Bioassessment 4

Session 58 (Contributed)
Thursday, June 8, 10:15 AM-12:00 PM, Egan 2
Moderator: J.J.H. Ciborowski

10:15 (382) Harnessing web technology for data visualization.
L.S. Fore¹ and J.S. Callahan². ¹Statistical Design, Seattle WA 98107, ²Mazama Science, Seattle WA 98107

10:30 (383) Developing reference benchmarks: A comparison of ecoregion, clustering - discriminant analysis, and nearest neighbour classifications.
M.F. Bowman^1,2, K.M. Somers^1,2, W. Keller³, C. Sarrazin-Delay³, and C. Brereton⁴. ¹Department of Zoology, University of Toronto, Toronto, Ontario, Canada M5S 3G5, ²Dorset Environmental Science Centre, Ontario Ministry of Environment, Dorset, Ontario, Canada P0A 1E0, ³Cooperative Freshwater Ecology Unit, Ontario Ministry of Environment, Sudbury, Ontario, Canada P3E 2C6, ⁴Environmental Health and Saftey, INCO Ltd., Copper Cliff, Ontario, Canada P0M 1N0

10:45 (384) MEDPACS, a Mediterranean Prediction And Classification System for benthic macroinvertebrate communities and its use to assess the ecological status according to the European Water Framework Directive.
J.M. Poquet¹, J. Alba-Tercedor¹, T. Puntí², M.M. Montoya-Sánchez³, S. Robles⁴, M. Álvarez⁵, C. Zamora-Muñoz¹, C.E. Sainz-Cantero¹, M.R. Vidal-Abarca³, M.L. Suárez³, M. Toro⁶, A.M. Pujante⁷, M. Rieradevall², and N. Prat². ¹Departamento de Biología Animal, Universidad de Granada, Granada, Spain, 18071, ²Departamento de Ecología, Universidad de Barcelona, Barcelona, Spain 08028 , ³Departamento de Ecología e Hidrología, Universidad de Murcia, Murcia, Spain 30100, ⁴Cimera Estudios Aplicados SL, Parque Científico de Madrid, Madrid, Spain, 28760, ⁵Área de Ecología, Universidad de Vigo, Vigo, Spain, 36200, ⁶División de Ecología de los Sistemas Acuáticos Continentales, CEDEX, Madrid, Spain, 28005, ⁷Red-Control SL, Parque Tecnológico de Valencia, Paterna, Spain, 46980

11:00 (385) Towards unified assessment of biological condition: Expert judgment and fuzzy set models.
J. Gerritsen¹, B.K. Jessup², and S.P. Davies³. ¹Tetra Tech Inc., Owings Mills, MD 21117, ²Tetra Tech, Inc., Montpelier, VT 05602, ³Maine Dept. of Environmental Protection, Augusta, ME 04333

11:15 (386) Random Forests improve the performance of RIVPACS-type models.
J.D. Ostermiller¹, C.P. Hawkins^2,3,4, and J. Van Sickle⁵. ¹Utah Division of Water Quality, Salt Lake City, UT, USA 84118-4870, ²Ecology Center, Utah State University, Logan, UT, USA 84322-5210, ³Western Center for Monitoring and Assessment of Freshwater Ecosystems, Utah State University, Logan, UT, USA 84322-5210, ⁴Department of Aquatic, Watershed and Earth Resources, Logan, UT, USA 84322-5210 , ⁵US Environmental Protection Agency, National Health and Environmental Effects Laboratory, Western Ecology Division, Corvallis, OR, USA 97333

11:30 (387) Using ecosystem function measures for stream health assessment.
M.R. Grace¹ and R.G. Young². ¹Water Studies Centre, School of Chemistry, Monash University, Melbourne, Victoria, Australia, 3800, ²Cawthron Institute, Nelson, New Zealand

11:45 (388) Establishing diatom reference communities for Québec streams (Canada) based on classification trees.
M. Grenier¹, S. Campeau², and A.N. Rousseau¹. ¹Department of Water Sciences, Institut national de la recherche scientifique, Québec, Québec, Canada, G1K 9A9 , ²Department of geography, Université du Québec à Trois-Rivières, Trois-Rivières, Québec, Canada, G9A 5H7