Pretreatment site with invasion of woody plants—Scotch pine, prickly ash, autumn olive (July 2011)
The Rieth Fen is a <1-acre area within a larger remnant marl-beach/wet prairie that surface drains calcium-rich water into adjacent Bear Lake. Work was initiated November 2012 with the removal of invading tree cover and high-mowing the abundant decadent shrubby cinquefoil (Potentilla fruticosa). This stimulated its growth and provided more sunlight to encourage a robust herbaceous ground cover of endemic species. Prescribed fire is expected to be introduced in 2013 to encourage and maintain this growth and diversity.