NON-DIATOM ALGAE 



Careless Creek 



The dominant alga in Careless Creek was Cladophora, a 

 branched filamentous green that prefers cool, nutrient-rich, 

 flowing waters. Also common here, besides diatoms, were two 

 genera of cyanobacteria : Calothrix and Phormidium (Table 4). 



LodQepole Creek 



Lodgepole Creek and the South Fork of Lodgepole Creek both 

 supported a rich variety of green, blue-green, and euglenoid 

 algae, besides diatoms (Table 4) . The green macroalga Chara 

 dominated the flora of Lodgepole Creek, while the unbranched 

 filamentous green Spirogyra was most abundant in the South Fork, 

 where Chara ranked second in abundance . 



Chara prefers soft-bottom, low-gradient, hardwater streams. 

 Spirogyra, along with Anajbaeria and Euglena, which were found in 

 both streams, may indicate elevated concentrations of nutrients. 

 The presence of Chaetophora and Cladophora in the South Fork 

 (Table 4) indicates cool water temperatures relative to main 

 Lodgepole Creek, where these genera were absent. 



DIATOMS 



Careless Creek 



Careless Creek supported a rich diversity of diatom species 

 (Table 5). Nevertheless, the dominant diatom here was the 

 pollution-tolerant species Navicula durrenbergiana, which has 

 been reported from brackish to saline waters in Europe and Israel 

 (Krammer and Lange-Bertalot 1986) . In the Southern Fort Union 



