Kenneth M. Portier Associate Professor Institute of Food and Agricultural Sciences Statistical Consulting Unit 522 McCarty Hall C P. O. Box 110339 University of Florida Gainesville, FL 32611-0339 Phone: (352) 392-3067 FAX: (352) 392-8555 E-mail: portier@ufl.edu

Last updated 8/96.

• Education
• Experience
• Research Interest
• Activities
• Publications

Education

• B. S. Nicholls State University, Thibodaux, Louisiana 1973 -Mathematics.
• M. S. University of North Carolina at Chapel Hill 1976 -Statistics.
• Ph.D. University of North Carolina at Chapel Hill 1979 -Biostatistics.

Experience

• Administrative Positions
  1. Acting Assistant Vice President, Coordinator of Telecommunications and Computing, Office of Academic Affairs, University of Florida, 5/89-9/91
• Academic Positions
  1. Environmental Biometry Branch, National Institute of Environmental Health Sciences - NIH, Research Triangle Park, NC, Statistician/Student Intern, 1976
  2. Institute of Environmental Studies, University of North Carolina at Chapel Hill - Student Assistant, 6/77-12/78
  3. Institute of Food and Agricultural Sciences, University of Florida, Assistant Research Scientist and Statistical Consultant, 2/79-12/81
  4. Institute of Food and Agricultural Sciences, University of Florida, Assistant Professor of Statistics and Statistical Consultant, 2/81-8/86
  5. Institute of Food and Agricultural Sciences, University of Florida, Associate Professor of Statistics and Statistical Consultant, 12/86-Present
  6. Institute of Food and Agricultural Sciences, University of Florida, Associate Professor (Affiliate) of Wildlife and Range, 12/86-Present
  7. Laboratorium Statistiek & Proeftechniek, Katholieke Universiteit Leuven, Leuven, Belgium, Visiting Researcher (Sabbatical Leave), 9/92-12/92Dissertations and Theses

Research Interest

I am primarily a statistical consultant within the Agricultural Experimental Station, with strong interest in research relating to environmental and ecological issues. I pursue specific research objectives in the following areas.

• The role of technology (hypermedia documents and simulations) in statistical instruction.
• Experimental design and its application in agricultural and environmental research.
• Natural resource sampling and population estimation.
• Computer intensive statistical methods.
• Expert systems in statistics.

Activities

• Current Contracts and Grants
  • Linking Instructions, Hypermedia and Practice in Natural Resource Sampling, USDA-CSRS Higher Education Challenge Grant Program, 9/94-9/96.
  • Predicting and Managing Vibro Vulnificus Risk in the Gulf of Mexico, EPA Gulf of Mexico Program, 6/95-6/96
  • Statistical Analysis of Florida Per Capita Fish and Seafood Consumption Data, Florida Department of Environmental Protection, 6/95-12/95.
• Student Committees
  • Membership on Doctoral Committees: 10
  • Membership on Masters Committees: 14
  • Committee Chair: 1

