R. Howard Skinner¹, Binh T Nguyen², Roger T. Koide³, Patrick J. Drohan², Curtis J. Dell⁴, Paul R. Adler⁵ and Andrea N Nord⁶, (1)Bldg. 3702, USDA-ARS, University Park, PA, (2)Ecosystem Science and Management, Pennsylvania State University, University Park, PA, (3)Department of Biology, Brigham Young University, Provo, UT, (4)USDA-ARS Pasture Systems & Watershed Mgmt Research Unit, State College, PA, US, (5)Pasture Systems & Watershed Mgmt Research Unit, USDA-ARS Pasture Systems & Watershed Mgmt Research Unit, University Park, PA, US, (6)Plant Science, Pennsylvania State University, University Park, PA