"Those favoring the removal say the sea lions are damaging salmon runs listed under the Endangered Species Act and protected at great expense.The states estimate the sea lions eat up to about 4 percent of the spring chinook run as it schools at the base of the Bonneville Dam to pass through fish ladders en route to upriver spawning grounds.
The Humane Society contends the animals are only a small, although visible, pressure on the health of the runs and that the required "significant negative impact" hasn't been established."
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Sea Lions Kill Salmon, Government Kills Sea Lions
Posted on: April 2, 2008 8:37 AM, by Kevin Zelnio
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Comments
Adele of The Sitting Fox blog linked[1] to a similar plan to kill wolves and reduce their number so humans can replace their place as hunters[2].
Humans, a monoculture of higher predators?
[1] http://my.opera.com/SittingFox/blog/2008/03/09/party-in-the-garden
[2] http://www.canada.com/calgaryherald/news/story.html?id=8607f3bb-eb70-4210-9dab-ffdcf0cb58dc&k=211
Posted by: Kiki | April 2, 2008 1:08 PM
Of course, they wouldn't need to school at the base of the dam -- and hence be an attractive, easy food supply for the sea lions -- if the dam didn't exist in the first place. Just another perspective on the issue from someone who's never dealt with dams or their effects.
Perhaps the larger issue is the "rock, paper, scissors" question of whether the ESA beats the MMPA, since both of them evidently beat the Sustainable Fisheries Act.
Posted by: FishGuyDave | April 2, 2008 6:18 PM
Good point dave. How is the legislation hierarchy determined? Anyone know?
And about dams... yeah I'm going have to ask you to move your dam to the basement, if you could just pick your stuff and move down now that'd be great.. mmm yeah thanks. Sorry, there is an Office Space quip for everything. But seriously, people need power right? What's a politician to do?
Also, sea lions eat "4% of the spring chinook run". Is that enough to be concerned about?? 4% is awfully low to me, can't they just eat it? Are we going to shoot bears for taking 1% of the salmon run in the forests?
Posted by: kevin z | April 2, 2008 10:31 PM
As one who used to do ESA work in the PNW, I'll try to clear up a few things:
1) The legislation isn't in a heirarchy, and there is considerable litlgation all the time over which law is "right." In the case of Salmon, the Chinook in question are an ESA listed run, being eaten by an MMPA protected pinniped. Because these are listed fish, the SFA, and Magnuson-Stevens don't apply - you can't harvest listed chinook in the Columbia or anywhere else.
2) That 4% decline caused by one source (the sea lions) is just part of the equation. Long before the buffet gets set up, the chinook have losses as they migrate downstream as juveniles (some due to dams, some due to other habitat losses, some due to being small fish being eaten by other larger fish). Then you have a certain % of the fish that die at sea for a variety of reasons, and other adults that, migrating in, don't even live to get to the dam in question. So yes, 4% makes a huge difference.
3)Yes, if the dams didn't exist the sea lions wouldn't have any place to congregate. I still have a bumpersticker from my Seattle days calling for their removal. But hydro power hase been the engine allowing the economies of places like Portland and Seattle to grow, so I don't think the political will is there to take them down. And NMFS, the federal agency charged with sorting this all out, has been HEAVILY litigated in federal district court in Portland for trying to develop a salmon recovery strategy that acknowledges the mostly permanent status of the dams.
4). Finally, consider that the sea lions have been reported to be both repeat visitors (i.e. same sea lions each year), and teaching tehir young to come here an dfish. That means they will be eating listed salmon for a long time if something isn't done. Unlike the salmon, Californai Sea lions aren't endangered or threatened - they have MMPA protection, but only because they are marine mammals.
Posted by: Philip H. | April 4, 2008 6:16 AM
The San Francisco Chronicle has an Op Ed a few weeks ago that described how seals and other pinnipeds were blamed for destroying the salmon runs in 1886:
Then as today, the pinniped blamers ignored the role of humans in the decimation of the salmon runs...Posted by: Marc | April 5, 2008 9:21 AM