Publications

1. Books, Co-Authored
   • Henry, J.A., K. M. Portier, and J. M. Coyne. 1994. The Climate and Weather of Florida, Pineapple Press Inc., Sarasota, FL.
2. Books, Contributor of Chapters
   1. Hetrick, V.R., and K.M. Portier. CSIMS - Comprehensive Scientific Information Management System: A Tool for Managing Information in Biomass Programs. Second European Conference on Biomass Research, A. Strub, P. Chartier, and G. Schleser, (eds.), Applied Science Publishers, New York, pp 666-770.
   2. Shrilapour, A., P.H. Smith, and K.M. Poriter. 1986. Prediction of Methane Yield from Biomass. In: Biomass Energy Development, W. H. Smith (ed.), Plenum Publishing Corp.
   3. Portier, K.M., and J.E. Cinereski. Information Management. In: Methane from Biomass: A Systems Approach, edited by W.H. Smith and J.R. Frank, Elsevier Science Publishing Co. Inc., New York, pp 15-20.
3. Monographs
   1. Portier, K.M., A.D. Bottcher, W. Kunkel, and T.R. Hintz. Software Development, Documentation and Review Guidelines. Florida Cooperative Extension Circular 605, University of Florida, Gainesville, FL.
   2. Shell, T., R. Beilock, K. M. Portier. 1990. Distribution of Florida's Produce Throughout the United States and Canada. Food and Resources Economics, Economic Report 119, January, 59 pages.
   3. Beilock, R., K.M. Portier, T. Shell, R. Mack, K. Casavant, and J. Dunn. 'Movements of Fresh Fruits and Vegetables in the United States. Regional Bulletin for S-182 Transportation of Southern Perishable,120 pages.
   4. Hall, P.M., and K.M. Portier. 1994. Cranial Morphometry of New Guinea Crocodiles (Crocodylus Novaeguineae): Ontogenetic Variation in Relative Growth of the Skull and an Assesment of its Utility as a Predictor of the Sex and Size of Individuals. Herpetological Monographs, 8, 203-225. Florida Agricultural Experiment Station Journal Series R-01309.
4. Refereed Publications
   1. Reddy, K. R., K. L. Campbell, D. A. Graetz, amd K. M. Portier. 1980. 1980 Agricultural Drainage, Water Treatment Systems, Paper #80-2531, American Society of Agricultural Engineers.
   2. Portier, K.M., and K.C. Ewel. 1981. Confidence Bands for a Two Compartment, Non-Linear Decomposition Model. Ecological Modelling, Vol 14, pp 125-132.
   3. Rao, P.V., K.M. Portier, and P.S.C. Rao. 1981. A Stochastic Approach for Describing Convective-Dispersive Solute Transport in Saturated Porous Media. Water Resources Research Vol. 17, no. 4, pp 963-968.
   4. Rao, P.V., K.M. Portier, and J.A. Ondrasik. 1981. Density Estimation Using Line Transect Sampling. Studies in Avian Biology, No. 6, The Cooper Ornithological Society, pp 441-445.
   5. Kossuth, S.V., R. H. Biggs, P. G. Webb, and K. M. Portier. 1981. Rapid Propagation Techniques for Fruit Crops. Proceedings of the Florida State Horticultural Society, Vol. 94, pp 323-328.
   6. Clark, L.C., C. M. Shy, K. M. Portier, B. M. Most, and J. W. Florin. 1982. Cancer Mortality and Agricultural Activity: An Association with Cotton Production and Large Farms, in: Environmental Epidemiology, P. E. Leverton (ed.), Preager Scientific, New York, pp 3-16.
   7. Reddy, K.R., K. L. Campbell, D. A. Graetz, and K. M. Portier. 1982. Use of Biological Filters for Treating Agricultural Drainage Effluents. Journal of Environmental Quality, Vol. 11, no. 4, pp 591-595.
   8. Portier, K.M., and S.F. Shih. 1982. Spline Fitting in Land Forming Design. Soil and Crop Science Society of Florida Proceedings, Vol. 41, pp 39-43.
