The following remarks were Paul Schullerys introduction to a roundtable discussion presented during the 5th Biennial Scientific Conference on the Greater Yellowstone Ecosystem, held 11–13 October 1999 in Yellowstone National Park. His remarks serve a second purpose in this issue of the WESTERN NORTH AMERICAN NATURALIST, as they set the stage for and introduce the remaining articles, all of which are papers, presentations, or addresses from that conference. The 1999 Yellowstone Biennial Conference was entitled "Exotic Organisms in Greater Yellowstone: Native Biodiversity Under Siege." Mr. Schullery is a resource naturalist with the National Park Service in Yellowstone.
"What is natural? Philosophical analysis and Yellowstone practice,"
Western North American Naturalist: Vol. 61
, Article 1.
Available at: http://scholarsarchive.byu.edu/wnan/vol61/iss3/1