90 



20 



a 15 



sz 



D 

 CU 



< 10 



5 ■ 



2.0 



^ 1.5H 

 -i-j 



D 1.0 



O0.5H 



■I — ( 



(J) 



2 0.0 



-0.5 



55 



50 55 



50 



65 70 



Year 



75 



60 



60 



65 70 



Year 



75 



80 



Figure 9. Recent changes in eelgrass cover and benrh erosion on 

 West Island. 



Top: eelgrass area (corrected for percent cover) in East Bay 1951- 

 1981. Bottom: Mean erosion rates at eight stations along shore (+/- 

 SE) , during the same period. 