   9. Reddy, K.R., D. A. Graetz, K. L. Campbell, and K. M. Portier. 1983. Effect of Aquatic Macrophytes on Physical-Chemical Properties of Agricultural Drainage Water. Journal of Aquatic Plant Management, Vol. 21, pp 1-7.
   10. Sutton, D.L., and K.M. Portier. 1983. Variation of Nitrogen, Phosphorus and Potassium Contents of Hydrilla in South Florida. Journal of Aquatic Plant Management, Vol. 21, pp 87-92.
   11. Methany, E.L., R.L. Kepner, and K.M. Portier. 1983. Landing Distribution and Density of Sound-Attracted Mole Crickets. Annals of the Entomological Society of America, Vol. 76, No. 2, pp 278-281.
   12. Thurmnod, M.C., K.M. Portier, D.M. Puhr, and M.J. Burrage. 1983. A Prospective Investigation of Bovine Leukemia Virus Infection in Young Dairy Cattle Using Survival Methods. American Journal of Epidemiology, Vol. 117, No. 5, pp 621-631.
   13. McCoy, R.E., D.S. Williams, and K.M. Portier. 1983. Evaluation of Spray Mixture for Lethal Yellowing Control. Proceedings of the Florida State Horticultural Society, Vol. 95, pp 258-259.
   14. Reinart, J.A., and K.M. Portier. 1983. Distribution and Characterization of Organophosphate - Resistant Southern Chinch Bugs(Heteroptera: Lygaeidae) in Florida. Journal of Economic Entomology, Vol. 76, No. 5, pp 1187-1190.
   15. Lynne, G.E., W.G. Boggess, and K.M. Portier. 1984. Irrigation Water Supply as a Bioeconomic Process. Southern Journal of Agricultural Economics, pp 73-82.
   16. Webb, R.S., R.L. Anderson, and K.M. Portier. 1984. Comparative seedling resistance of Pinus elliottii var. elliotti and P. elliotti var. densa to Cornartium quercum f. sp. fusiforme. Plant Disease, Vol. 66, pp 145-148.
   17. Myhre, D.L., L. Vasquez, K.M. Portier, J.R. Gardner, and R.S. Mansell. 1985. Penetrometer Resistance for Soil in a Florida Grove Affected with Citrus Blight. Proceedings of the International Society of Citriculture, Vol 1, pp 134-140.
   18. Rao, P.V., and K.M. Portier. 1985. A Model for Transect Sampling of Clustered Populations. Statistics and Probability Letters, Vol. 3, pp 89-93.
   19. Sutton, D.L., and K.M. Portier. 1985. Density of Tubers and Turions of Hydrilla in South Florida. Journal of Aquatic Plant Management, Vol. 23.
   20. Webb, R.S., R.M. Reich, L.G. Arvanitis, K.M. Portier, H.D. Patterson, and T. Davoli. 1985. Spatial Patterns of Incidence of Cronartium quercuum f. sp. fusiforme in Young Plantations of Pinus elliottii var. elliottii. Applied Agricultural Research, Vol. 1.
   21. Biggs, R.H., P.G. Webb, and K.M. Portier. 1986. Enhanced Ultraviolet-B Radiation, Wheat Yield and Disease Incidence and Severity Under Field Conditions. Physiological Planetarum.
   22. Schram Jr., H.L., P.J. Haydt, and K.M. Portier. 1987. Evaluation of Pre-Release, Post-Release, and Total Mortality of Tournament-Caught Large Mouth Bass in Two Florida Lakes. 1986 North American Journal of Fisheries Management, Vol. 7, pp 395-402.
   23. Reddy, K.R., and K.M. Portier. 1987. Nitrogen Utilization by Typha Latifolia L. as Affected by Temperature and Rate of Nitrogen Application. Aquatic Botany Vol. 27, pp 127-138.
   24. Hart, R., P.G. Webb, R.H. Biggs, and K.M. Portier. 1988. Use of Lichen Fumigation Studies to Evaluate the Effects of New Emission Sources on Class 1 Areas. International Journal of Air Pollution Control and Waste Management, Vol. 38, pp 144-147.
   25. Mortimer, J.A., and K.M. Portier. 1989. Reproductive Homing and Internesting Behavior of the Green Turtle (Chelonia mydas) at Ascension Island, South Atlantic Ocean. COPEIA, Vol. 4, pp. 962-977.
