Some observations of the hydrology and plankton of the North Sea and English Channel

Abstract

Phosphate, salinity and temperature records of waters of the North Sea and English Channel have been compared for April or May in the years 1935, 1936 and 1937, and the plankton distribution has been noted. Attention is called to the appearance of stability in certain features.Thus, a high phosphate content was found to be associated with extremes of salinity and temperature, in similar areas in each year. The phosphate appears to be brought into the North Sea and Channel by oceanic water and by drainage from the land.The plankton organisms were also similarly distributed in each year.