LITERATURE CITED 



APHA. 1998. Standard Methods for the Examination of Water and 

 Wastewater. 20th Edition. American Public Health 

 Association, Washington, D.C. 



Bahls, L.L. 1979. Benthic diatom diversity as a measure of 

 water quality. Proc . Mont. Acad. Sci. 38:1-6. 



Bahls, L.L. 1993. Periphyton Bioassessment Methods for Montana 

 Streams (Revised) . Montana Department of Health and 

 Environmental Sciences, Helena. 



Bahls, L.L., Bob Bukantis, and Steve Tralles. 1992. Benchmark 



Biology of Montana Reference Streams . Montana Department of 

 Health and Environmental Sciences, Helena. 



Bahls, L.L., E.E. Weber, and J. O. Jarvie. 1984. Ecology and 

 Distribution of Major Diatom Ecotypes in the Southern Fort 

 Union Coal Region of Montana. U.S. Geological Survey 

 Professional Paper 1289, U.S. Government Printing Office, 

 Washington. 



Barbour, M.T., J. Gerritsen, B.D. Snyder, and J.B. Stribling. 



1999. Rapid Bioassessment Protocols for Use in Streams and 

 Wadeable Rivers: Periphyton, Benthic Macroinvertebrates and 

 Fish. Second Edition. EPA/841-B-99-002 . U.S. EPA, Office 

 of Water, Washington, D.C. 



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. 



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