Author Affiliations +
Keith A. Hobson,1 Brett Sandercock,2 Susan Haig,3 Carol Vleck,4 Reed Bowman5
1Environment Canada, Saskatoon, Saskatchewan, Canada
2Norwegian Institute for Nature, Trondheim, Norway
3Oregon State University, Corvallis, Oregon, USA
4Iowa State University, Ames, Iowa, USA
5Archbold Biological Station, Venus, Florida, USA