Geoscience Reference
In-Depth Information
Table 2
Effect of behavioural-based movement on size-spectra parameters and life-history traits
Behaviour
Size-spectra slope
Size-spectra intercept
Time to 1 kg (yrs)
Total
a
Inner
b
Outer
c
Total
a
Inner
b
Outer
c
0m
d
70 m
d
140 m
d
Description
C
ps
C
pa
C
dd
Control
0
0
0.1
1.039
1.037
1.220
-
-
-
1.86
2.68
5.84
Prey seeking
50
0
0.1
1.039
1.037
1.461
-
-
-
1.95
2.63
5.54
Predator avoiding
0
30
0.1
1.039
1.037
1.169
-
-
-
1.82
2.74
6.12
Both
50
30
0.1
1.039
1.037
1.285
-
-
-
1.92
2.68
5.93
Parameter sensitivities
Control
50
30
0.1
1.039
1.037
1.285
7.22
5.53
11.34
1.92
2.68
5.93
Density dependence—low
50
30
0.01
1.038
1.032
1.294
7.21
5.52
11.37
1.93
2.73
6.26
Density dependence—high
50
30
1
1.004
1.042
1.167
7.23
5.55
11.02
1.85
2.42
6.42
Prey seeking—low
5
30
0.1
1.039
1.037
1.175
7.21
5.53
11.00
1.83
2.73
6.10
Prey seeking—high
500
30
0.1
1.039
1.037
1.828
7.22
5.53
13.42
2.08
2.55
3.92
Predator avoiding—low
50
3
0.1
1.039
1.037
1.432
7.22
5.54
11.88
1.95
2.63
5.58
Predator avoiding—high
50
300
0.1
1.040
1.045
0.900
-
-
-
-
-
-
All—low
5
3
0.01
1.040
1.038
1.310
7.22
5.54
11.40
1.85
2.75
5.85
All—high
500
300
1
1.037
1.037
1.199
7.20
5.53
10.82
2.08
3.01
5.45
Entries shown in bold differ by more than 5% from control values.
a
The entire area under consideration.
b
The area within 250 m of the peak primary producer biomass.
c
The area between 250 and 500 m of the peak primary producer biomass.
d
The distance from peak biomass (metres).
