Numbers and population structure of the pinnipeds on the California Channel Islands
Bartholomew GA and Boolootian RA. 1960. Numbers and population structure of the pinnipeds on the California Channel Islands. Journal of Mammalogy. 41(3):366-375
Censused (by helicopter) pinniped populations of San Nicolas, Santa Barbara, Anacapa, Santa Cruz, Santa Rosa and San Miguel Islands during winter, spring and summer. Includes a table of data (island, species, date, number of males, females, and pups), and a graph showing population trends. Four species were involved: Eumetopias jubata, Zalophus californianus, Phoca vitulina, and Mirounga angustirostris.
- Type
- Journal Article
- Authors
- Bartholomew, George; Boolootian, Richard
- Units
- CHIS
- Keywords
- Aerial Surveys, Age Distribution, Animal Studies, Sea Lions & Walruses (Pinnipedia), Seals, Sex Ratio