As shown in Fig. 30.8, where RA ¼ RANDOM(0.5,0.9) and RB ¼ RANDOM
(0.3,0.7), adding randomness to the growth factors barely changes the plant community dynamics. In contrast, adding randomness to the carrying capacities brings
in a lot of fluctuation in the local stable points, and also slows down the pace of
plant community changes. This is shown in Fig. 30.9, where KA ¼ RANDOM
(80,120), and KB ¼ RANDOM(110, 130).
For some final experimentation with our model, we assume that soil communities only have a 1-year delayed effect on the plant seeds (Fig. 30.10). Adding this
delay slows down the plant community changes, and also affects the way in which
the community changes over time.
Fig. 30.2
30.1 Plant–Microbe Interaction Model
251
(0.3,0.7), adding randomness to the growth factors barely changes the plant community dynamics. In contrast, adding randomness to the carrying capacities brings
in a lot of fluctuation in the local stable points, and also slows down the pace of
plant community changes. This is shown in Fig. 30.9, where KA ¼ RANDOM
(80,120), and KB ¼ RANDOM(110, 130).
For some final experimentation with our model, we assume that soil communities only have a 1-year delayed effect on the plant seeds (Fig. 30.10). Adding this
delay slows down the plant community changes, and also affects the way in which
the community changes over time.
Fig. 30.2
30.1 Plant–Microbe Interaction Model
251