Determining how the diversity of plant-eating megafauna has affected vegetation in the Arctic over the past 150,000 years will be the focus of a new University of Maine study funded by the National Science Foundation.  Alessandro Mereghetti, a UMaine Ph.D. student in ecology and environmental sciences, received a $56,118 Arctic Doctoral Dissertation Research Improvement Grant read more Mereghetti to study how megaherbivore diversity affects Arctic vegetation