They may also affect recruitment and distribu- 

 tion of fishery resources, particularly where the 

 anomaly is of longer term or recurs in successive 

 years. 



In view of these possibilities it is hoped that 

 biologists will find the indices presented here to 

 be convenient and suitable for incorporation into 

 studies of the dynamics of biological distributions, 

 and that empirical associations may lead to eco- 

 logical hypotheses and finally to experiments 

 which can verify both the hypotheses and the 

 indices presented in this report. Finally, although 

 this work was directed primarily toward develop- 

 ing a tool for biological and fisheries research, it 

 is suggested that these indices may find appli- 

 cations in such fields as coastal oceanography, 

 fog research, and studies of climate and weather 

 of coastal regions. 



ACKNOWLEDGMENTS 



Invaluable discussion and advice was provided 

 by James H. Johnson, Gunter R. Seckel, and 

 Douglas R. McLain of the Pacific Environmental 

 Group, National Marine Fisheries Service, 

 NOAA, throughout this project, from its con- 

 ception through the completion of the manu- 

 script. 



Atmospheric pressure data and electronic com- 

 puting and plotting facilities were provided by 

 the U.S. Navy, Fleet Numerical Weather Cen- 

 tral. 



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