Archive image from page 85 of Discovery reports (1934) Discovery reports discoveryreports08inst Year: 1934 200 ESTIMATED PHYTOPLANKTQN TOTALS MILLIONS 100- been included, as the phytoplankton was essentially similar to that found outside the South Shetlands at this time. Owing to the ice conditions this was the only station that could be worked in the Bransfield Strait on this occasion, so that the results from it are most logically considered here. Towards the southern end of this line a rich phyto- plankton was encountered, hence the working of the extra stations, Sts. 379, 380 and 381, at
Archive image from page 85 of Discovery reports (1934) Discovery reports discoveryreports08inst Year: 1934 200 ESTIMATED PHYTOPLANKTQN TOTALS MILLIONS 100- been included, as the phytoplankton was essentially similar to that found outside the South Shetlands at this time. Owing to the ice conditions this was the only station that could be worked in the Bransfield Strait on this occasion, so that the results from it are most logically considered here. Towards the southern end of this line a rich phyto- plankton was encountered, hence the working of the extra stations, Sts. 379, 380 and 381, at closer intervals. At these stations diatom nets and surface-water samples only were worked. The rich phytoplankton in the southern half of Drake Passage at this time evidently represented an autumnal increase in water of Bellings- hausen Sea origin. This increase led to a more normal disposition of the phytoplankton totals with regard to the position of the Antarctic convergence, than that seen on the previous lines (Figs. 33-5). The Antarctic phytoplankton encountered here was so much richer than that taken in the sub-Antarctic surface water to the northern end of the line, that the latter does not show up at all when the totals are plotted diagram- matically beneath the temperature curve (Fig. 36). This is so despite the fact that at these more northerly stations a distinct remnant of a Rhizosolenia plankton was present, such as was found in the fairly rich hauls Fig. 36. Diagram showing the surface near the Falkland Islands a month earlier. The relative tP-'f 'res and total Diatomales on a hne 01 stations worked across Drake proportions of the leading forms on the Drake Passage paggggg from south to north, April line will be seen from Table 14, in which their numbers, 1930. and their percentage of the total estimated catch at each station are given. From the temperatures quoted in Table XX it is evident that the convergence was crossed between Sts. 384 and 385: this is also
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