Technique of Measuring Phytoplankton Primary Production
61
Table 2.3. An example of estimation of light (Kt) and phytoplankton distribution (Kp)
coefficients and calculated Ks coefficients in the stratified basin; data are attributed to
the end of August in Lake Dalnee (Kamchatka)
Measurements K ta
Measurements Kp
Ktb
Ks
Incubation
IL
Ri
K ta
Sampling
Ri
Kp
depths (m)
depth (m)
0
100
2096
1.00
0
436
1.00
1.00
1.00
3
60
2560
1.22
3
475
1.09
1.22
1.33
8
30
1632
0.78
10
483
1.11
0.56
0.62
13
15
765
0.36
14
558
1.28
0.34
0.44
14
5
14
0.060
16
2215
5.08
0.25
1.27
30
1
25
0.012
18
4880
11.20
0.19
2.12
21
920
2.10
0.Q7
0.15
30
505
1.16
0.012
0.01
IL, illumination, % PAR; R i , radioactivity of phytoplankton measured on filters with
correction for dark 14C - uptake; K ta, the K t coefficients directly estimated from the in
situ incubations; K tb , the same coefficients obtained with the aid of the K t curve constructed after the measured K ta coefficients (see Fig. 2.10).
500
400
x
300
200
100
11
13
15
Cp/Cps
Fig. 2.16. Correlation between Cp/Cps ratios and Cps values at stations made in the
Bering Sea in summer
2.3.3.3 Conversion from Daily Rates to the Whole Basin and Annual
Primary Production
Calculations of whole-basin primary production, its average values per unit of
area, and its seasonal course are among the main aims of measurements at stations. Only these general indices give the background necessary to evaluate