13.5. Qu estions and Tasks
301
0)+(IF(Fishwt[ 2j>(. 3 *Fi shwt[ 2 0j ) ) AND (s u s _ma s s [2 j>0 )
THEN(can[ 2j *(NP_mass [20 j / sus_mass[2j)) ELSE
0)+( IF(Fishwt [3 j> (. 3 *Fishwt [20 ] ) ) AND (s u s _ma s s [3 ] >0 )
THEN(can[ 3 ]* (NP_mass [20 ] /sus_mass [3 ] ) ) ELSE
0) + (IF (Fishwt[4j> ( . 3 *Fi shwt [20 j ) ) AND (sus _ma s s [4 ] >0)
THEN( can [4] *( NP_mass [20 ] /sus_mass[4 ] )) ELSE
0) +(IF (Fi s hwt [5] >(.3 *Fishwt[20]) ) AND (s us _ma s s [ 5 ] >0 )
THEN(can [5] *( NP_mass [2 0] /sus_mass[5 ]) ) ELSE
0)+(IF (Fishwt[ 6] > (. 3 *Fi shwt[ 2 0])) AND (s us _ma s s [ 6 ] >0 )
THEN(can[6]*(NP_mass [20] / sus_mass[ 6 j)) ELSE
0)+(IF(Fishwt[7]>(.3 *Fi shwt[20])) AND (sus_mass [7]>0)
THEN(can[7]*(NP_mass[ 2 0j /sus_mass[7])) ELSE
0)+(IF(Fishwt[ 8]>(.3 *Fi shwt[ 20] )) AND (sus_mass[8]>0)
THEN(can[8]*(NP_mass[20] /sus_mass[8j)) ELSE
0)+(IF(Fishwt[9]>(.3*Fishwt[20])) AND (sus_mass[9]>0)
THEN(can[9]*(NP_mass[ 2 0j / sus_mass[9])) ELSE
0)+(IF(Fishwt[lO]>( .3 *F ishwt[ 20])) AND (sus_mass [10]>0)
THEN(can[lOj*(NP_mass[2 0 j /sus_mass[lO])) ELSE
0)+(IF(Fishwt [ ll ] >( . 3 *Fishwt [20] )) AND (sus_mass[llj>O)
THEN (can [ll] *( NP_mass[ 20j /sus_mass[ llj) ) ELSE
0)+(IF(Fishwt[ 12 j > ( .3 *Fishwt [2 0 ] )) AND (sus_mass[1 2]>0)
THEN (c a n[ 12 ]*(NP_ma s s [20j /s us _ma s s [1 2] )) ELSE
0 )+ (IF(Fishwt [13 ]> ( . 3 *F ishwt [20 ] ) ) AND (s u s_ma s s [1 3]>0 )
THEN( c a n[1 3]*(NP_mas s[ 20] / s us _ma s s[ 13 ])) ELSE
0 )+ (IF (Fishwt [1 4 ]> (. 3 *Fishwt [20] ) ) AND (s u s _ma s s [1 4 ]> 0)
THEN(c a n[ 14]*(NP_mas s[20] / s us _ma s s[ 14])) ELSE
0) +(I F( Fi s hwt [15 ]>(.3*Fi s hwt [20 ] ) ) AND (sus _ma s s [1 5 ] >0 )
THEN(can [15] * (NP_mass[ 2 0 ) / sus_mass [1 5) ) ) ELSE
0)+(IF (Fishwt[ 1 6 j > (. 3 *Fishwt[ 20]») AND (sus_ma ss [1 6 j >0 )
THEN( can[16] *(NP_ma s s[ 20] /sus_mass [1 6]» ) ELSE
0)+ (IF (Fishwt[ 17 ]>( . 3 *Fi shwt[2 0j)) AND (su s_mas s [17j >O)
THEN (can [17] *( NP_mass[ 20] /sus_mass[1 7])) ELSE
0)+(IF(Fishwt[1 8 ]> (.3 *Fishwt[ 20]») AND (sus_mass[18]>O)
THEN(can[18] *(NP_ma ss[ 20] /sus_mass[1 8])) ELSE
0)+(IF(Fishwt[19]> ( .3 *Fishwt[20])) AND (sus_mass [19]>0)
THEN(can[19] *(NP_ma ss[ 20] /sus_mass[19])) ELSE 0)
Nat_mort_mass[ Coh orts] =
(Natural_Mortal ity [Coh orts ] +Na t u r a l _Mo r t a l i t y_2
[Cohorts]) /5 860
Seined [Coh or t s ] = I F (F ishwt [Cohorts]
