Table 5. Modal categories for selected ecological attributes of diatom species in Jackson Creek, Jennies 

 Fork, and Granite Creek in 2002. 



Ecological Attribute 



Jackson Creek 

 near mouth 



Jennies Fork 

 below ski parking 



Granite Creek 

 near mouth 



Motility^ 



Not 

 Motile 



Not 

 Motile 



Not 

 Motile 



PH^ 



Alkaliphiious 



Circumneutral 



Alkaliphiious 



Salinity 



Fresh- 

 Brackish 



Fresh- 

 Brackish 



Fresh- 

 Brackish 



Nitrogen Uptake 



Autotrophs 



(tolerate high 



organics) 



Autotrophs 



(tolerate high 



organics) 



Autotrophs 



(tolerate high 



organics) 



Oxygen Demand 



Continuously High (31%) Continuously High (49%) 

 Moderate (24%) Moderate (23%) 



Moderate (47%) 



Fairly High (21%) 



Saprobity 



beta-Mesosaprobous 



beta-Mesosaprobous 



beta-Mesosaprobous 



Trophic State 



Variable 



Variable 



Eutraphentic 



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



'^Van Dam et al. 1994 



