POPULATION DYNAMICS OF THE ATLANTIC HERRING 



THE PERIOD BEFORE THE 

 FIRST WORLD WAR. 



THE INTER-WAR YEARS. 



THE POSTWAR PERIOD- 



TRAWL 



DRIFT 



INDUSTRIAL FISHERY (TRAWL 



CONTINENTAL LUGGER(DRIFT) 



i 



Fig. 3. — The distribution of herring fishing by drift net and trawl in the North Sea in the 

 periods prior to 1914, in the inter-war years and since 1945. 



