Scope for Efficient Multinational Exploitation of North-East Atlantic Mackerel

Download 3.63 Mb.

1 2 3 4 5 6 7 8 9 ... 44

Entry numbers into the age-0 cohort in subsequent seasons, and into older cohorts in all seasons, depend on aggregate fishing mortality

at an annual rate across all players j for cohort a in season s of year y:

where

are age-specific selectivity coefficients which translate the across-cohort fishing mortality

into cohort specific fishing mortality. Natural annual mortality m, constant across all age classes, is added to obtain total mortality, giving the updating equation as:

Download 3.63 Mb.

Share with your friends:

1 2 3 4 5 6 7 8 9 ... 44

Scope for Efficient Multinational Exploitation of North-East Atlantic Mackerel