growth curves. The following interpretation of growth rates for 

 Amblema plicata , the most frequently recaptured species (116 

 recaptures) , is based on available data and does not account for 

 differences in mean size and age of mussels from different plots, 



Growth rates for Amblema plicata were greater in the 

 downstream control plot than in either of the fleeted plots 

 (Figure 10) . Both growth and mortality rates for this species 

 were greater in the pilings (0.022 cm/month, 13.5%) than in the 

 grounded plot (0.017 cm/month, 5.0%). 



38 



