Table 5.1.
Parameters of inorganic phosphate uptake and turnover by microplankton in upper mixed layer of various kinds of water
basins measured with the use 33p_ 32
P_P04
Basin
Pi
AI
Ab
T
Comacchio lagoons, eastern coastal Adriatic a
0.02-0.1
10-20
20
3-5 min
Coastal eastern Adriatic waters
0.S-1.2
0.6-0.S
60
40
Peruvian upwelling region, coastal zone
0.2-0.4
0.3-0.5
20
25h
Same region, ocean side area
0.4-0.6
0.06-0.10
40
200h
Okhotsk Sea, shelf area of spring diatom bloom
0.4-1.4
0.1-0.2
30
170h
Same basin, central area during summer phytoplankton minimum
0.2-0.3
0.05-0.07
45
130h
Black Sea, eutrophic shelf area
0.2-0.4
0.15-0.20
60
50h
Same basin, central gyre area
0.03-0.10
0.02-0.0S
50
25h
Antarctic waters, early autumn period
1.6-2.2
0.0-0.02
20
100 days
Eastern Pacific, equatorial upwelling area
0.2-0.5
0.03-0.07
35
260h
Same basin, Cabo Nazca area
0.5-0.S
0.01-0.02
45
60 days
Central Pacific, trade wind oligotrophic region
0.05-0.15
0.002-0.004
55
SO days
a
During extremely dense bloom of picocyanobacteria.
Pi, ambient P04-P contents in water, flmoIr I
;
AI,
P04-P uptake rate, flgPt 1
h- 1
;
A b,
P04-P uptake by bacterioplankton, %
of AI;
T, P04-P
turnover time.
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