Above Cyclone Creek. Large amounts of fine particulate organic matter and fine to 

 medium inorganic sediment were present. Macrophytes and moss were both present. 



Non-Diatom Algae (Table 3) 



Tally Lake Campground . This site was dominated by cyanobacteria with heterocysts 

 (Rivularia and Nostoc), which are capable of fixing atmospheric (molecular) nitrogen. The 

 abundance of these algae indicates probable nitrogen-limiting conditions at this site. The rare 

 and pollution-sensitive brown alga Heribaudiella was abundant here and ranked third in 

 biovolume, followed by diatoms, which were frequent and ranked fourth (Table 3). An 

 occasional red alga {Audouinella) was found in this sample but green algae (i.e., Stigeoclonium) 

 were rare. Collectively, the non-diatom algal assemblage at this site indicates cool flowing 

 waters with low nutrient (especially nitrogen) concentrations. 



Above Star Meadows . The algal flora at this site was similar to the flora downstream at 

 the Tally Lake Campground, except that one of the dominant cyanobacteria here {Oscillatoria) 

 does not fix nitrogen under aerobic conditions. However, Nostoc was a co-dominant at this site 

 and this genus does fix nitrogen. Diatoms were abundant and ranked third at this site, follov/ed 

 by three genera of green algae, which ranged in abundance from abundant {Closterium) to 

 common (Chaetophoni) to rare {Cosmahum). Collectively, the algae at this site also indicate 

 cool flowing waters with low concentrations of inorganic nutrients. 



Above Cyclone Creek. This site was dominated by the green alga Closterium, the 

 chrysophyte Vaucheria, and by diatoms (Table 3). The cyanobacterium Oscillatoria was also 

 abundant here and ranked fourth. Green algae were more common and the number of genera of 

 green algae (7) was much larger here than at the two downstream stations. This, coupled with an 

 absence of nitrogen-fixing cyanobacteria, indicates elevated nitrogen concentrations compared to 

 the downstream sites. Dominance by Vaucheria indicates steady flows of cool waters. 



