Database Reference
In-Depth Information
NYMPH FED(t)
=
NYMPH FED(t
−
dt)
+
(N FEED
−
N MOLT -
NYMPH FED DEATH) * dt
INIT NYMPH FED
=
0
TRANSIT TIME
=
26
INFLOW LIMIT
= ∞
CAPACITY
= ∞
INFLOWS:
N FEED
= WEEKLY NYMPH TICK BURDEN)
THEN WEEKLY NYMPH TICK BURDEN ELSE (NYMPHS ACTIVE)
OUTFLOWS:
N MOLT
=
IF (NYMPHS ACTIVE
>
CONVEYOR OUTFLOW
NYMPH FED DEATH
=
=
LEAKAGE OUTFLOW
LEAKAGE FRACTION
=
(1-NYMPH SURVIVAL RATE)
NO-LEAK ZONE
=
0
TOTAL ACTIVE NYMPHS YEAR(t)
=
TOTAL ACTIVE NYMPHS YEAR(t
−
dt)
+
(TOTAL ACTIVE NYMPHS IN
TOTAL ACTIVE NYMPHS OUT) * dt
INIT TOTAL ACTIVE NYMPHS YEAR
−
=
0
INFLOWS:
TOTAL ACTIVE NYMPHS IN
=
LARVAE MOLT
OUTFLOWS:
TOTAL ACTIVE NYMPHS OUT
=
IF LARVAE MOLT
=
0 THEN
TOTAL ACTIVE NYMPHS YEAR ELSE 0
ADULT FEMALE POPULATION RATIO
=
0.5
ADULT SURVIVAL RATE
.92
EGG ENVIRONMENTAL FACTOR
=
=
(SIN(2*PI/52*TIME))*1.632
EGG ENVIRONMENTAL FACTOR 2
=
IF (EGG ENVIRONMENTAL FACTOR
<
0) THEN 0 ELSE
EGG ENVIRONMENTAL FACTOR
EGG FECUNDITY
=
1
EGG MAX
=
3000
{
Max number of eggs per oviposition
}
EGG SURVIVAL
.0336
LARVAE SURV RATE
=
.37
NYMPH SURVIVAL RATE
=
=
.92
Tick Population Dynamics 2
AADULT FED 2(t)
=
AADULT FED 2(t
−
dt)
+
(ADULT FEED 2
−
ADULT REST RATE 2) * dt
INIT AADULT FED 2
=
0
INFLOWS:
ADULT FEED 2
=
IF (WEEKLY ADULT TICK BURDEN DEER
=ADULT UNFED 2)
THEN WEEKLY ADULT TICK BURDEN DEER ELSE
(ADULT UNFED 2)
>
