110
6. Spatial Fisheries Model
INFLOWS:
E_DOT = ALPHA* (P*V*E*N-J*E)
Ni[Regionl (t) = Ni[Regionl (t-dt) + (M[Regionl +
Ni_DOT[Regionl) * dt
INIT Ni[Regionl = 5000
INFLOWS:
M[Region_ll =
Ni [Region_21 *Mi [Region_21 *RAND[P211/RAND_N2
+ Ni[Region_31*Mi[Region_31*RAND[P311/RAND_N3
+ Ni[Region_41*Mi[Region_41*RAND[P411/RAND_N4
- Ni[Region_ll*Mi[Region_ll*RAND[P121/RAND_Nl
- Ni[Region_ll*Mi[Region_ll*RAND[P131/RAND_Nl
- Ni[Region_ll*Mi[Region_ll*RAND[P14J /RAND_Nl
M[Region_21 =
Ni[Region_ll*Mi[Region_ll*RAND[P121/RAND_Nl
+ Ni[Region_31*Mi[Region_31*RAND[P321 /RAND_N3
+ Ni[Region_41*Mi[Region_41*RAND[P42J /RAND_N4
- Ni[Region_21*Mi[Region_21*RAND[P21J /RAND_N2
- Ni[Region_21*Mi[Region_21*RAND[P231/RAND_N2
- Ni[Region_21*Mi[Region_21*RAND[P24J/RAND_N2
M[Region_31 =
Ni[Region_ll*Mi[Region_ll*RAND[P131/RAND_Nl
+ Ni[Region_21*Mi[Region_2J*RAND[P231/RAND_N2
+ Ni[Region_41*Mi[Region_4J*RAND[P43]/RAND_N4
- Ni[Region_3J *Mi[Region_3J*RAND[P311 /RAND_N3
- Ni[Region_31*Mi[Region_3J*RAND[P32J/RAND_N3
- Ni[Region_31*Mi[Region_31*RAND[P34J /RAND_N3
M[Region_41 =
Ni[Region_1J*Mi[Region_1J*RAND[P14J/RAND_Nl
+ Ni[Region_2] *Mi[Region_2] *RAND[P24J/RAND_N2
+ Ni[Region_31*Mi[Region_31*RAND[P341/RAND_N3
- Ni[Region_41*Mi[Region_41*RAND[P411 /RAND_N4
- Ni[Region_41*Mi[Region_4J*RAND[P421 /RAND_N4
- Ni[Region_41*Mi[Region_41*RAND[P431/RAND_N4
Ni_DOT[Regionl = Ri[Regionl*Ni[Regionl*(lNi[Regionl/Ki[Regionl)-V*Ei[Regionl*Ni[Regionl
ALPHA = .64
Di[Regionl = Ni[Regionl /N
Ei[Region_ll
Ei[Region_21
Ei[Region_3]
Ei[Region_41
Di [Region_ll *E
Di [Region_2] *E
Di[Region_3]*E
Di [Region_4] *E