What data are needed
and who will provide them?
¥
N
t+1
= N
t
+B-D+I-E
¥
¥
For
Pseudocalanus
É
¥
N = population
Bucklin, Durbin
¥
B = birth rates
Runge
¥
D = mortality
Runge, Ohman
¥
I = immigration
Pringle, McGillicuddy
¥
E = emigration
Pringle, McGillicuddy