Table 5. Relative abundance of cells and rank by biovolume of 

 ■ diatoms and genera of non-diatom algae in periphyton 

 samples collected from Ward Creek on June 20, 2001. 



Taxa 



Relative Abundance and (Rank) 

 WardC-01 WardC-02^ 



Chlorophyta (green algae) 

 Cladophora 

 Closterium 

 Scenedesmus 

 Stigeoclonium 

 Ulothrix 



rare (5) 



frequent {2] 

 common (8) 



common (9) 

 frequent (3] 



Chrysophyta (golden algae) 



Bacillariophyceae (diatoms) 

 Vaucheria 



abundant ( 2 ) abundant ( 1 ) 

 occasional (7) 



Rhodophyta (red algae) 

 Audouinella 



abundant (3) frequent (4) 



Cyanophyta (cyanobacteria) ^ 

 Nostoc 

 Oscillatoria 

 Phormidium 

 Rivularia 



abundant ( 1 ) 

 occasional (4! 



frequent (6) 



abundant (5) 



common (10) 



^ Moss was present in this sample and it accounted for most of 

 the biomass. 



Formerly known as blue-green algae 



