mosses, relics of ecosystems following the last ice age. Fens require saturated perennial soils to store carbon as peat. Human activities over the past 100 years have drained and damaged these resources.