10.5. Qu estions and Tasks
209
OUTFLOWS :
DIE_N_JUV_IMM = (1 -
INST_SURV_N_JUVENILE) *N_JUV_IMMIGRANTS/DT
MATURE_N_JUV_IMM =
N_JUV_IMMIGRANTS * INS T_S URV_ N_JUVENI LE* (1 / N_JUVENILE_STA
GE_DURATION)
N_ MATURE_ I MMI GRANT_ADULTS( t) =
N_MATURE_IMMIGRANT_ADULTS (t-dt) + (MATURE_N_ J UV_ I MMDIE_N_ADULT_2-N_ LIFESPAN_2) * dt
I NIT N_MATURE_IMMIGRANT_ADULTS = 0
INFLOWS:
MATURE_N_JUV IMM =
N_JUV_IMMIGRANTS*INST_SURV_N_JUVENILE*(1 /N_JUVENILE_STA
GE_DURATION)
OUTFLOWS :
DIE_N_ADULT_2 = LAG N ADT_2*N_ADULT_SURVIVORSHIP
N_LIFESPAN_2 = N_ADULT_SURVIVORSHIP*LAG_N_ADT_2
INST_SURV_N_JUVENILE =
EXP(LOGN(N_JUVENILE_SURVIVORSHI P) * (1 /N_JUVENILE_STAGE_D
URATION) *DT)
LAG_N_ADT_2 =
DELAY (N_MATURE_IMMIGRANT_ADULTS, N_ ADULT_ STAGE_ DURATI ON)
N_ J UV_ ADVECTIO N = 0
SIZE_FACTOR = . 1
Nephthys Popula t i on Modu le
NEPHTYS_ADULT =
N_ADULT_IMMIGRANTS+N_ADULTS+N_MATURE IMMIGRANT ADULTS
NEPHTYS_JUV = N_JUVENI LES+N_ J UV_ I MMI GRANTS
TOTAL_NEPHTYS = NEPHTYS_ADULT+NEPHTYS_JUV
Nephtys Life-Stages Module
N_ADULTS(t) = N_ADULTS( t -dt) + (MATURE_N_JUVDIE_N_ADULT-N_LIFESPAN) * dt
INIT N_ADULTS = 0
INFLOWS :
MATURE_N_JUV = LAG N JUV *N JUVENILE SURVIVORSHIP
OUTFLOWS:
DIE_N_ADULT = (1-N_ ADULT_SURVIVORSHIP) *LAG_N_ADT/DT
N_LI FESPAN = LAG_N_ ADT*N_ADULT_ SURVIV ORSHI P