Grassland Species Loss Resulting From Reduced Niche Dimension [1]

A new study of grasslands conducted at the University of California, Santa Barbara's Sedgwick Reserve in the Santa Ynez Valley sheds light on how humans are contributing to a decrease in biodiversity...
Letter
W. Stanley Harpole and David Tilman
Nature 446, 7137 (2007) 
Abstract [2]
Press Release [3]