Attributes / relations provided by
♦ 1Jorrit H. Poelen, James D. Simons and Chris J. Mungall. (2014).
Global Biotic Interactions: An open infrastructure to share and analyze species-interaction datasets. Ecological Informatics.
♦ 2Food Web Relationships of Northern Puget Sound and the Strait of Juan de Fuca : a Synthesis of the Available Knowledge, Charles A. Simenstad, Bruce S. Miller, Carl F. Nyblade, Kathleen Thornburgh, and Lewis J. Bledsoe, EPA-600 7-29-259 September 1979
♦ 3Seasonal and Annual Variability
in the Diet of California Sea Lions
Zalophus californianus at San Nicolas
Island, California, 1981 -86, Mark S. Lowry, Brent S. Stewart, Carolyn B. Heath, Pamela K. Yochem, John M. Francis, Fishery Bulletin. U.S. 89:331-336 (1991)