   26. Beilock, R., and K.M. Portier. 1989. Using USDA Fresh Fruit and Vegetable Arrivals to Determine the Distribution of a State's Production. Northeast Journal of Agricultural and Resource Economics, Vol 18(1), April, pp 35-45.
   27. Sutton, D.L., and K.M. Portier. 1989. Influence of Allelochemicals and Aqueous Plant Extracts on Growth of Duckweed. Journal of Aquatic Plant Management, Vol. 27, pp 90-95.
   28. Brown, W.F., J.E. Moore, J.E. Moore, W.E. Kunkle, C.G. Chambliss, and K.M. Portier. 1990. Forage Testing Using Near Infrared Reflectance Spectroscopy. Animal Science, Vol. 68, pp 1416-1427.
   29. Sutton, D.L., and K.M. Portier. 1990. Influence of Spikerush Plants on Growth and Nutrient Content of Hydrilla. Journal of Aquatic Plant Management, Vol. 29, pp 6-11
   30. Aiken, G.E., W.D. Pitman, C.G. Chambliss, and K.M. Portier. 1991. Plant Responses to Stocking Rate in a Subtropical Grass-Legume Pasture. Agronomy Journal, Vol. 83, pp 124-129.
   31. Aiken, G.E., W.D. Pitman, C.G. Chambliss, and K.M. Portier. 1991. Responses of Yearling Steers to Stocking Rate in a Subtropical Grass-Legume Pasture. Journal of Animal Science, Vol. 69, pp 3348-3356.
   32. Jennings, M.L., D.N. David, and K.M. Portier. 1991. Effect of Marking Techniques on Growth and Survivorship of Hatchling Alligators. Wildlife Society Bulletin, Vol. 19, pp 204-207.
   33. Sutton, D.L., T.K. Van, and K.M. Portier. 1992. Growth of dioecious and monoecious hydrilla from single tubers. Journal of Aquatic Plant Management, Vol. 30 pp 15-20.
   34. Littell, R.C., and K.M. Portier. 1992. Robust Parametric Confidence Bands for Distribution Functions. Journal of Statistical Computing and Simulation, Vol 41, pp 187-200.
   35. Pitman, W.D., K.M. Portier, C.G. Chambliss, and A.E. Kretschmer, Jr. 1992. Performance of yearling steers grazing bahia grass pastures with summer annual legumes or nitrogen fertilizer in subtropical Florida. Tropical Grasslands, September, 1992.
   36. Schrevens, E., K. Neyens, J. Verreydt, K.M. Portier, and J. De Baerdemaeker. 1994. Color and firmness changes of tomatoes. Proceedings of the COST94 workshop, Leuven, Belgium, Sept. 1993.
   37. Schrevens, E., K. Neyens, J. Verreydt, K.M. Portier, and J. De Baerdemaeker. 1994. Quality evolution of fruits by means of multivariate analysis of non-destructive parameters. International Symposium on 'Quality of fruits and vegetables, Influence of Pre- and Post-harvest Factors and Technologies. Acta Horticulturae, Chania, Greece, September 1993.
   38. Schrevens, E., K. Neyens, J. Verreydt, K.M. Portier, and J. De Baerdemaeker. 1994. Evaluation of different segmentation methods for the description of color and color evolution of tomatoes. International Symposium on 'Postharvest Physiology, Pathology and Technologies for Horticultural Commodities,' Acta Horticulturae, Agadir, Morroco, January 1994.
   39. Streever, W.J., and K.M. Portier. 1995. A Computer Program to Assist with Sampling Design in the Comparison of Natural and Constructed Wetlands. Wetlands, Vol 14, no. 3, September 1994, pp199-205.
   40. Chen, I-C., F.A. Chapman, C-I. Wei, K.M. Portier, and S.F. O'Keefe. 1995. Differentiation of Cultural and Wild Sturgeon {Acipenser oxyrinchus destoi} Based on Fatty Acid Composition. Journal of Food Science, Vol. 60, No. 3.
   41. Sutton, D.L., and K.M. Portier. 1995. Growth of Dioecious Hydrilla in Sedements from Six Florida Lakes. Journal of Aquatic Plant Management, Vol. 33, pp 3-7.
