bly the result of recruitment both from the Baja 

 subpopulation and from within the California 

 Channel Island subpopulation (Chapman in press; 

 Gogan footnote 2). 



Although the Channel Islands subpopulation as 

 a whole may continue to grow, it is likely that 

 future Sf values will eventually follow the de- 

 creasing trend towards stability which was de- 

 scribed above for Ir values (Fowler footnote 4). 



Other California Channel Islands 



Breeding colonies were not observed on any of 

 the remaining Channel Islands during the 1972 

 censuses. The small numbers of animals seen on 

 San Clemente Island included no pups, although 

 there is a more recent indication that breeding/ 

 pupping sometimes occurs there. A single female 

 with a pup was observed on San Clemente Island 

 in January 1977 (Le Boeuf and Mate 1978). How- 

 ever, no pups were observed there during the 1978 

 breeding season surveys from land by Cohen. ^ 



Anacapa Island may not offer suitable habitat 

 for elephant seals because of its high cliffs and 

 rocky coastline. The beaches on San Clemente Is- 

 land are near a naval shore bombardment range 

 and frequent bombing may have prevented the 

 animals from establishing a breeding colony 

 there. However, reasons for the absence of 

 elephant seals on Santa Cruz, Santa Rosa, and 

 Catalina Islands, all of which have some beaches 

 which appear suitable, are not known, although 

 human disturbance may be an important factor 

 (Kenyon^). 



Acknowledgments 



The 1972 photo coverage was provided by the 

 U.S. Naval Missile Center, Point Mugu, Calif. R. 

 L. DeLong, C. H. Fiscus, C. W. Fowler, R. H. 

 Lander, and A. E. York of the National Marine 

 Mammal Laboratory, B. J. Le Boeuf and M. L. 

 Bonnell of the University of California, and B. S. 

 Stewart of Hubbs-Sea World Research Institute 

 reviewed the manuscript. 



^Robert H. Cohen, Naval Ocean Systems Center, San Diego, 

 CA 92152, pers. commun. March 1978. 



*Kenyon, K. W. 1973. Human disturbance of marine birds 

 and marine mammals in wilderness areas of Baja California, 

 Mexico, 10-17 February 1973. Unpubl. manuscr, 16 p. U.S. Dep. 

 Inter, Bur Sport Fish. Wildl,. Div. Wildl. Res., Mar. Mammal 

 Substation, Seattle, Wash. (Available Natl. Mar Mammal Lab., 

 Natl. Mar Fish. Serv., NOAA, 7600 Sand Point Way NE., Seattle, 

 WA 98115.) 



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