Claus Beier, Risoe National Laboratory, Denmark

Wolfgang Cramer, PIK Potsdam, Germany

Christian K�rner, Basel University, Switzerland

Josep Penuelas, CREAF, Spain

Dieter Gerten,  PIK Potsdam, Germany

Lindsey Rustad, US Forest Service, NH, US

Michael Loik, University of California, CA, US

Yiqi Lou, University of Oklahoma, US

Rich Norby, Oak Ridge Laboratory, TE, US

Bill Parton, Colorado State University, CO, US