296
13. Nil e Perch Population Dynamics in Lake Victoria:
0)+(IF(Fishwt[5]>(.3 *Fishwt[15]» AND (sus_mass [5]>0)
THEN(can[5]*(NP_mass[15] /sus_mass[5] » ELSE
0)+(IF(Fishwt[6]>(.3*Fishwt[15]» AND (sus_mass[61>0)
THEN(can[6]*(NP_mass[15] /sus_mass[6]» ELSE
0)+(IF(Fishwt[7]>(.3*Fishwt[15]» AND (sus_mass [7] >0)
THEN(can[7]*(NP_mass[15] /sus_mass[7]» ELSE
0)+(IF(Fishwt[81>(.3*Fishwt[151» AND (sus_mass [8]>0 )
THEN(can[8]*(NP_mass[15] /sus_mass[8]» ELSE
0)+(IF(Fishwt[9]>(.3*Fishwt[15]» AND (sus_mass [91>0)
THEN(can[9]*(NP_mass[15] /sus_mass[9]» ELSE
0)+(IF(Fishwt[10]>(.3*Fishwt[15]» AND (sus_mass [10]>0)
THEN(can[10]*(NP_mass[15] /sus_mass[101» ELSE
0)+(IF(Fishwt[11]>( .3*Fishwt[15]» AND (sus_mass [111>0)
THEN(can[ll] * (NP_mass[151 /sus_mass[11]» ELSE
0)+(IF(Fishwt[121>(.3*Fishwt[151» AND (s u s _ma s s [12]>0)
THEN(can[12]*(NP_mass[151 /sus_mass[121» ELSE
0)+(IF(Fishwt[131>(.3*Fishwt[15]» AND (sus_mass [13]>0)
THEN(can[131*(NP_mass[15] /sus_mass[131» ELSE
0)+(IF(Fishwt[14]>( .3*Fishwt[15]» AND (sus_mass [14]>0)
THEN(can[14] *(NP_mass[151 /sus_mass[14]» ELSE 0)
Natural_Mortality [16] = (IF(Fishwt[11>( .3*Fishwt[16]»
AND (sus_mass [1]>0)
THEN(can[11* (NP_mass[161 /sus_mass[11» ELSE
0)+(IF(Fishwt[21>( .3*Fishwt[16])) AND (sus_mass [2] >0)
THEN(can[2]*(NP_mass[16] /sus_mass[2]») ELSE
0)+(IF(Fishwt[31> (.3*Fishwt[161») AND (sus_mass [31>0)
THEN(can[31*(NP_mass[16] /sus_mass[31» ELSE
O)+(IF(Fishwt[4] >( .3*Fishwt[16]» AND (sus_mass [4]>0)
THEN(can[41*(NP_mass[16] /sus_mass[4]» ELSE
0)+(IF(Fishwt[51>( .3*Fishwt[16]» AND (sus_mass[5]>0)
THEN(can[51*(NP_mass[16] /sus_mass[5] » ELSE
0)+(IF(Fishwt[61 >(.3*Fishwt[161» AND (sus_mass [6]>0)
THEN(can[61*(NP_mass[161 /sus_mass[61» ELSE
0)+(IF(Fishwt[71>(.3*Fishwt[161» AND (sus_mass[7]>0)
THEN(can[7]*(NP_mass[16] /sus_mass[7]» ELSE
0)+(IF(Fishwt[8]>(.3*Fishwt[16]» AND (sus_mass [8]>0)
THEN(can[8] *(NP_mass[16] /sus_mass[8]» ELSE
O)+(IF(Fishwt[9]>(.3*Fishwt[16]» AND (sus_mass [9]>0)
THEN(can[9]*(NP_mass[16] /sus_mass[9]» ELSE
0)+(IF(Fishwt[10]>(. 3*Fishwt[16])) AND (sus_mass [10]>0)
THEN(can[10]*(NP_mass[16] /sus_mass[10]» ELSE
0)+(IF(Fishwt[11] >(.3*Fishwt[16]» AND (sus_mass[ll]>O )
THEN(can[11]*(NP_mass[161 /sus_mass[11]» ELSE