Lichen Communities for Forest Health Monitoring in Colorado, USA A Report to the USDA Forest Service by Bruce McCune1, Paul Rogers2, Andrea Ruchty1, and Bruce Ryan3 29 June 1998 1Department of Botany and Plant Pathology, Cordley 2082, Oregon State University, Corvallis, OR 97331-2902. Phone: 541 737 1741, fax: 541 737 3573, email:
[email protected] 2USDA Forest Service, Intermountain Research Station, 507 25th St., Ogden, UT 84401 3Department of Botany, Arizona State University, Tempe, AZ 85287-1601 CONTENTS Abstract ............................................................................................................... 1 Introduction........................................................................................................... 2 Lichens in the Forest Health Monitoring Program ................................................ 2 The Lichen Community Indicator ..................................................................... 2 Previous Work on Lichen Communities in Colorado............................................. 4 Methods ............................................................................................................... 4 Field Methods .............................................................................................. 4 Data Sources ............................................................................................... 5 Data Analysis............................................................................................... 6 The Analytical Data Set.......................................................................