Shifts in trait means and variances in North American tree assemblages: species richness patterns are loosely related to the functional space

Irena Simova, Cyrille Violle, Nathan J. B. Kraft, David Storch, Jens-Christian Svenning, Brad Boyle, John C., II Donoghue, Peter Jørgensen, Brian J. McGill, Naia Morueta-Holme, William H. Piel, Robert K. Peet, Jim Regetz, Mark Schildhauer, Nick Spencer, Barbara Thiers, Susan Wiser, Brian J. Enquist