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

 Categories that represent significant declines in water quality from the upstream site 

 to the downstream site are given in bold type. 



Ecological Attribute 



Motility' 



Salinity^ 

 Nitrogen Uptake^ 



Oxygen Demand^ 



Saprobity^ 



Trophic State^ 



alpha-Mesosaprobous 



Eutraphentic 



alpha-Mesosaprobous 



Eutraphentic 



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

 Van Dametal. 1994 



