South Fork Teton River at Abbott's (#4) . Diatoms were very- 

 sparse in this sample. 



Teton River at Gaging Station (#1) . Diatoms were sparse. 



Teton River near Collins (#13) . This sample was silty and 

 diatoms were sparse . 



Teton River at Kelly Ranch ("new site") . The Cladophora 

 in this sample was senescent. The sample was silty. 



NON- DIATOM ALGAE 



Algae were sparse in all of the samples (Table 5) . Diatoms 

 were rare to common and the only group present at all of the 

 sites. Besides diatoms, only two genera of green algae and two 

 genera of bluegreen algae were present . 



Diatoms were rare in the samples from the North and South 

 Forks. The small standing crops of algae here probably reflect 

 low nutrient concentrations at these sites. The mainstem 

 supported larger standing crops. Phormidium, a eurytopic 

 cyanobacterium with many species, was the most abundant taxon at 

 these Teton River sites. Cladophora was present (but not 

 abundant) only at the farthest downstream site (Kelly Ranch) . 



DIATOMS 



The sample from the North Fork at the trailhead did not have 

 enough diatoms to warrant making diatom slides. Slides prepared 

 from samples collected at the 2 South Fork sites did not have 

 enough diatoms to allow for a proportional count of 800 valves. 

 For these reasons, diatom metrics could not be generated for 

 these 3 sites. 



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