e.g., 1869-02. The first part of this number (1869) designates 

 the sample site (0' Fallon Creek at Willard Crossing); the second 

 part of the number (02) designates the number of periphyton 

 samples that have been collected at this site to date for which 

 data have been entered into the Montana Diatom Database . 



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 through 7, located near 

 the end of this report following the references section. 

 Spreadsheets containing completed diatom proportional counts, 

 with species' pollution tolerance classes and percent abundances, 

 are attached as Appendix A. 



SAMPLE NOTES 



O'Fallon Creek at Willard Crossing (OF-7). The sample from 

 this site contained Myriophyllum and Ranunculus. 



O'Fallon Creek below Willard Crossing (AF-3) . The sample 

 from this site was very silty and contained Myriophyllum and 

 Zanichellia. 



