ECOLOGY AND BIOLOGY OF THE PACIFIC WALRUS 



265 



enough answers are obtained to describe its basic size, structure, and demo- 

 graphic characteristics, the Pacific walrus population should be capable of 

 providing a large, sustained harvest, without risk of repeating the mistakes of the 

 past or neglecting the needs of the future. 



Acknowledgments 



The material in this report was gathered over 28 years, beginning in 1952, and 

 the study received support from many sources during that period. In the 1950's, 

 my work was aided mainly by funds made available through contractual 

 arrangements between the U.S. Office of Naval Research and the Arctic Institute 

 of North America under contract Nonr 1138(01). In the 1960's, it was supported 

 principally in connection with the Animal-Borne Disease Program of the Arctic 

 Health Research Center, Public Health Service, U.S. Department of Health, 

 Education, and Welfare and by funds made available to that program through 

 interagency agreement with the Bureau of Sport Fisheries and Wildlife, U.S. 

 Fish and Wildlife Service. In the 1970's, it was aided in part by the University of 

 Alaska Sea Grant Program, supported by NOAA Office of Sea Grant, U.S. 

 Department of Commerce, under contracts GH-83, 1-36109, and 04-3-158-41; 

 in part by the Bureau of Land Management through interagency agreement with 

 the NOAA Environmental Research Laboratories, Office of Alaskan Outer 

 Continental Shelf Environmental Assessment Program; in part by the U.S. 

 Marine Mammal Commission, under contracts MM4AC-006, MM5AC-024, 

 and MM 1533576-0; and in part by the State of Alaska with research funds made 

 available through the Institute of Marine Science, University of Alaska. At 

 various times, logistic support was provided by the U.S. Coast Guard, the U.S. 

 Air Force, the U.S. Department of Interior's Bureau of Commercial Fisheries, 

 Bureau of Sport Fisheries and Wildlife, and Bureau of Indian Affairs, the 

 National Science Foundation's R/V Alpha Helix program, the Soviet Ministry of 

 Fisheries through the Marine Mammal Project, US-USSR Environmental Pro- 

 tection Agreement, the New York Zoological Society, the Alaska Packers 

 Association, and by the Eskimos of St. Lawrence Island, Bering Sea. 



A large number of people contributed their time and special knowledge during 

 the course of this work. For providing the initial inspiration and direction, I am 

 particularly indebted to I. McTaggart Cowan of the University of British 

 Columbia, V.B. Scheffer of the Bureau of Commercial Fisheries, and R. F. Scott 

 and J. P. Kelsall who were my fellow students at the University of British Colum- 

 bia. For many years subsequent to that, I was encouraged and aided by those 

 people and especially by K. W. Kenyon of the Bureau of Sport Fisheries and 

 Wildlife, R. L. Rausch of the Arctic Health Research Center, J. J. Burns of the 

 Alaska Department of Fish and Game, and my wife, B. A. Fay. 



Among the many others who contributed information, services, and other 

 forms of assistance were D. P. Abbott, M. Arnow, E. D. Asper, C. A. Barnes, 

 F. M. Bayer, R. Baxter, M. A. Beal, B. J. Benchley, W. Benton, D. A. 

 Borchert, H. W. Braham, J. G. Bridgens, J. W. Brooks, D. H. Brown, J. L. 

 Buckley, lU. A. Bukhtiarov, T. J. Cade, W. W. Caldwell, W. M. Cameron, 

 W. Carroll, T. D. Carter, F. A. Chace, Jr., J. Clarke, V. N. Crosby, J. M. 

 Cuthill, H. DeVoe, R. A. Dieterich, J. P. Dittmer, M. J. Dunbar, J. A. Estes, J. 



