1. School of Renewable Natural ResourcesLouisiana State UniversityBaton RougeLAUSA
2. Department of Geography, Institute of Arctic and Alpine ResearchUniversity of ColoradoBoulderCOUSA
3. School of Environment and Sustainability and Global Institute for Water SecurityUniversity of SaskatchewanSaskatoonSKCanada
4. School of GeosciencesUniversity of AberdeenAberdeenUK
5. National Health and Environmental Effects Research Laboratory, Western Ecology DivisionUS Environmental Protection AgencyCorvallisORUSA