62 



Pamela G. Jenkins 



{Table II cont.) 



SEASONAL VARIATIONS IN CHLOROPHYLL AND THEIR CONVERSION INTO WET 



WEIGHT OF PHYTOPLANKTON 



Water samples were taken at intermediate depths from the surface down to 50 m 

 from August to October 1952, then down to 70 m from November 1952 to August 

 1953. 



It was decided to extend sampling down to the lowest depth possible, 70 m to give 

 a more accurate survey at El, so that the chlorophyll content for 70 m was known and 



mq/m' 



Fig. I. Variation in chlorophyll from August-December 1952, at Station El. Ordinates show depth 

 of samphng in metres. Abscissae show concentration of chlorophyll in milligrams per cubic metre. 



