TABLE 2.
Phytoplankton bloom conditions during the sampling period
| Cruise dates | Week of sampling | Surface Chl a concn (mg/m3) | Subsurface Chl a
|
Dominant phytoplankton speciesa | Average bacterial abundance (105 cells ml−1)b | |
|---|---|---|---|---|---|---|
| Depth (m) | Concn (mg/m3) | |||||
| 24 and 25 February | 1 | 2.00-3.23 | NAc | NPd | Thalassiosira pacifica, Thalassiosira aestivalis | 4.82 (0.479) |
| 3 and 4 March | 2 | 15.32-30.39 | 6-8 | 7.12-19.11 | Chaetoceros debilis, Phaeocystis spp., Thalassiosira spp. | 6.06 (0.482) |
| 10 and 11 March | 3 | 4.00-13.55 | 4-8 | 9.75-21.30 | Phaeocystis spp., Thalassiosira rotula | 1.95 (0.145) |
| 22 to 26 March | 5 | 6.83-17.79 | 4-8 | 10.25-16.51 | Phaeocystis spp. | 3.41 (0.139) |
| 7 and 8 April | 7 | 3.67-6.07 | 8-11 | 16.41-25.44 | Skeletonema costatum | 7.72 (0.602) |
a
See reference 21.
b
Based on the 0.8- to 10-μm size fraction. The values in parentheses are standard deviations.
c
NA, not applicable.
d
NP, not present.