POPULATION DYNAMICS OF THE ATLANTIC HERRING 5 



made of this long standing viewpoint and attention to be paid to the popula- 

 tion dynamics of the exploited herring stocks. In this period major changes 

 have taken place in the nature and size of the herring fisheries in the North 



6a 



ATLANTO-SCANDIAN 



SPRING SPAWNING 

 POPULATION. 



Fig. I. — Approximate boundaries and area of overlap between North Sea 

 and Atlanto-Scandian herring tribes. 



Sea; the British component of this fishery at East Anglia has declined 

 alarmingly; changes have taken place in the abundance and composition of 

 the exploited stock, and changes have been detected in certain of the bio- 



