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Table 4.8 Mean-square deviations of biomasses of tropical levels of upwelling ecosystem under variations in the energetic exchange (T) and undigested food
(H)
D
i
T
−
20 %
T
−
10 %
T+10 %
T+20 %
H
−
20 %
H
−
10 %
H+10 %
H+20 %
D
2
1.7
1.2
0.6
1.9
2.4
0.7
1.9
2.6
D
3
0.3
0.2
0.3
1.0
0.5
0.5
0.9
1.3
D
4
0.5
0.4
0.6
1.3
0.9
0.4
0.6
1.5
D
P
i¼2
Z
i
0.6
0.5
0.6
1.2
0.9
0.6
1.0
1.8
D
5
1.4
0.9
0.7
1.2
0.9
0.6
1.2
1.1
D
6
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.2
D
7
0.8
0.4
0.1
0.2
0.5
0.2
0.1
0.2
D
P
i
¼
5
Z
i
1.8
1.2
1.2
1.3
1.2
0.6
1.1
1.3
n
o
1
=
2
Þ
R
200
1
Notation Z
i,exp
is the modeling result when ecosystem parameter was changed.
D
i
¼
ð
1
=
200
Z
i
/; k;
ð
z
;
40
Þ
Z
i
;
exp
/; k;
ð
z
;
40
Þ
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