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

 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 (Lmeolatae) 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. 1993. 85 new taxa and much more than 100 taxonomic clarifications supplementary to 

 Susswasserflora von Mitteleuropa Vol. 2/1-4. J. Cramer, Berlin. 



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. 



Morales, E.A., and Manna Potapova. 2000. Third NAWQA Workshop on Harmonization of Algal Taxonomy, 

 May 2000. Patrick Center for Environmental Research, The Academy of Natural Sciences, Philadelphia. 



Palmer, CM. 1969. A composite rating of algae tolerating organic pollution. Journal of Phycology 5:78-82. 



Palmer, CM. 1977. Algae and Water Pollution: An Illustrated Manual on the Identification, Significance, and 

 Control of Algae in Water Supplies and in Polluted Water. EPA-600/9-77-036. 



Plafkin, J.L., M.T. Barbour, K.D. Porter, S.K. Gross, and R.M. Hughes. 1989. Rapid Bioassessment Protocols for 

 Use in Rivers and Streams: Benthic Macroinvertebrates and Fish. EPA 440-4-89-001. 



Prescott, G.W. 1962. Algae of the Western Great Lakes Area. Wm. C Brown Company, Dubuque, Iowa. 



Prescott, G.W. 1978. How to Know the Freshwater Algae. Third Edition. Wm. C. Brown Company Publishers, 

 Dubuque, Iowa. 



Reichardt, Erwin. 1997. Taxonomische Revision des Artenkomplexes um Gomphonema pumilum 

 (Bacillanophyta). Nova Hedwigia 65(1-4) :99-129. 



Reichardt, Erwin. 1999. Zur Revision der Gattung Gomphonema, A.R.G. Gantner Verlag, Distributed by Koeltz 

 Scientific Books, Konigstein, Germany. 



Renfro, H.B., and D.E. Feray. 1972. Geological Highway Map of the Northern Rocky Mountain Region. 

 American Association of Petroleum Geologists, Tulsa, Oklahoma. 



16 



