The distribution of krill catches in relation to predator colonies in Subareas 48.1 and 48.2 is shown. 74-90% of catches in Subarea 48.1 are taken within 100 km of predator colonies between December and March, and these are between 10 and 18% of the estimated total penguin consumption in this period. The pattern of fishing is very consistent in all years 1988-1991 in Subarea 48.1, but is more variable in Subarea 48.2 where 1989 and 1990 show highly mobile fishing patterns. 53-78% of total catches in Subarea 48.2 are taken within the ’critical period’ defined above, and these are between 2 and 45% of the estimated total penguin consumption. The largest catch taken in this critical period was 94 860 tonnes in Subarea 48.1, in 1989, and 88 139 tonnes in Subarea 48.2 (1991).
Krill catch distribution in relation to predator colonies, 1987-1991
Document Number:
WG-KRILL-92/18
Agenda Item(s)
Abstract