   42. Nair, V.D., D.A. Graetz, and K.M. Portier. 1995. Forms of Phosphorus in Soil Profiles from Dairies of South Florida. Soil Science Society of America Journal, Vol 59, No. 5, pp1244-1249.
   43. Anderson, D.L., H.G. deBoer, and K.M. Portier. 1995. Identification of Nutritional and Environmental Factors Affecting Sugarcane Production in Barbados. Communications in Soil Science Plant Analysis, Vol 26 (17&18), pp2887-2901.
   44. Korndorfer, G.H., D.L. Anderson, K.M. Portier, and E.A. Hanlon. 1995. Phosphorus Soil Test Correlation to Sugarcane Grown on Histosols in the Everglades. Soil Science Society of America Journal, Vol 59, pp1655-1661.
   45. Seaman, Jr., W., W.J. Lindberg, T.K. Frazer, and K.M. Portier. 1995. Fish Abundance and Diversity in Response to Variable Dispersion of Artificial Reef Units. Proceedings of the International Conference on Ecological System Enhancement Technology for Aquatic Environments, Tokyo, Japan, 6pp (in press).
   46. Portier, K.M., and D.L. Anderson. 1996. Using Tree Regression to Identify Nutritional and Environmental Factors Affecting Sugarcane Production. Proceedings of the Seventh Kansas State University Conference on Applied Statistics in Agriculture, 182-195.
   47. Branch, L.C., D. Villarreal, J.L. Hierro, and K.M. Portier. 1996. Effects of local extinction of the plains viscacha (Logostomces msximum) on vegetation patterns in semi-arid scrub. Oecologia, (In Press).
5. Non-Refereed Publications
   1. Clark, L.C., and K.M. Portier. 1979. Diethystilbestrol and the Risk of Cancer. New England Journal of Medicine, Vol. 300, no. 5, pp 263-264.
   2. Rao, P.V., and K.M. Portier. 1981. Line Transect Sampling of Clustered Populations. Proceedings of the American Statistical Association Section on Survey Research Methods.
   3. Portier, K.M., and V.R. Hetrick. 1982. CSIMS - Comprehensive Scientific Information Management System. Proceedings of COMSTAT 1982, International Association of Statistical Computing, Physica-Verlag, Vienna.
   4. Portier, K.M., and P.Y. Lai. 1983. A Statistical Expert System for Analysis Determination. Proceedings of the American Statistical Association Section on Statistical Computing, pp 309-311.
   5. Portier, K.M., and P.Y. Lai. 1985. Estimating Autocorrelations and Cross-Correlations Where Missing Values are Present: A SAS Macro. SAS Users Group International Conference Proceedings, pp 50-54.
   6. Hetrick, V.R., and K.M. Portier. 1985. Using SAS Software to Generate Unsupervised LANDSAT Classifications. SAS Users Group International Conference Proceedings, pp 825-830.
   7. Borum, P.R., J.J. Chapman, K.M. Portier, M.J. Macey, and M. Keegan. 1986. Carnitine Concentration of Breast Milk During the First 16 Weeks of Lactation. Federation Proceedings, Vol. 45, p 364.
   8. Portier, K.M., D.R. Dippon, and V.R. Hetrick. 1988. An Implementation of Projection Pursuit for Classification. Proceedings of the Statistical Computing Section of the American Statistical Association.
   9. Bishop, M.A., K.M. Portier, and M.W. Collopy. 1988. Sampling Methods For Aerial Transect Sampling of Nesting Florida Sandhill Cranes in Central Florida. J. Harris, ed., Proceedings of the 1987 International Crane Symposium, International Crane Foundation, Baraboo, WI.
   10. Vasguez, L., D.L. Myhre, R.N. Gallager, E.A. Hanson, and K.M. Portier. 1988. Soil Compaction associated with tillage treatments for soybean. Soil and Tillage Research 13/1, Elsevier Science Publishers B.V., Amsterdam.
