SHORELINE OIL FROM EXXON VALDEZ: CHANGE FROM 1991 TO 19931

1995 ◽  
Vol 1995 (1) ◽  
pp. 972-973
Author(s):  
James C. Gibeaut ◽  
Ernest Piper

ABSTRACT During summer of 1993, the Alaska Department of Environmental Conservation surveyed 45 sites in Prince William Sound that were oiled by the March 1989 Exxon Valdez oil spill. The data describe the oil's visual properties and extent. Comparisons provide estimates of oil reduction since 1991. From 1991 to 1993, an estimated 50 percent reduction in the amount of asphalt, surface oil residue, and mousse was largely caused by manual removal and raking. Subsurface oil reduced by about 65 percent. Sites mechanically tilled or from which oiled sediment was removed improved the most, but natural reduction was still greater than 50 percent.

1991 ◽  
Vol 1991 (1) ◽  
pp. 321-323
Author(s):  
Randolph Bayliss ◽  
John H. Janssen ◽  
Albert Kegler ◽  
Marshal Kendziorek ◽  
Daniel Lawn ◽  
...  

ABSTRACT The first weeks of the Exxon Valdez oil spill were critical to the defense of state resources. The Alaska Department of Environmental Conservation (ADEC) implemented the state spill response plan upon notification in the early hours of March 24, 1989. A local ADEC representative boarded the vessel within three and one-half hours of grounding. Experienced ADEC spill response staff, other state agencies, and two cleanup contract firms were notified that morning and were arriving through the first day. The Governor of Alaska and the Commissioner of ADEC surveyed the wreck that same day. Within 33 hours, ADEC had 30 persons on site. The state notification procedure and plan functioned effectively. Key roles undertaken initially by the state were aerial and computer spill tracking; liaison with fishing groups and local villages; and protection of sensitive habitats, especially salmon hatcheries. Notably, ADEC worked with the Cordova District Fishermen United (CDFU) to defend a critical salmon hatchery directly in the path of the spreading oil. Using the Alaska Air National Guard, two Alaska state ferries, and fishing boats, CDFU volunteers, local Chenega villagers, ADEC staff, and contractors used miles of boom to defend the hatchery. The hatchery was spared from oiling just as millions of salmon fry were released.


The Condor ◽  
2000 ◽  
Vol 102 (4) ◽  
pp. 723-737 ◽  
Author(s):  
David B. Irons ◽  
Steven J. Kendall ◽  
Wallace P. Erickson ◽  
Lyman L. McDonald ◽  
Brian K. Lance

Abstract We compared post Exxon Valdez oil-spill densities of marine birds in Prince William Sound from 1989–1991, 1993, 1996, and 1998 to pre-spill densities from 1984–1985. Post-spill densities of several species of marine birds were lower than expected in the oiled area of Prince William Sound when compared to densities in the unoiled area. These negative effects continued through 1998 for five taxa: cormorants, goldeneyes, mergansers, Pigeon Guillemot (Cepphus columba), and murres. Black Oystercatchers (Haematopus bachmani) and Harlequin Ducks (Histrionicus histrionicus) exhibited negative effects in 1990 and 1991. Loons showed a weak negative effect in 1993. Black-legged Kittiwakes (Rissa tridactyla) showed relative decreases in 1989, 1996, and 1998 which may have been caused by shifts in foraging distribution rather than declines in populations. Glaucous-winged Gulls (Larus glaucescens) showed positive effects in most post-spill years. Murrelets and terns showed relative increases in 1993, 1996, and 1998. Generally, taxa that dive for their food were negatively affected, whereas taxa that feed at the surface were not. Effects for some taxa were dependent upon the spatial scale at which they were analyzed. Movements of birds and the mosaic pattern of oiling reduced our ability to detect oil-spill effects, therefore our results may be conservative. Several marine bird species were negatively affected at the population level and have not recovered to pre-spill levels nine years after the oil spill. The reason for lack of recovery may be related to persistent oil remaining in the environment and reduced forage fish abundance.


1995 ◽  
Vol 10 (1-2) ◽  
pp. 137-156 ◽  
Author(s):  
Douglas A. Wolfe ◽  
K. John Scott ◽  
John R. Clayton ◽  
John Lunz ◽  
James R. Payne ◽  
...  

1991 ◽  
Vol 1991 (1) ◽  
pp. 229-233
Author(s):  
Marjorie J. Gibson

ABSTRACT Despite initial concerns about the impact of the Exxon Valdez oil spill on bald eagles in Prince William Sound, accumulating evidence indicates that the area's eagle population is doing well. This paper presents and discusses the 1989 data collected during the Prince William Sound and Kodiak Island Eagle Capture and Short-term Rehabilitation Programs, as well as 1990 data from the U.S. Fish and Wildlife Service's operational field surveys.


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