1. Department of Biological Sciences, University of Alberta, CW 405 Biological Sciences Building, Edmonton, AB T6G 2E9, Canada.
2. Department of Agricultural, Food and Nutritional Science, University of Alberta, 410 Ag/For Center, Edmonton, AB T6G 2P5, Canada.
3. Alberta Biodiversity Monitoring Institute, CW 405 Biological Sciences Building, Edmonton, AB T6G 2E9, Canada.
4. Rangeland Resource Management, Alberta Environment and Parks, Box 1420, Pincher Creek, AB T0K 1W0, Canada.
5. Biodiversity and Ecosystem Health Sciences, Environmental Monitoring and Science Division, Alberta Environment and Parks, 9888 Jasper Avenue, Edmonton, AB T5J 5C6, Canada.
6. Ruminant Nutrition and Microbiology, Agriculture and Agri-Food Canada, 5403 — 1st Avenue South, P.O. Box 3000, Lethbridge, AB T1J 4B1, Canada.
7. Environmental Planning and Economics Program, InnoTech Alberta, 250 Karl Clark Road, Edmonton, AB T6N 1E4, Canada.