Results of U.S. - U.S.S.R. Joint Marine Mammal Research Cruise in the Kuril and Aleutian Islands, 6 June-24 July 1989

摘要

As part of the U.S.-U.S.S.R. Agreement on Cooperation in the Field of Environmental Protection, U.S. and Soviet biologists conducted surveys for northern sea lions (Eumetopias jubatus) and other species of marine mammals and birds in the Kuril and Aleutian Islands from 6 June to 24 July 1989. The surveys indicated that previously established declines in sea lion abundance have continued in both areas. Twelve of the Kuril Islands were surveyed for northern sea lions and 3,215 adults and juveniles and 1,479 pups were seen on land. In addition, 692 seals (Phoca vitulina, 16 pups), and 78 spotted seals (Phoca largha) were seen. Surveys in the Aleutian Islands at Kiska, Seguam, and Bogoslof Islands found 3,467 adult and juvenile sea lions and 1,497 pups. Also seen were 130 harbor seals (13 pups), 442 otters (89 pups), and 719 northern fur seals (99 pups).