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

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



Bahls, L., R. Bukantis, and S. Tralles. 1992. Benchmark Biology 

 of Montana Reference Streams . Montana Department of Health 

 and Environmental Sciences, Helena. 



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



1999. Revision to Rapid Bioassessment Protocols for Use in 

 Streams and Rivers: Periphyton, Benthic Macroinvertebrates , 

 and Fish. EPA 841-D-97-002 {Revised 1999) . 



Bukantis, R. 1998. Rapid Bioassessment Macroinvertebrate 



Protocols: Sampling and Sample Analysis SOPs . Montana 

 Department of Environmental Quality, Helena. 



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

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



Lange-Bertalot , H. 1979. Pollution tolerance of diatoms as a 

 criterion for water quality estimation. Nova Hedwigia 

 64 :285-304 . 



McFarland, B.H., B.H. Hill, andW.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. 



Omernik, J.M., and A.L. Gallant. 1987. Ecoregions of the west 

 central United States (map) . U.S. Environmental Protection 

 Agency, Corvallis, Oregon. 



Stevenson, R.J., and L.L. Bahls. 1999. Chapter 6, Periphyton, 

 in Barbour, M.T., J. Gerritsen, B.C. Snyder, and J.B. 

 Stribling, Revision to Rapid Bioassessment Protocols for Use 

 in Streams and Rivers: Periphyton Macroinvertebrates, and 

 Fish. EPA 841-D-97-002 (Revised 1999) . 



Whittaker, R.H. 1952. A study of summer foliage insect 



communities in the Great Smokey Mountains. Ecological 

 Monographs 22:6. 



11 



