OUTFLOWS:
CONSUMPTION ¼ HERBIVORE * CONSUMP_PER_HD {Algae per Area per
Time Period}
HERBIVORE(t) ¼ HERBIVORE(t À dt) + (HERB_GROWTH_RATE À DEATH_
RATE) * dt
INIT HERBIVORE ¼ 45 {Individuals}
INFLOWS:
HERB_GROWTH_RATE ¼ HERBIVORE * FCN_HERB_GROW {Individuals
per Time Period}
OUTFLOWS:
DEATH_RATE ¼ HERBIVORE/LIFESPAN {Individuals per Time Period}
ALGAE_DELAY ¼ DELAY(ALGAE,2) {Individuals}
CONSUMP_PER_HD ¼ GRAPH(ALGAE)
(0.00, 0.00), (100, 0.25), (200, 0.6), (300, 0.83), (400, 1.06), (500, 1.24), (600, 1.41),
(700, 1.61), (800, 1.77), (900, 1.89), (1000, 1.98)
FCN_HERB_GROW ¼ GRAPH(ALGAE_DELAY)
(0.00, 0.00), (100, 0.0035), (200, 0.0075), (300, 0.019), (400, 0.065), (500, 0.13),
(600, 0.163), (700, 0.181), (800, 0.19), (900, 0.195), (1000, 0.198)
GROWTH_RATE ¼ GRAPH(ALGAE)
(0.00, 0.21), (100, 0.168), (200, 0.112), (300, 0.0902), (400, 0.0781), (500, 0.066),
(600, 0.0572), (700, 0.0462), (800, 0.0363), (900, 0.0198), (1000, 0.00)
LIFESPAN ¼ GRAPH(CONSUMP_PER_HD)
(0.00, 0.00), (0.2, 2.16), (0.4, 4.32), (0.6, 6.96), (0.8, 9.48), (1.00, 12.1), (1.20, 14.9),
(1.40, 17.3), (1.60, 20.2), (1.80, 22.6), (2.00, 23.8)
310
35 Herbivore-Algae Predator–Prey Dynamics