Northern Sea Lion Distribution and Abundance: 1956-80
- 1 July 1984
- journal article
- research article
- Published by JSTOR in The Journal of Wildlife Management
- Vol. 48 (3) , 729-740
- https://doi.org/10.2307/3801420
Abstract
The present distribution and abundance of the northern sea lion (E. jubatus) was determined from surveys made between 1975 and 1980 and compared to estimates made .apprx. 20 yr earlier. The previous population estimate of 240,000-300,000 is similar to the present estimate of 245,000-290,000. Declines appear to have occurred in the eastern Aleutian Islands, Pribilof Islands, and near Kodiak Island in the Gulf of Alaska [USA]. Increases may have occurred principally in the western and central Aleutians and west of Kodiak Island. Seasonal movements and indirect and direct effects by humans are considered the likely causes for regional changes in distribution and abundance.This publication has 0 references indexed in Scilit: