Evaluation of sea otter capture after the Exxon Valdez oil spill, Prince William Sound, Alaska

Biological Report 90(12)
By:  and 
Edited by: Keith Bayha and Jennifer Kormendy

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Abstract

After the T/V Exxon Valdez oil spill into Prince William Sound, the U.S. Fish and Wildlife Service and Exxon Company, U.S.A., began rescuing sea otters (Enhydra lutris). The primary objective of this operation was to capture live, oiled sea otters for cleaning and rehabilitation. Between 30 March and 29 May 1989, 139 live sea otters were captured in the sound and transported to rehabilitation centers in Valdez, Alaska. Within the first 15 days of capture operations, 122 (88%) otters were captured. Most sea otters were captured near Knight, Green, and Evans islands in the western sound. The primary capture method consisted of dipnetting otters out of water and off beaches. While capture rates declined over time, survival of captured otters increased as the interval from spill date to capture date increased. The relative degree of oiling observed for each otter captured declined over time. Declining capture rates led to the use of tangle nets. The evidence suggests the greatest threat to sea otters in Prince William Sound occurred within the first 3 weeks after the spill. Thus, in the future, the authors believe rescue efforts should begin as soon as possible after an oil spill in sea otter habitat. Further, preemptive capture and relocation of sea otters in Prince William Sound may have increased the number of otters that could have survived this event.

Additional publication details

Publication type Conference Paper
Publication Subtype Conference Paper
Title Evaluation of sea otter capture after the Exxon Valdez oil spill, Prince William Sound, Alaska
Series title Biological Report
Series number 90(12)
DOI 10.5962/bhl.title.45854
Year Published 1990
Language English
Publisher U.S. Fish and Wildlife Service
Publisher location Anchorage, AK
Contributing office(s) Alaska Science Center
Description 9 p.
Larger Work Type Report
Larger Work Subtype Federal Government Series
Larger Work Title Sea otter symposium: Proceedings of a symposium to evaluate the response effort on behalf of sea otters after the T/V Exxon Valdez oil spill into Prince William Sound (Biological Reports 90[12])
First page 61
Last page 69
Conference Title Sea Otter Symposium: Symposium to evaluate the response effort on behalf of sea otters after the T/V Exxon Valdez oil spill into Prince William Sound
Conference Location Anchorage, AK
Conference Date April 17-19, 1990
Country United States
State Alaska
Other Geospatial Prince William Sound