How has subsistence harvest changed over time in the Exxon Valdez oil spill region?

Image of the word subsistence, which is defined in the image caption.
A way of life that includes the harvest and use of wild resources for food, raw materials, and other traditional uses. Subsistence has been a central part of the customs and traditions of many cultural groups in Alaska for centuries. Download the report: Recovery Of A Subsistence Way Of Life (PDF) or the report summary: Study Overview – Recovery Of A Subsistence Way Of Life (PDF)

The Exxon Valdez oil spill changed the harvest and use of wild resources in Southcentral Alaska. Various anecdotal reasons such as concerns about oil contamination meant folks were hesitant to use these traditional resources.

The Council recently partnered with the Alaska Department of Fish and Game’s Division of Subsistence to study and document why and how the spill affected subsistence harvesting activities, both immediately after the spill and in the years since.

Fish and Game researchers analyzed data collected from the communities of Cordova, Chenega, Tatitlek, Port Graham, and Nanwalek from 1984 to 2014.

That data confirmed that harvesting decreased during the first few years after the spill, but numbers started recovering around two to three years after the spill. Overall, the rates increased steadily through the 1990s and into the 2000s. By 2014, however, two important facts became apparent.

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VIDEO: Study of line-throwing technology demonstrates importance of the Council’s independent research

A new study evaluating methods of establishing tow lines between an escort tug and a tanker in distress is a prime example of why the Council’s studies are vital.

Photo shows Coast Guard officer firing a messenger shot line from one Coast Guard vessel to another. This is one method of connecting tow lines between a tug and a tanker.
In this 2016 photo, a U.S. Coast Guard officer fires a messenger line from one military vessel to another. This is one method of connecting tow lines between a tug and a tanker. Photo by Pasquale Sena, U.S. Coast Guard.

The Council often hires experts to review equipment technology used in the Prince William Sound oil transportation industry. Sometimes these studies fill a hole or gap where independent research is lacking.

“Very little has been previously written on this topic,” said Alan Sorum, who managed this project and other similar technology reviews for the Council. “In a literature review it conducted, the Council’s contractor, Glosten, found that there is a general lack of published material on this subject and in particular, little guidance on best use practices or what is the most appropriate device to use for a given situation.”

Watch the new video released in 2022

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Genetic testing reveals no new marine invasive species

By Austin Love
Council Project Manager

Council testing plankton genes to supplement existing processes

The Council funds monitoring for marine species that could be introduced into Prince William Sound as a result of the operation of the Valdez Marine Terminal and associated oil tankers. If an invasive species, such as the European green crab, becomes established in Prince William Sound, they could cause serious economic and ecological harm.

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Study evaluates places of refuge

By Alan Sorum
Council Project Manager

Some locations won’t work for Prince William Sound tankers

A recent Council-sponsored study reviewed eight “potential places of refuge,” or PPOR, which are locations where an oil tanker in distress can anchor and take action to stabilize its condition. Of the eight reviewed in the study, none were found to be safe for use by tankers. However, several safe alternates were identified, analyzed, and proposed for future consideration.

Identifying these sites in advance allows decision-makers to save time during their critical initial response to a potential oil spill. Establishment of these places of refuge is recognized by the International Maritime Organization and other governmental agencies as an important marine safety and pollution mitigation measure.

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