This study examined nutrient, water and carbon cycling processes and biodiversity patterns within replicated sub-watersheds that comprised different configurations of annual and perennial plant communities, ranging from conventional row crops to mixed annual and perennial systems to reconstructed native plant communities.
How much perennial plant cover is needed to achieve significant improvements in water quality?
Results suggest that placing as little as 10 percent perennial cover in the lower (toe) portion of a watershed can substantially reduce sediment loss by greater than 90 percent.
Year of Grant Completion
Helmers, Matthew J., "Integration of water, nutrient an carbon cycling under diverse annual perennial plant community systems in agricultural landscapes" (2015). Leopold Center Completed Grant Reports. 512.