~
S
'--""
~
-+-J
0..
Q)
~
0
10
20
30
40
50
60
70
60
90
100
110
120
130
140
150
384
seasonal
thermocline
nitracline
Relative Fluorescence
Figure 21. Depth profile of distributions of individual prochlorophyte cell fluorescence (log scale) from the first
profile in Figure 20. Note the correspondence between changes in the distributions and water column physical
features, e.g. the increased skewness of the distribution at the depth of the seasonal thermocline and the
appearance of bimodal distributions at the depth of the nitrac1ine. From Dusenberry et al. 1990.
coincided with a shoaling of the mixed layer caused by surface heating, suggesting that
cessation of mixing allowed the cells at various depths to photoacclimate to their ambient light
levels (Dusenberry et al. 1990).
S
'--""
~
-+-J
0..
Q)
~
0
10
20
30
40
50
60
70
60
90
100
110
120
130
140
150
384
seasonal
thermocline
nitracline
Relative Fluorescence
Figure 21. Depth profile of distributions of individual prochlorophyte cell fluorescence (log scale) from the first
profile in Figure 20. Note the correspondence between changes in the distributions and water column physical
features, e.g. the increased skewness of the distribution at the depth of the seasonal thermocline and the
appearance of bimodal distributions at the depth of the nitrac1ine. From Dusenberry et al. 1990.
coincided with a shoaling of the mixed layer caused by surface heating, suggesting that
cessation of mixing allowed the cells at various depths to photoacclimate to their ambient light
levels (Dusenberry et al. 1990).