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Orcasphere » Salmon
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Salmon Archive

Orcas to come up empty mouthed in CA?


The southern residents typically migrate all the way down to California’s Monterey Bay, often arriving there in January.  The presumably feed on salmon returning to or departing WA, OR, and CA rivers.   Below is an interesting article — in part because  members of all three pods have been sighted in the Salish Sea multiple times [...]

An example of NMFS restricting pesticide use in Oregon


Has this been done in Washington State already? clipped from www.oregonlive.com Restrictions placed on three pesticides deemed harmful to fish by Michael Milstein, The Oregonian Tuesday November 18, 2008, 9:07 PM Federal fisheries biologists today, concluding that three pesticides used throughout the Willamette Valley harm imperiled salmon, ordered sharp new restrictions on use of the [...]

WDFW says fish for Blackmouth


After hearing Sandra O’Neill talk about how resident Chinook are so much more contaminated with PCBs and PDBEs than offshore Chinook, I’m wondering if WDFW shouldn’t encourage harvesting of all blackmouth in a manner that maximizes the sequesteration of bioaccumulating toxins in landfills and/or humans.  Maybe we could limit recreational, commerical, and tribal catch of [...]

Bad news for orca prey research


The funds from the Pacific Salmon Commission could be a great catalyst of research about the behavior and ecology of the Chinook and chum salmon that southern residents appear to prefer. This decrease in endowment coupled with the recent news of losses in the SRKW population — possibly related to starvation — add up to [...]

Live blog: Duwamish talk by Maclure at UW


Here’s my first attempt at live-blogging… 8:40-9:20 a.m. from the University of Washington’s Water Seminar. 8:40 Key findings of his and Lisa Stiffler’s investigation of the Duwamish estuary: Pollution is historic an ongoing; diversity is down; everyone is contributing to the problem (e.g. run-off) Some chemicals lethal; some not (Cu not good for young salmon; [...]

$8B salmon recovery failure


This 60-Minutes story makes it clear that removal of the four lower Snake River dams makes fiscal sense to the American tax-payer.  As an oceanographer, however, I’m intrigued with how little seems to be known about how the salmon fare in the ocean.  Along with the dams, land-use, and pollution, the other major potential impacts [...]

New NW salmon recovery plans


Lisa Stiffler’s blog calls out 3 new plans and a new study released Monday May 6, 2008 — http://blog.seattlepi.nwsource.com/environment/archives/138288.asp

Brad Hanson on orca diet


Monster Jam, Brad Hanson, 07/04/05 Diet of southern resident killer whales Inferences from prey samples and sensors deployed on killer whales Time-depth-recorder deployments in southern residents Baird and Hansen+? (2005) J Canadian Zoology 40 deployments from 1993-2002 ~10.5 minutes median record duration L87 Haro Strait example record: 2 dives to 100m with velocity spikes near [...]