NOTE 



• NUFS FISHERIES RESEARCH 

 CENTERS 



NORTHWEST CENTER 

 SEATTLE NORTHEAST CENTER 



WOODS HOLE 



y^^ 



I HIGH INTENSITY ^<<<y>:: 

 I MODERATE INTENSITY S 

 ' LOW INTENSITY g 



MARMAP Sempling Areas 



are under intensive fishing pressure. The regulated catch of 

 yellowfin tuna in the eastern tropical Pacific is now at maximum 

 sustained yield and can be maintained only by good management; 

 this requires additional information not presently available on 

 stocks outside of the regulatory area. As a consequence, skipjack 

 tuna stocks are now being subjected to increasing fishing pressure. 

 Off the northwest and Alaskan coasts stocks of salmon, crabs, and 

 other species are subjected to increasing foreign fishing pressure. As 

 foreign vessels are displaced from the east coast, they go to other 

 fisheries. For example, in 1974 one Polish vessel is operating in the 

 northeast Pacific; six are scheduled to operate there in 1975. 



COASTAL UPWELLING 



Among the most productive fisheries in the world are those located 

 in areas of coastal upwelling. Estimates suggest that these areas 

 produce nearly 50 percent of the world's fish supply. This type of 

 upwelling occurs when winds blowing along the coast, causing the 

 surface waters of the ocean to move offshore, result in the rise of 

 cold, nutrient-rich deep water to the surface, which then nourishes 

 marine plant and animal life. The Living Resources Program of the 

 International Decade of Ocean Exploration (IDOE), supported by the 

 National Science Foundation (NSF), focuses on each aspect of the 

 upwelling process so that predictions about the extent of living 



36 



