Bioassessment 1

Session 32 (Contributed)
Wednesday, June 9, 8:00 AM-9:45 AM, Hebb
Moderator: S. Canton

8:00 (210) Biological impairment and the eye of the beholder (I): effects of data standardization, similarity measure, and classification method on RIVPACS-type model precision.
Y. Cao and C.P. Hawkins. Department of Aquatic, Watershed, and Earth Resources / Ecology Center, Utah State University, Logan, UT, USA 84322-5210

8:15 (211) Biological impairment and the eye of the beholder (II): effects of data standardization, similarity measure, and classification method on RIVPACS-type model accuracy.
C.P. Hawkins and Y. Cao. Department of Aquatic, Watershed, and Earth Resources / Ecology Center, Utah State University, Logan, UT, USA 84322-5210

8:30 (212) A predictive model for assessing the biological condition of Appalachian streams.
D.M. Carlisle¹ and C.P. Hawkins². ¹US Geological Survey, National Water Quality Assessment Program (NAWQA), 413 National Center, 12201 Sunrise Valley Drive, Reston, VA 20192, ²Department of Aquatic, Watershed, and Earth Resources, Utah State University, Logan, UT 84322-5210

8:45 (213) Uncertainty and bias in RIVPACS-type estimates of freshwater biological condition.
R.T. Clarke. Centre for Ecology and Hydrology (CEH), Winfrith Technology Centre, Dorset, DT2 8ZD, UK

9:00 (214) New Mexico biological assessment: development of indices for ecological regions.
G. Jacobi¹, M. Jacobi¹, S. Stringer², S. Joseph², E. Leppo³, and M. Barber³. ¹Jacobi & Associates, ²NM Environment Department, ³Tetra Tech

9:00 (215) Combining stressor-specific tolerance values and predictive models for diagnosing the causes of stream impairment.
L.L. Yuan¹ and C.P. Hawkins². ¹National Center for Environmental Assessment, U.S. Environmental Protection Agency, Washington, DC 20460, ²Department of Aquatic, Watershed, and Earth Resources, Utah State University, Logan, UT 84322

9:15 (216) Bioassessment methods minefield: choosing a method.
R.H. Norris¹, P. Liston¹, S. Linke¹, J. Mugodo¹, L. Metzeling², P. Newall³, S. Nichols¹, and G. Wilson⁴. ¹Cooperative Research Centre for Freshwater Ecology, University of Canberra, Canberra 2601, AUSTRALIA., ²Freshwater Sciences, EPA Victoria, Ernest Jones Drive, Macleod, Victoria 3085, AUSTRALIA., ³Cooperative Research Centre for Freshwater Ecology, Environmental Audit, Environment Protection Authority, GPO Box 4395QQ Melbourne 3001 AUSTRALIA, ⁴CRC for Freshwater Ecology, MDFRC Northern Laboratory, 24-26 McLean St (Locked Bag 4), Goondiwindi, Queensland 4390, AUSTRALIA.