Figure F-2. Recaiitment of unionid mussel species at Sylvan Slough (RM 485.8) in Reach 1 5 of the Upper 

 Mississippi River, 1983, 1985, 1987, and 1994-95. Length-frequency distributions (Appendix 

 C) were used to calculate percentage (%) and density (no./m-) of individuals within the 

 specified size range 



Page F-3 



Whitney et al., Unionid Sun'ey - Reach 1 5 UMR 



