MERRICK ET AL.: DECLINE OF NORTHERN SEA LION 



Table 3. — Counts of northern sea lion pups at sites in the Aleutian Islands and Gulf of Alaska, 1978-86. 



'Calkins and Pitcher (text fn. 5), except for Seguam and Bogoslof Islands, wfiich are from Fiscus et al. (1981). 

 ^This study and Loughlin et al. (text fn. 7). 



Table 4. — Counts of adult and juvenile northern sea lions at Ugamak Island, 



AK, mid-June 1969-86\ 



'Excludes three sites not counted in all four years. Last day of counting in 1969 was 

 20 June, so this table is designed to provide comparable data from other years only, and 

 will not match the maximal count for the year. Sites are identified using scheme developed 

 by Fiscus (text fn. 12). 



2From Fiscus (text fn. 12). 



'From land counts, except counts from 28 June 1977, which were taken from aerial 

 photographs (Withrow (text fn. 10)). 



<This study. 



Island has not declined equally at all sites (Table 4). 

 Numbers on the south side of the island at Ugamak 

 Bay declined until 1977, and then changed very little 

 through 1985. However, in 1986 one south side site 



(A4) was abandoned by breeding females, whereas 

 it had been occupied by over 400 in the previous 

 year. Numbers at north side sites have declined 

 through the present, with most sites there now 



357 



