Table 15.6. Estimated daily and yearly net biomass production and degradation rates
.....
....
Period (22 March 1989-3 July 1991) (84 sampling campaigns)
~
I
Alberoni
Sacca Sessola
S. Giuliano
>-3
::r
(I)
Total
Range
Mean
Total
Range
Mean
Total
Range
Mean
t""'
~
glm2
g/m2/day
glm2
glm2/day
glm2
glm2/day
0
0
I:l
Standing crop
0-2855
359
0-1963
1945
0-8228
1428
0
....,
Biomass
Production
16687
0-169
20
52418
0-1506
63
31237
0-566
38
<:
Loss
16388
0-240
20
54165
0-995
65
35435
0-540
43
(I)
~.
Carbon
Uptake
363
0-3.7
0.43
1139
0-32.7
1.4
679
0-12.3
0.8
(I)
Loss
356
0-5.2
0.43
1177
0-21.6
1.5
770
0-11.7
0.9
Nitrogen
Uptake
38
0-0.38
0.05
118
0-3.40
0.14
71
0-1.28
0.09
Loss
37
0-0.54
0.05
122
0-2.25
0.16
80
0-1.22
0.10
Phosphorus
Uptake
3.3 0-0.033
0.004
10.3 0-0.299
0.013
6.2 0-0.112
0.008
Loss
3.2
0-0.048
0.004
10.7 0-0.198
0.014
7.0 0-0.107
0.009
Period (1989-1990)
2 May-22 May
26 May-22 May
13 June-18 June
Alberoni
Sacca Sessola
S. Giuliano
Total
Range
Mean
Total
Range
Mean
Total
Range
Mean
glm2
glm2/day
glm2
glm2/day
glm2
glm2/day
Standing crop
0-2205
385
0-12850
1465
0-8228
1452
Biomass
Production
9047
0-168
23
16089
0-791
45
16455
0-566
45
Loss
8181
0-232
21
25480
0-781
71
15887
0-396
43
Carbon
Uptake
196
0-3.6
0.50
350
0-17.2
0.98
358
0-12.3
0.98
Loss
178
0-5.0
0.46
554
0-17.0
1.54
345
0-8.6
0.93
Nitrogen
Uptake
20
0-0.38
0.05
36
0-1.79
0.10
37
0-1.28
0.10
Loss
18
0-0.52
0.05
58
0-1.76
0.17
36
0-0.89
0.10
Phosphorus
Uptake
1.8 0-0.033
0.005
3.2 0-0.157
0.009
3.3 0-0.112
0.009
...,
Loss
1.6 0-0.046
0.004
5.0 0-0.155
0.015
3.1 0-0.078
0.009
U1
...,