Barkley, R.A., W.H. Neill, and R.M. Gooding. 1978. 



Skipjack tuna, Katsuwonus pelamis , habitat based 



on temperature and oxygen requirements. Fish. 

 Bull., U.S. 76:653-662. 



Defined and mapped the habitat of skipjack in 

 the Pacific using averaged oceanog raphi c 

 data. Habitat features used were based on 

 experiments on Hawaiian skipjack. The verti- 

 cal and areal habitat were described by 

 limits of temperature and oxygen. Habitat 

 varied with size/age of fish. 



KEY WORDS: tuna, skipjack, habitat, distribu- 

 tion, depth, oceanography, temperature, oxy- 

 gen . 



Beardsley, G.L., Jr. 1969. Distribution and apparent 

 relative abundance of yellowfin tuna ( Thunnus 

 albacares ) in the eastern tropical Atlantic In 

 relation to oceanographic features. Bull. Mar. 

 Sci. 19:48-56. 



Yellowfin tuna caught by Japanese longline 

 were noted to be distributed around and down- 

 stream from thermal domes. The proposed 

 reasoning was that upwelling and enrichment 

 processes are associated with the domes. 

 Frontal zones noted to concentrate yellowfin 

 at the surface apparently had little effect 

 on the distribution of fish taken by long- 

 line . 



KEY WORDS: tuna, yellowfin, thermal domes, 

 upwelling, enrichment. 



Berlage, H.P. 1966. The Southern Oscillation and world 

 weather. K. Ned. Meterol. Inst. Meded in Verh. 88, 



152 p, 



Described mechanisms of atmospheric pressure 

 differences influencing the strength of Peru 

 and Equatorial Current systems, and an impact 

 on sea surface temperatures. Stated that the 

 strength of the Peru Current depends on the 

 pressure difference between Easter Island and 

 Santiago . 



KEY WORDS: atmospheric pressure, tempera- 

 ture, currents. 