   11. Brown, W.F., J.E. Moore, W.E. Kunkle, C.G. Chambliss, and K.M. Portier. 1991. Extension Forage Testing Using Near Infrared Reflectance Spectroscopy. Florida Beef Cattle Research Report, pp 29-40.
   12. Vervaeke, F., E. Schrevens, J. Verreydt, K.M. Portier, and J. De Baerdemaeker. 1994. The use of digitized video images for monitoring color and color evolution of Jonagold apples during shelf life. Proceedings of the sixth international congress on engineering and food, Chiba, Japan, May 1993.
   13. Korndorfer, G.H., D.L. Anderson, K.M. Portier, and E.A. Hanlon. 1995. Phosphorus Soil Test Correlation and Calibration to Sugarcane Yield on Histosols of the Everglades. XXV Congresso Brasileiro de Ciencia do Colo, July, 1995, pp972-974.
   14. Hallmark, W.B., K.M. Portier, and A.J. Judice. 1996. Relationship between soil nutrient analysis and whole farm sugarcane yields. American Society of Sugarcane Technologists Journal, 15, 1996, p65.
6. Reviews
   1. Yates, Frank. 1982. Sampling Methods for Censuses and Surveys (4th ed.). Technometrics, Vol. 24, No. 3, pp 254-255.
7. Miscellaneous
   1. deWaal, D.J., L. Weidman, K.M. Portier, and H. Majumder. 1975. Asymptotic Distributions for Hotelling's T20 and Pillai's Statistic for Testing Independence - A Different Approach. Institute of Statistics Mimeo Series #1001, Department of Statistics, University of North Carolina at Chapel Hill.
   2. Portier, K.M. 1979. Some Multistage Models of Association Between Two Causes of Death. Institute of Statistics Mimeo Series #1192, Department of Statistics, University of North Carolina at Chapel Hill.
   3. Portier, K.M. 1992. Principles of Reef Study Design, in: Environmental and Fishery Performance of Florida Artificial Reef Habitats: Guidelines for Technical Evaluation of Sites Developed with State Construction Assistance, W. Seaman, Jr. (ed.), Florida Sea Grant College Program, Gainesville, FL, pp 37-61.
   4. Portier, K.M., 1992. Reef Data Management at the Local Level, in: Environmental and Fishery Performance of Florida Artificial Reef Habitats: Guidelines for Technical Evaluation of Sites Developed with State Construction Assistance, W. Seaman, Jr. (ed.), Florida Sea Grant College Program, Gainesville, FL, pp 199-204.
   5. Portier, K.M., and R.C. Littell. 1994. Statistical Analysis of Agricultural Water Consumption Data - Citrus Analysis. Project Report, 29 pages.
   6. Portier, K.M., and R.C. Littell. 1994. Statistical Analysis of Agricultural Water Consumption Data - Potato Crop Analysis. Project Report, 43 pages.
   7. Portier, K.M., and R.C. Littell. 1994. Statistical Analysis of Agricultural Water Consumption Data - Nursery Crop Analysis. Project Report, 36 pages.
   8. Portier, K.M., Y. Um, R.L. Degner, S.K. Mack, and C.M. Adams. 1995. Statistical Analysis of Florida Per Capita Fish and Shellfish Consumption Data. Florida Agricultural Market Research Center Industry Report 95-1, University of Florida, Institute of Food and Agricultural Sciences, December, 1995, 173 pages.
   9. Lefebvre, L.W., B.B. Ackerman, K.M. Portier, and K.H. Pollock. 1995. Aerial Surveys as a Technique for Estimating Trends in Manatee Population Size - Problems and Prospects, in: Population Biology of the Florida Manatee, T. J. O'Shea, B.B. Ackerman and H. F. Pervical (eds.). Information and Technology Report 1, August 1995, National Biological Service, U. S. Department of Interior, Washington, D. C. p63-74