Hannaea 



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

 hannaea@montana.com 



Diatom Report 



Sample: 261801 



Client ID: C10PIPRC02 



Sample Location: Piper Creek Reach 14 



Sample Date: 9/5/02 



Diatom Species 



Genus/Species/Variety 



Achnanthes biasoletiiana 

 Achnanthes pusilla 

 Achnanthidium minutissimum 

 Cocconeis placentula 

 Diatoma hyemalis 

 Diatoma mesodon 

 Encyonema silesiacum 

 Eucocconeis flexella 

 Fragilaria capucina 

 Gomphonema dichotomum 

 Gomphonema minusculum 

 Gomphonema olivaceoides 

 Reimeria sinuata 

 Staurosira construens 



Percent Relative Abundance 

 3.31 

 0.12 

 80.85 

 0.95 

 0.47 

 0.47 

 0.24 

 0.12 

 0.24 

 1.42 

 2.25 

 8.63 

 0.12 

 0.83 



Diatom Metrics 



Metric Category 



Valves Counted 



Cells Counted 



Total Number of Species 



Total Number of Species Counted 



Percent Dominant Species 



Shannon's Diversity index 



Pollution Index 



Pollution Tolerance (% by Category) Most Tolerant 



Pollution Tolerance (% by Category) Tolerant 



Pollution Tolerance (% by Category) Sensitive 



Value 



846 



423 



18 



14 



80.85 



1.2 



3 







0.47 



99.53 



Hannaea - Diatom Report 



Page 1 



2/5/03 



