13.5. Questions and Tasks
281
INFLOWS:
tot_fished_mass =
f_100plus+f_25_to_100+f_5_to_25++(ARRAYSUM(f_1_to_52[*]
»+(ARRAYSUM(lt_12[*]»+(ARRAYSUM(seine_mortality[*]»
fifty_to_75 [Cohorts] = IF((Fishwt[Cohorts] /1000» = 50)
AND((Fishwt[Cohorts] /1000)<75) THEN NP_number[Cohorts]
ELSE 0
fifty_to_75_2 = ARRAYSUM(fifty_to_75[*])
five_to_ten[Cohorts] = IF((Fishwt[Cohorts] /1000» = 5)
AND((Fishwt[Cohorts] /1000)<10) THEN NP_number[Cohorts]
ELSE 0
five_to_ten_2 = ARRAYSUM(five_to_ten[*])
forty_to_fifty[Cohorts] = IF((Fishwt[Cohorts] /1000» =
40) AND((Fishwt[Cohorts] /1000)<50) THEN
NP_number[Cohorts] ELSE 0
forty_to_fifty_2 = ARRAYSUM(forty_to_fifty[*])
f_100plus2[Cohorts] = IF(Fishwt[Cohorts]> 100000)
THEN (fished_mortality[Cohorts]) ELSE 0
f_1_to_52 [Cohorts] = (IF (Fishwt [Cohorts]> = 1000) AND
(Fishwt[Cohorts]<5000) THEN (fished_mortality[Cohorts])
ELSE 0) + (IF(Fishwt[Cohorts]> = 1000) AND
(Fishwt[Cohorts]<5000) THEN (seine_mortality[Cohorts])
ELSE 0)
f_25_to_1002[Cohorts] = IF (Fishwt [Cohorts]> = 25000)
AND (Fishwt[Cohorts]<100000) THEN
(fished_mortality[Cohorts]) ELSE 0
f_5_to_252 [Cohorts] = IF(Fishwt[Cohorts]> = 5000) AND
(Fishwt[Cohorts]<25000) THEN
(fished_mortality[Cohorts]) ELSE 0
Ideal_hap_community = .8 {ideal percent of carrying
capacity of the haplochromine community}
less_than_1[Cohorts] = IF((Fishwt[Cohorts] /1000)<1)
THEN NP_number[Cohorts] ELSE 0
less_than_one_2 = ARRAYSUM(less_than_1[*])
It_12 [Cohorts] = (IF(Fishwt[Cohorts]<1000) THEN
(fished_mortality[Cohorts]) ELSE 0) +
(IF(Fishwt[Cohorts]<1000)
THEN(seine_mortality[Cohorts]) ELSE 0)
one_fifty_to_175 [Cohorts] = IF((Fishwt[Cohorts] /1000»
= 150) AND((Fishwt[Cohorts] /1000)<175) THEN
NP_number[Cohorts] ELSE 0
one_fifty_to_175_2 = ARRAYSUM(one_fifty_to_175[*])