1. Department of Energy and Environment, Energy Technology; Chalmers University of Technology; Gothenburg Sweden
2. Department of Energy and Environment, Physical Resource Theory; Chalmers University of Technology; Gothenburg Sweden
3. New South Wales Department of Primary Industries/University of New England; New South Wales Australia
4. Department of Forest Ecology and Management; Swedish University of Agricultural Sciences; Umeå Sweden
5. Department of Forest Resource Management; Swedish University of Agricultural Sciences; Umeå Sweden
6. Department of Ecology; Swedish University of Agricultural Sciences; Uppsala Sweden