• 



ble 4. Monitoring transect data, Howellia aquatilis and major 



associated species, Swan Valley, Montana, 1988-89. Cover 

 data expressed as percentage of transect length occupied by 

 the "canopy" of each species, as measured along line- 

 intercept transects. 



Occurrence number 



008 



009 



013 



020 



027 



Water depth (dm) 



% frequency (1989) : 56 



36 



69 



95 



40 



Alopecurus 

 aequalis 



8.74 



Carex atherodes 



Carex rostrata 



La rex vesicaria 



