Dillard, G.E. 1999. Common Freshwater Algae of the United 

 States. J. Cramer, Berlin. 



Johansen, J.R. 1999. Diatoms of Aerial Habitats. Chapter 12 in 

 Stoermer, E.F., and J. P. Smol (eds.), The Diatoms, Cambridge 

 University Press, New York. 



Karr, J.R., and D.R. Dudley. 1981. Ecological perspectives on 

 water quality goals. Environmental Management 5:55-69. 



Krammer, K., and H. Lange-Bertalot . 1986. Bacillariophyceae, 

 Part 2, Volume 1: Naviculaceae . 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. 1988. Bacillariophyceae, 

 Part 2, Volume 2: Bacillariaceae, Epithemiaceae , 

 Surirellaceae . 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. Red list of limnic diatoms from 

 Germany. Schr.-R. f. Vegetationskde . , H. 28, pp. 633-677. 

 BfN, Bonn-Bad Godesberg. 



Lowe, R.L. 1974. Environmental Requirements and Pollution 

 Tolerance of Freshwater Diatoms. EPA-670/4- 74-005 . 



McFarland, B.H., B.H. Hill, and W.T. Willingham. 1997. Abnormal 

 Fragilaria spp . (Bacillariophyceae) in streams impacted by 

 mine drainage. Jour, of Freshwater Ecology 12 (1) : 141- 149 . 



MDEQ. 1998. Waterbodies in Need of TMDL Development. Montana 

 Department of Environmental Quality, Helena. 



13 



