PHOSPHATE, PLANKTON AND WHALE DISTRIBUTIONS 



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NOVEMBER 



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DECEMBER 



.•-JAN 



.-DEC 



...-NOV 



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JANUARY NOV -JAN COMBINED 



Fig. 156. Concentrations of Blue whales from November to January 1928-9 (from Kemp and Bennett, 1932). 



Fig. 1 57 shows the phosphate values for the South Georgia November survey of 1930. 

 Mr Hart, in the report already referred to (1934), has published the phytoplankton re- 

 sults of this survey also. The disagreement of the distribution of the phytoplankton at 

 the time of the survey with the phosphate values is not so marked as in the January- 

 February survey just discussed, but the agreement is by no means a close one. However, 

 the correlation between phosphate and/>H values, shown in Fig. 160, is very marked, and 

 again leads one to regard the phosphate values as a good guide to the phytoplankton 

 production over a little time in the past. A chart of the pH distribution is shown in 

 Fig. 158, where the area of low/>H values to the north-east of the island is seen to corre- 

 spond with the area of high phosphate values. Fig. 1 59 shows the distribution of Fin and 



