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4000
A
N
3000
m
N
m
N
N
2000
m
N
m
N
m
N
m
1000
N
m
N
m
N
n
m
n
N
n
m
n
m
n
N
n
n
m
n
n
N
n
m
n
n
m
n
o
N
n
o
o
N
m
n
o
o
o
o
o
0
o
o
o
o
o
oo
0
5
10
15
1.0
NN
mm
m
oo
o
nn
n
o
m
m
N
o
m
m
n
m
m
m
m
m
0.9
n
o
m
m
m
N
n
n
N
o
n
n
n
N
n
n
n
n
n
N
N
N
N
N
N
N
N
N
o
0.8
o
0.7
o
0.6
0.5
o
0.4
o
0.3
0.2
o
B
0.1
o
o
0.0
0
5
10
15
GENERATION
Fig. 12.13
Population growth (A) and observed heterozygosity (B) for four annual bisexual
self-incompatible populations with 172 founders subdivided into four squares of 43 each,
each square offset from the center by 20 grid units in the direction of one of the corners. The
populations have identical NEWGARDEN input specifi cations except as follows. In population
N, offspring and microgamete maximum dispersal distances both = 5 grid units. Populations m,
n, and o have only one maximum distance for microgamete dispersal = 5 grid units. However,
offspring are dispersed to four different zones with the following probabilities:
Population
Zone 1 (0-5 units)
Zone 2 (6-12)
Zone 3 (13-21)
Zone 4 (22-300)
m
45%
30%
20%
5%
n
45%
30%
10%
15%
o
25%
25%
25%
25%
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