CROSSWHITE 1 Limnology/Aquatic Biology Hutchinson, G. E. 1957. The paradox of the plankton. Amer. Natur. 95:137-145. Lind, O. T. 1985. Handbook of commen methods in limnology. Kendall/Hunt Publishing, Dubuque, Iowa. Merritt, R. W. and Cummins,K.W. (Eds.). 1984. An introduction to the aquatic insects of North America 2nd edition. Kendall/Hunt Publishing, Dubuque, Iowa, USA. Muenscher, W.C. 1944. Aquatic plants of the united states. Cornell Univ. Press, Ithica, NY Needham, J. G. and P. R. Needham. 1962. A guide to the study of fresh-water biology. HoldenDay, San Francisco, CA. Pennak, R. K. 1989. Fresh-water invertebrates of the United States. John Wiley and Sons, New York, New York, USA. Prescott, G. W. 1970. How to know the freshwater algae. Wm. C. Brown, Dubuque, Iowa. Small, A.M., W.H. Adey, S.M. Lutz, E.G. Reese, and D.L. Roberts. 1996. A macrophytebased rapid biosurvey of stream water quality: restoration at the watershed scale. Restoration Ecology 4: 124-145. Soil Conservation Service. 1991. Water qulity indicators guide: surface waters. SCS-TP-161 US Dept of Agriculture. Wetzel, R. G. 1983. Limnology 2nd edition. Saunders College, Fort Worth, TX. Whitford, L. A. and G. J. Schumacher. 1984. A manual of the freshwater algae. Sparks Press, Raleigh,NC.