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Information Storage and Neural Control 



PHOTOSYNTHESIS 

 ( gcol cm-^doy-' ) 



DEPTH 

 (ft) 



RESPIRATION 

 ( jcQl cm-*do>-' ) 



Fig. 6. Mean photosynthesis and mean respiration in the water column. 



Mean photosynthesis and respiration are depicted in Figure 6. 

 As expected, production was highest near the surface and atten- 

 uated in exponential fashion with depth. Respiration was about 

 equal throughout the upper ten feet, but was only half as great 

 below this level. 



MEAN ASH-FREE SOLIDS ("BIOMASS") 

 ( mg cm-2 ) 



DEPTH ,0- 

 (ft) 



MEAN TOTAL CHLOROPHYLL 

 ( ug cm-2 J 



Fig. 7. Mean ash-free solids and mean total chlorophyll concentration at various 



depths. 