301
0)+(IF(Fishwt[ 2j>(. 3 *Fi shwt[ 2 0j ) ) AND (s u s _ma s s [2 j>0 )
THEN(can[ 2j *(NP_mass [20 j / sus_mass[2j)) ELSE
0)+( IF(Fishwt [3 j> (. 3 *Fishwt [20 ] ) ) AND (s u s _ma s s [3 ] >0 )
THEN(can[ 3 ]* (NP_mass [20 ] /sus_mass [3 ] ) ) ELSE
0) + (IF (Fishwt[4j> ( . 3 *Fi shwt [20 j ) ) AND (sus _ma s s [4 ] >0)
THEN( can [4] *( NP_mass [20 ] /sus_mass[4 ] )) ELSE
0) +(IF (Fi s hwt [5] >(.3 *Fishwt[20]) ) AND (s us _ma s s [ 5 ] >0 )
THEN(can [5] *( NP_mass [2 0] /sus_mass[5 ]) ) ELSE
0)+(IF (Fishwt[ 6] > (. 3 *Fi shwt[ 2 0])) AND (s us _ma s s [ 6 ] >0 )
THEN(can[6]*(NP_mass [20] / sus_mass[ 6 j)) ELSE
0)+(IF(Fishwt[7]>(.3 *Fi shwt[20])) AND (sus_mass [7]>0)
THEN(can[7]*(NP_mass[ 2 0j /sus_mass[7])) ELSE
0)+(IF(Fishwt[ 8]>(.3 *Fi shwt[ 20] )) AND (sus_mass[8]>0)
THEN(can[8]*(NP_mass[20] /sus_mass[8j)) ELSE
0)+(IF(Fishwt[9]>(.3*Fishwt[20])) AND (sus_mass[9]>0)
THEN(can[9]*(NP_mass[ 2 0j / sus_mass[9])) ELSE
0)+(IF(Fishwt[lO]>( .3 *F ishwt[ 20])) AND (sus_mass [10]>0)
THEN(can[lOj*(NP_mass[2 0 j /sus_mass[lO])) ELSE
0)+(IF(Fishwt [ ll ] >( . 3 *Fishwt [20] )) AND (sus_mass[llj>O)
THEN (can [ll] *( NP_mass[ 20j /sus_mass[ llj) ) ELSE
0)+(IF(Fishwt[ 12 j > ( .3 *Fishwt [2 0 ] )) AND (sus_mass[1 2]>0)
THEN (c a n[ 12 ]*(NP_ma s s [20j /s us _ma s s [1 2] )) ELSE
0 )+ (IF(Fishwt [13 ]> ( . 3 *F ishwt [20 ] ) ) AND (s u s_ma s s [1 3]>0 )
THEN( c a n[1 3]*(NP_mas s[ 20] / s us _ma s s[ 13 ])) ELSE
0 )+ (IF (Fishwt [1 4 ]> (. 3 *Fishwt [20] ) ) AND (s u s _ma s s [1 4 ]> 0)
THEN(c a n[ 14]*(NP_mas s[20] / s us _ma s s[ 14])) ELSE
0) +(I F( Fi s hwt [15 ]>(.3*Fi s hwt [20 ] ) ) AND (sus _ma s s [1 5 ] >0 )
THEN(can [15] * (NP_mass[ 2 0 ) / sus_mass [1 5) ) ) ELSE
0)+(IF (Fishwt[ 1 6 j > (. 3 *Fishwt[ 20]») AND (sus_ma ss [1 6 j >0 )
THEN( can[16] *(NP_ma s s[ 20] /sus_mass [1 6]» ) ELSE
0)+ (IF (Fishwt[ 17 ]>( . 3 *Fi shwt[2 0j)) AND (su s_mas s [17j >O)
THEN (can [17] *( NP_mass[ 20] /sus_mass[1 7])) ELSE
0)+(IF(Fishwt[1 8 ]> (.3 *Fishwt[ 20]») AND (sus_mass[18]>O)
THEN(can[18] *(NP_ma ss[ 20] /sus_mass[1 8])) ELSE
0)+(IF(Fishwt[19]> ( .3 *Fishwt[20])) AND (sus_mass [19]>0)
THEN(can[19] *(NP_ma ss[ 20] /sus_mass[19])) ELSE 0)
Nat_mort_mass[ Coh orts] =
(Natural_Mortal ity [Coh orts ] +Na t u r a l _Mo r t a l i t y_2
[Cohorts]) /5 860
Seined [Coh or t s ] = I F (F ishwt [Cohorts]