VI-244 



(d) the effects of added s6ttl1ng agents on bottom 

 characteristics and on benthos, and the fate of oil so 

 deposited; 



(e) fractionation of oil films on exposure to 

 environmental influences, and the fate of residual 

 materials in the sea; and 



(f) the effect of oil films on the air-sea oxygen 

 exchange; and interference in processes of biological 

 productivity, such as changes in light penetration 

 and mixing. 



(2) The fluxes of synthetic organic chemicals into the 

 ocean through sewage outfalls, rivers, atmosohere and 

 biota should be determined. Priorities should be given 

 to potentially hazardous or deleterious materials such as 

 pesticides, detergents, fuel residues, certain solvents, 

 etc. 



Chemical Consequences of Man's Physical Activities 



(1) The effects of human activities (such as forestry, 

 agriculture, terrestrial and marine mining, dredging, 

 impoundments, etc.) on the flow of inorganic suspended 

 matter to the oceans and on the distribution and character 

 of the sediments should be determined. Among the potentially 

 significant effects are those on transparency of overlying 

 waters, oxygen demand from reducing sediments, transport 



