. Fig. 65. Phytoplankton distribution (totals per loo-o m. haul) in Bransfield Strait, December 1930. I = one million. confined to the three Weddell Sea stations, as the tables clearly show. Fig. 66 shows the distribution of the dominant species Corethron valdkme. It will be seen that it reached its maximum to the north-east at Sts. 538 and 539, suggesting that the eastward move- ment of the phytoplankton association regenerated in the old Bellingshausen Sea water within the strait, observed during the spring of the previous season, had on this occasion advanced still farther. This view is str
. Fig. 65. Phytoplankton distribution (totals per loo-o m. haul) in Bransfield Strait, December 1930. I = one million. confined to the three Weddell Sea stations, as the tables clearly show. Fig. 66 shows the distribution of the dominant species Corethron valdkme. It will be seen that it reached its maximum to the north-east at Sts. 538 and 539, suggesting that the eastward move- ment of the phytoplankton association regenerated in the old Bellingshausen Sea water within the strait, observed during the spring of the previous season, had on this occasion advanced still farther. This view is strongly upheld by the distribution of Rhizosolenia gracilUma (Fig. 67), whose maximum development here coincided with the Corethron maximum. As we have previously tried to show, this form is apparently regenerated in moderate abundance in the old Bellingshausen Sea surface water in the spring (see p. 121). Comparison of Fig. 65, where the phytoplankton totals are given, with Fig. 66, showing the distribution of Corethron, also shows the relatively small proportion of that nviir ^7
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