Geoscience Reference
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Table 1 Definitions of model variables and parameters
Symbol
Definition
Unit
Value
Reference
M
In (mass)
-
14 to 14
T
Time
yr
0-100
X
Spatia1 co-ordinates
m
0-1000
Q
In (predator-prey mass ratio)
-
-
'
(q)
Predator-prey mass preference function
-
-
m 3
n(m, t, x )
Mass density
-
yr 1
g(m, t, x )
Per capita growth rate
-
yr 1
m (m, t, x )
Per capita mortality rate
-
m 2 yr 1
J(m, t, x )
Spatial flux
-
m yr 1
v(t, x )
Abiotic velocity
-
K
Growth efficiency
-
0.2
Ware (1978)
m 3 yr 1
A
Volume searched per unit mass
640
Ware (1978)
a
Allometric exponent for search rate
-
0.82
Ware (1978)
b
Allometric exponent for intrinsic mortality rate
-
0.25
Brown et al. (2004)
q o
Preferred predator-prey mass ratio
-
ln(100)
Daan (1973), Cohen et al. (1993)
2
s
Predator-prey mass ratio variance
-
ln(100)/3
Andersen and Ursin (1977)
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