• 



Table 4. Relative abundance of cells and ordinal rank by biovolume of diatoms (Division Bacillariophyta) 

 and genera of non-diatom algae in periphyton samples collected from the Big Hole River TMDL 

 Planning Area in 2003: d - dominant, a = abundant, f = frequent, c = common; o = occasional; 



r = rare, (continued) 



Taxa DLNOC01 DLNOC02 DLNOC03 CHRGC01 ELKHC01 ELKHC02 FRANC01 



Cyanophyta 



Amphithrix 



Anabaena 



Calothrix c/3 c/3 



Chamaesiphon 



Merismopedia 



Nodularia 



Nostoc 



Oscillatoria c/2 o/2 o/5 0/6 



Phormidium f/4 



Symploca 



Tolypothrix 



Rhodophyta 



Audouinella 



Chlorophyta 



Ankistrodesmus 



Cladophora 



Closterium r/3 o/3 o/3 o/3 



Cosmarium o/5 



Draparnaldia 



Hormidium 



Microspora 



Mougeotia o/4 a/2 



Oedogonium 



Pediastrum 



Prasiola 



Scenedesmus 



Spirogyra 



Staurastrum 



Stigeoclonium 



Tetraspora 



Ulothrix f/2 



Zygnema d/1 



Euglenophyta 



Euglena 



Chrysophyta 



Hydrurus foetidus 



Tribonema o/2 o/2 



Vaucheria 



Bacillariophyta c/1 c/1 c/2 a/1 a/1 a/1 a/1 



No. Non-Diatom Genera 1 2 2 4 2 5 2 



