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.
♦ 2SEASONAL AND SPATIAL DIFFERENCES IN DIET IN THE WESTERN STOCK OF STELLER SEA LIONS (EUMETOPIAS JUBATUS), E. H. Sinclair and T. K. Zeppelin, Journal of Mammalogy Vol. 83, No. 4 (Nov., 2002), pp. 973-990
♦ 3Food 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
♦ 4Gibson, D. I., Bray, R. A., & Harris, E. A. (Compilers) (2005).
Host-Parasite Database of the Natural History Museum, London