200
400
600
800 1000
0.30
0.25
0.20
0.15
0.10
0.05
t
200
400
600
800
1000
0.10
0.50
0.40
0.30
0.20
10
y
x
0 2
4 6 8
0
2
4
6
8
10
x
0 2
4 6 8
10
x
0 2
4 6 8
10
x
0 2
4 6 8
10
y
0
2
4
6
8
10
y
0
2
4
6
8
10
y
0
2
4
6
8
10
y
x
0 2
4 6 8
0
2
4
6
8
10
y
x
0 2
4 6 8
0
2
4
6
8
10
y
x
0 2
4 6 8
0
2
4
6
8
10
y
x
0 2
4 6 8
0
2
4
6
8
10
N
10
10
10
10
A1)
A2)
B1)
B2)
C1)
C2)
t
N
Fig. 8
The same as in Fig. 7, but for
five species that, in addition to cyclic allelochemical suppressions, have a suppressor-suppressed relationship with each of
its two next nearest neighboring species (A1). In (C1) and (C2) the extinction of two and one species occurs. The data refers to response functions dependent on
the total local concentration of allelochemicals
482
S. A. Carvalho and M. L. Martins