TABLE 1. 



In E chl = 3.49+0.62 In Surf. Chi. 



In Euphotic zone = 3.46 - 0.29 In Surf. Chl. 



in primary prod. = 0.43 + 0.48 In Surf. Chl. 



The conclusion of this exercise is: 



Surface chlorophyll estimation on a continuous basis is a worth- 

 while objective^ since it is a reasonable good estimator of euphotic 

 zone chlorophyll and euphotic zone primary productivity. 



The measurement of either chlorophyll or productivity in the ocean 

 is of great ecological importance, and the point doesn't have to be dis- 

 cussed here. Let it be sufficient to say that in some circumstances 

 chlorophyll measurem.ents may help to delineate areas where certain fish 

 resources might be found (see comments by Blackburn), depending on 

 meeting certain biological restrictions . On the other hand, obtaining 

 chlorophyll information regularly over large areas of the ocean would 

 be very interesting and helpful in solving certain problems involved 

 in the study of food chain ecology. 



One other interesting feature of the statistical analysis was the 

 strong relationship between surface chlorophyll and euphotic zone depth 

 (the depth to which 17o of the surface irradiance reaches) . Apparently, 

 most of the extinction of visible light in the ocean can be related 

 to chlorophyll (contained within algae) . 



15-2 



