Bahls, L.L., Bob Bukantis. and Steve Tralles. 1992. Benchmark Biology of Montana Reference Streams. Montana 

 Department of Health and Environmental Sciences, Helena. 



Barbour. M.T., J. Gemtsen. B.D. Snyder, and J.B. Stribling. 1999. Rapid Bioassessment Protocols for Use 

 In Streams and Wadeable Rivers: Penphyton, Benthic Macroinvertebrates and Fish. Second Edition. 

 EPA/84 l-B-99-002. U.S. Environmental Protection Agency, Office of Water, Washington, D.C. 



Beaver, Janet. 1981. Apparent Ecological Characteristics of Some Common Freshwater Diatoms. 

 Ontario Ministry of The Environment, Technical Support Section, Don Mills, Ontario. 



Johansen, J.R. 1999. Diatoms of Aerial Habitats. Chapter 12 m Stoermer, E.F., and J.P. Smol (eds.). The Diatoms: 

 Applications For the Environmental and Earth Sciences, Cambridge University Press, New York. 



John, D.M., B.A. Whmon, and A.J. Brook (eds.). 2002. The Freshwater Algal Flora of the Bntish Isles: An 

 Identification Guide to Freshwater and Terrestrial Algae. Cambridge University 



Karr, J.R., and D.R. Dudley. 1981. Ecological perspectives on water quality goals. Environmental Management 

 5:55-69. 



Krammer, Kurt. 2002. Cymbella. Volume 3 in Diatoms of Europe, Horst Lange-Bertalot, ed. A.R.G. Gantner 

 Verlag K.G., Germany. 



Krammer, K., and H. Lange-Bertalot. 1986. Bacillariophyceae, Part 2, Volume 1 : Naviculaceae. InEttl, H., J 

 Gerloff, H. Heynig, and D. Mollenhauer (eds.), Freshwater Flora of Middle Europe. Gustav Fischer Publisher, 

 New York. 



Krammer, K., and H. Lange-Bertalot. 1988. Bacillariophyceae, Part 2, Volume 2: Bacillariaceae, Epithemiaceae, 

 Sunrellaceae. In Ettl, H., J. Gerloff, H. Heynig, and D. Mollenhauer (eds.), Freshwater Flora of Middle Europe. 

 Gustav Fischer Publisher, New York. 



Krammer, K., and H. Lange-Bertalot. 1991a. Bacillariophyceae, Part 2, Volume 3: Centrales, Fragilariaceae, 

 Eunotiaceae. In Ettl, H., J. Gerloff, H. Heynig, and D. Mollenhauer (eds.). Freshwater Flora of Middle Europe. 

 Gustav Fischer Publisher, Stuttgart. 



Krammer, K., and H. Lange-Bertalot. 1991b. Bacillariophyceae, Part 2, Volume 4: Achnanthaceae, Critical 



Supplement to Navicula (Lineolatae) and Gomphonema, Complete List of Literature for Volumes 1-4. In Ettl, 

 H., G. Gartner, J. Gerloff, H. Heynig, and D. Mollenhauer (eds.). Freshwater Flora of Middle Europe. Gustav 

 Fischer Publisher, Stuttgart. 



Lange-Bertalot, Horst. 1979. Pollution tolerance of diatoms as a criterion for water quality estimation. 

 Nova Hedwigia 64:285-304. 



Lange-Bertalot, Horst. 1996. Rote Liste der limnischen Kieselalgen (Bacillariophyceae) Deutschlands. Schr.-R. f 

 Vegetationskde., H. 28, pp. 633-677. BfN, Bonn-Bad Godesberg. 



Lange-Bertalot, Horst. 2001 . Navicula sensu stricto: 10 Genera Separated from Navicula sensu lato; Frustulia. 

 Volume 2 in Diatoms of Europe, Horst Lange-Bertalot, ed. A.R.G. Gantner Verlag K.G., Germany. 



Lowe, R.L. 1974. Environmental Requirements and Pollution Tolerance of Freshwater Diatoms. 



EPA-670/4-74-005. U.S. Environmental Protection Agency, National Environmental Research Center, 

 Office of Research and Development, Cincinnati, Ohio. 



McFarland, B.H., B.H. Hill, and W.T. Willingham. 1997. Abnormal Fragilaria spp. (Bacillariophyceae) 

 In streams impacted by mine drainage. Journal of Freshwater Ecology 12(1): 14 1-149. 



