What data are needed
and who will provide
them?
¥Nt+1 = Nt+B-D+I-E
¥
¥
For
PseudocalanusÉ
¥
N =
population

Bucklin, Durbin
¥
B =
birth rates

Runge
¥
D =
mortality

Runge, Ohman
¥
I =
immigration
Pringle, McGillicuddy
¥
E =
emigration
Pringle, McGillicuddy