i 



Pine Creek Station 1. This sample was very sparse. The 

 most abundant diatoms were species of Gomphonema . 



Tom Miner Creek Station 1. The Cladophora in this sample 

 was sparsely branched and resembled Rhizocloniwn . 



Tom Miner Creek Station 2. Mosses dominated this sample. 

 The Cladophora in this sample was sparsely branched and resembled 

 Rhizoclonium . 



NON-DIATOM ALGAE 



The periphyton sample from Mill Creek was dominated by 

 Ulothrix zonata, a filamentous green alga, and by diatoms; 

 cyanobacteria were rare (Table 4) . Ulothrix zonata is commonly 

 found in cold, rapidly flowing streams that are somewhat enriched 

 with nutrients . 



The sample from Pine Creek contained chrysophytes and 

 cyanobacteria, but no green algae (Table 4) . Only two genera of 

 non-diatom algae were observed. Algal assemblages with few taxa 

 and a small number of cells are typical of very cold mountain 

 streams with steep gradients and low nutrient concentrations. 

 Hydrurus foetidus , a cold-water chrysophyte, ranked first in 

 biovolume and diatoms ranked second; cyanobacteria {Phormidium 

 sp.) ranked third at this station. 



Samples from both sites on Tom Miner Creek contained a mix of 

 green algae, diatoms, and cyanobacteria (Table 4) . Diatoms were 

 the most abundant algae at both sites, followed by the green 

 filamentous alga Cladophora. In addition, both sites contained 

 the red alga Audouinella. Euglena, an indicator of organic 

 enrichment, was rare at the upstream site (Station 1) . The algal 

 assemblages in Tom Miner Creek indicate a moderate level of 



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