Auld G, Gulbrandsen LH, McDermott CL1 November 2008Journal article Journal:Annual Review of Environment and ResourcesVolume:33Issue:1, Annual Reviews, pp.187 - 211No abstract availableKeywords:30 Agricultural, Veterinary and Food Sciences , 3007 Forestry Sciences , 44 Human Society DOI10.1146/annurev.environ.33.013007.103754