no 





Royal River - Relative Abundance 





a> 



C 80% 





:■?'*:;: 





'■'0<. 





















n Freshwater the. 



































DMarsh Ag. 





§ 60% - 





















DMudtiat Ca. 





£i 

 < 





















13 Shelf Ag. 





<u 40% - 

 > 



IS 



oS 20% - 





















■ Shelf Ca. 













Di 































RR-6 RR-5 RR-3F RR-3M 







Core Locations 



A 





B 



No. of 

 Trays 



ISO- 

 i2l60 



-100 



o 



w 80 



d) 



Si 60 

 E 

 3 40 



20 







Royal River Numbers of Individuals Counted 



3 4 4 4 



ID Freshwater the. 

 DMarsh Ag. 

 DMudflat Ca. 

 B Shelf Ag. 

 ■ Shelf ca. 



RR-6 



RR-5 RR<3F 



Core Locations 



Figure 4-31. Histograms of relative abundance of microfossils and the numbers of 



individuals counted for the given number of trays analyzed for additional 

 Royal River cores. Core RR-3 had similar abundances of microfossils 

 preserved in formalin (F) and methanol (M) 



The Portland Disposal Site Capping Demonstration Project, 1995-1997 



