Sample observations and analyses of soft (non-diatom) algae 

 were recorded in a lab notebook. A portion of the raw sample was 

 used to make duplicate diatom slides. 



On completion of the project, station information, sample 

 information, and diatom proportional count data will be entered 

 into the Montana Diatom Database. One set of diatom slides will 

 be deposited in the University of Montana Herbarium in Missoula. 

 The other set of slides will be retained by Hannaea in Helena. 



RESULTS AND DISCUSSION 



Results are presented in Tables 4 and 5, located near the 

 end of this report following the Literature Cited section. 

 Spreadsheets containing completed diatom proportional counts, 

 with species' pollution tolerance classes and percent abundances, 

 are attached as Appendix A. 



SAMPLE NOTES 



Redwater River above Fairgroiinds (RW-1) . Trichomes of 

 Oscillatoria in this sample did not have a visible sheath, but 

 they did form clumps several millimeters wide. The trichomes 

 were red in color and very thick. In mats, the trichomes were 

 oriented parallel to one another, or they were interwoven. The 

 Lyngbya in this sample had discoidal cells and a definite sheath; 

 no branching was observed. 



Redwater River below Circle lagoons (RW-3). At least two 

 species of Anabaena were observed in this sample, one with 

 straight trichomes and the other with coiled trichomes. 



