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Orcasphere » climate change
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climate change Archive

Virus implicated in Fraser sockeye (and chinook?) mortality


The idea that a virus may play a part in the unpredictable Fraser river sockeye returns is (month) old news, but this article in Scientific American is the first to mention chinook that I’ve seen.  Perhaps the fate of the southern resident killer whales (who specialize on Fraser chinook in the summertime) is more connected [...]

Harmful algae & Fraser sockeye – liveblog


Dr. Jack Rensel, Rensel Associates Aquatic Sciences (works with Puget Sound fish farmers on permitting/etc., but not BC farmers) Harmful Algal Blooms and Possible Effects on Fraser River Sockeye Salmon 11:04 Intro Much of this talk is based on co-author Nicola Haigh’s 10-year sockeye database. Target algae of interest: Heterosigma akashiwo, HAMP database 11:06 Background [...]

Kalimari for orcas, or another salmon predator


Ron Hirschi, a local marine naturalist, is reporting Humbolt squid being caught on salmon gear in the central Strait of Juan de Fuca. Will they come all they way in in 2010? 11.30.09 Recreational salmon fishers are now catching them as far east as Sekiu in the Strait of Juan de Fuca. Watch for further [...]

Salmon court fallacy: we must spill or spew


There are some great observations and quotes in the liveblog of Matthey Preusch during the Nov 23, 2009, Salmon Court. This first one suggests a slight of hand or an ignorance of the primary findings of the Bright Future report — that we do not necessarily have to choose between spilling water for salmon in [...]

OR salmon and climate change


I’m not convinced it is worth worrying much about climate change and northwest salmon when there is so much we can do to assist their recovery on shorter time scales and locally.  While the effects on water temperature and runoff could be huge, I’ll place my bet on the oceanographic variations exerting the strongest control [...]