Hudson-Raritan Estuary 



140 



2 120 



C 



o 



° 100 - 



o 



b 



Z^ 80 1 



> 

 "> 60 



3 

 (A 



■D 40 - 

 O 

 Q. 



q. 20 



E 

 < 



o 



c 



<t o 

 o 



-L- 



_l_ 



cP 



<§ 



cP 



oo 



oo" 



O ERM=0.71 

 O 



-L. 



Rho = -0.435, 

 p<0.05 



O 

 O 



1 



T 

 2 



fl 



O O 



Hg, ug/g 



Figure 30. Relationship of amphipod survival to 

 mercury concentrations in sediments. 



O 



15 



O 

 U 



c 

 a> 

 u 



i_ 



<D 



Q. 



tn 

 <a 



o 

 in 

 O 



LU 

 X 



o 



1800 



1600 



1400 



1200 



1000 



800 



600 



400 



200 







Hudson-Raritan Estuary 

 -\ -I ■ ■ ■ ■ ■ •- 



:o° 



ERM = 15 



Rho =-0.405, 

 p<0.05 



r 



20 



T- 

 40 



o o o 

 I • I ■ 



60 80 



4,4-DDE, ng/g 



i • i • i • i « i « r 



100 120 140 160 180 200 



Figure 31. Relationship of microbial bioluminescence 

 EC50s to 4,4-DDE concentrations in sediments. 



85 



