Aleutian mackerel, cod fishing restricted

10 Dec 2010
Endangered Steller sea lions. (Photo: NOAA)

Endangered Steller sea lions. (Photo: NOAA)

NOAA’s Fisheries Service has issued its final interim rule to reduce commercial fishing for groundfish stocks in the Aleutian Islands in an effort to provide more food for the endangered western Steller sea lion.

The rule, which would prohibit fishing for Atka mackerel and Pacific cod, the main source of food for the animal, in an area off the western Aleutian Islands, goes into effect 1 January 2011.

Fishing for these species will be prohibited in area 543 of the Aleutian Islands subarea, at the western tip of the Aleutian archipelago. The rule also further restricts fishing in the remainder of the Aleutian Islands subarea.

These protective measures include establishing a three nautical mile buffer around a newly-established rookery, new fishing closures for Atka mackerel and Pacific cod in important Steller sea lion critical habitat foraging zones, reductions in Atka mackerel harvest amounts, and varying seasonal closures for various areas targeting Pacific cod.

Under the Endangered Species Act, NOAA’s Fisheries Service must ensure that agency actions to allow fisheries do not jeopardise the continued existence of endangered species such as the western Steller sea lion.

The final Alaska groundfish biological opinion, also issued today by NOAA’s Fisheries Service, found that continuing with the current fishing levels and practices is likely to jeopardise the continued existence of the western distinct population segment of Steller sea lions and adversely affect their critical habitat.

The western Steller sea lion is either failing to recover or is declining in the western and central Aleutian Islands sub-regions, with the most serious decline in the westernmost sub-population corresponding to fishing area 543.

The animals in the area experienced a 45% decline between 2000 and 2008, and according to NOAA scientists, one of the major factors responsible for this decline may be lack of food.

In developing the final biological opinion and the final interim rule, NOAA’s Fisheries Service took into account the proposal recommended by the North Pacific Fishery Management Council at its August meeting, as well as all public comments. The final documents incorporate some elements of the council’s proposal.

Concurrent with the regulatory actions, NOAA’s Fisheries Service continues to investigate Steller sea lion population dynamics, foraging ecology, physiology and biology, as well as effects on sea lions from killer whales, climate change, fisheries, diseases and various pollutants.

NOAA’s Fisheries Service plans to have the Center for Independent Experts review the final biological opinion in spring 2011.

The centre is a non-governmental organisation that provides independent peer review of federal agency science, including NOAA’s Fisheries Service science, to ensure scientific integrity when it is used to make policy decisions.

For more information on the western Steller sea lion and the Alaska Groundfish Biological Opinion and to comment on the final interim rule, visit http://alaskafisheries.noaa.gov.

While the western Steller sea lion population continues to struggle, NOAA is currently evaluating the status of the eastern Steller sea lion population, which lives east of 144 degree west longitude and may be recovered enough to be removed from the list of endangered and threatened wildlife.

The eastern population, which is listed as threatened under the Endangered Species Act, includes sea lions living in southeast Alaska, British Columbia, California, and Oregon.

NOAA’s Fisheries Service began its status review of the eastern Steller sea lion on 29 June to determine whether or not it should be removed from the list of threatened and endangered species (delisted), or reclassified.

On 30 August, the states of Washington and Oregon submitted a petition asking that the eastern population be delisted. The state of Alaska submitted a similar petition a day later, 1 September.

NOAA’s Fisheries Service today announced its finding on its review of those two petitions that there is now substantial information indicating the species’ recovery, and that delisting may be warranted.

NOAA’s Fisheries Service must complete the status review of the eastern Steller sea lion and issue its finding by 30 August 2011, within 12 months of receipt of the first petition.

To ensure a comprehensive review, NOAA’s Fisheries Service will have a 60-day public comment period regarding the status of the eastern Steller sea lion.

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