Table 5. Modal categories for selected ecological attributes of diatom species in Beaver Creek near 

 Lewistown in 2003. Values that represent inferior water quality whien compared to the best 

 site in the sample set are given in bold type. 



Ecological Attribute 



M22BEVRC01 



M22BEVRC02 



M22BEVRC04 



Motility' 



Salinity^ 

 Nitrogen Uptake^ 



Oxygen Demand^ 

 Saprobity^ 



beta-Mesosaprobous beta-Mesosaprobous beta-Mesosaprobous 



Trophic State 



Variable 



Eutraphentic 



Eutraphentic 



'Dr. R. Jan Stevenson, Michigan State University, digital communication. 



Van Dam et al. 1994 



