NON- DIATOM (SOFT) ALGAE 



Little Dry Creek 



The periphyton community of Little Dry Creek was dominated 

 by diatoms, with a mix of euglenoid algae and filamentous green 

 and bluegreen algae (Table 4) . The soft algal flora indicates 

 moderate nutrient enrichment, warm water, and slow current 

 velocities. 



Redwater River 



The upper site on the Redwater (RWl-3) was dominated by the 

 macroscopic green alga Chara. This alga is common in standing, 

 alkaline waters. The cyanobacterium Anajbaena, typlically a 

 planktonic alga, also indicated ponding in this reach. The 

 chrysophyte Trihonema indicated cool water temperatures and the 

 appearance of the green alga Stigeoclonium indicated nutrient 

 enrichment. 



Nutrient enrichment appeared to increase downstream at Kurtz 

 (RWl-9) , where Stigeoclonium became more abundant and the flora 

 was dominated by Rhizoclonium . Rhizoclonium is a sparsely 

 branched filamentous green alga closely related to Cladophora. 

 Anabaena and Tribonema were also present at this site. 



The site above Circle (RW2-D) had the lowest genus richness 

 of all the sites- -only 2 genera of soft algae were recorded. 

 However, this sample had partially decomposed before it was 

 analyzed and some soft algal taxa may have been lost. 



Below the Circle STP (RW2-F) , Enteromorpha was the most 

 abundant alga, followed by diatoms and Rhizoclonium (Table 4) . 

 Enteromorpha is a green alga of marine origin that prefers 



