ex 

 o 



> 



< 



X 

 UJ 

 CQ 



ID 



O 



tx 



ZD 

 CQ 



ID 



% 



100 



ANIMALS FROM A CONTROL AREA 



50- 







% 



o 



" 100 



CO 



• - 3-4 MM 



o = 8 " 

 . = 10-15 " 



ANIMALS FROM A CONTAMINATED LOCALITY 



60 105 mN 



Fig. 10.4.1 Macoma balthica burrowing behaviour 



214 



