NOTE Yang: Diet changes of Gadus macrocephalus associated with climate changes in Pavlof Bay 



405 



80 



Figure 6 



Pandalid shrimp consumed by Pacific cod sampled at different bottom depths (m) in 

 Pavlof Bay in 1995, and in the Gulf of Alaska in 1990, 1993, and 1996. 



hermit crabs, Tanner crabs, and eelpouts) were the domi- 

 nant food in 1995. This change was probably due to the 

 climate shift from cold to warm in the Gulf of Alaska. 



Acknowledgments 



I would like to thank Paul Anderson, Troy Buckley, and 

 Patricia Livingston for reviewing the manuscript and for 

 their very helpful suggestions. I also want to thank the two 

 anonymous reviewers for their comments and suggestions. 



Literature cited 



Albers W. D., and P. J. Anderson. 



1985. Diet of the Pacific cod. Gadus macrocephalus. and 

 predation on the northern pink shrimp, Pandalus borealis, 

 in Pavlof Bay, Alaska. Fish. Bull. 83:601-610. 

 Anderson, P. J . 



2000. Pandalid shrimp as indicators of ecosystem regime 

 shift. J. Northw. Atl. Fish. Sci. 27:1-10. 



Anderson, P. J„ and J. F. Piatt. 



1999. Community reorganization in the Gulf of Alaska fol- 

 lowing ocean climate regime shift. Mar. Ecol. Prog. Ser. 

 189:117-123. 



Berenboim, B. I., A. V. Dolgov, V. A. Korzhev, and N. A. Yaragina. 



2000. The impact of cod on the dynamics of Barents Sea 

 shrimp (Pandalus borealis) as determined by multispecies 

 models. J. Northw. Atl. Fish. Sci. 27:69-75. 



Hunter, M. A. 



1979. Food resource partitioning among demersal fishes 

 in the vicinity of Kodiak Island, Alaska. M.S. thesis, 120 

 p. Univ. Washington, Seattle, WA. 

 Jewett, S. C. 



1978. Summer food of the Pacific cod, Gadus macrocepha- 

 lus, near Kodiak Island, Alaska. Fish. Bull. 76:700-706. 

 Lilly, G. R., D. G. Parsons, and D. W. Kulka. 



2000. Was the increase in shrimp biomass on the North- 

 east Newfoundland shelf a consequence of a release in 

 predation pressure from cod? J. Northw. Atl. Fish. Sci. 

 27:45-61. 

 Yang, M-S., and M. W. Nelson. 



2000. Food habits of the commercially important ground- 

 fishes in the Gulf of Alaska in 1990, 1993, and 1996. 

 NOAA Tech. Memo. NMFS-AFSC-112, 174 p. 



