Hannaea 



1032 12th Avenue Helena, MT 59601 (406)443-2196 

 hannaea@montana.com 



Diatom Report 



Sample: 261601 



Client ID: C10ELKC01 



Sample Location: Elk Creek Reach 3 



Sample Date: 9/4/02 



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Diatom Species 



Genus/Species/Variety 



Achnanthes biasolettiana 

 Achnanthes bioretii 

 Achnanthidium minutissimum 

 Cocconeis placentula 

 Cymbella excislformis 

 Cymbella leptoceros 

 Encyonopsis microcephala 

 Eucocconeis laevis 

 Gomphonema cuneolus 

 Gomphonema dichotomum 

 Gomphonema minusculum 

 Gomphonema olivaceoides 

 Gomphonema pumilum 

 Navicula bremensis 

 Navicula cari 

 Reimeria sinuata 

 Synedra rumpens 



Percent Relative Abundance 



0.24 

 0.12 

 73.23 

 1.32 

 0.12 

 0.24 

 0.84 

 0.48 

 0.84 

 9.12 

 0.24 

 5.16 

 0.48 

 0.12 

 0.12 

 7.08 

 0.24 



Diatom Metrics 



Metric 



Valves Counted 



Cells Counted 



Total Number of Species 



Total Number of Species Counted 



Percent Dominant Species 



Shannon's Diversity Index 



Pollution Index 



Category 



Value 



833 



416.5 

 17 

 17 



73.23 



1.54 

 2.99 



Hannaea - Diatom Report 



Page 1 



2/5/03 



