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Thread: ADF&G Chinook Salmon Symposium

  1. #1
    Member Cliffhanger's Avatar
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    Default ADF&G Chinook Salmon Symposium

    Fish & Game will be having a symposium Oct. 22 & 23 at the Egan Center "to identify and discuss key knowledge gaps and assemble a list of potential research priorities to fill these gaps". It's a start perhaps to seeing what's going on with our king salmon fishery.

    Here's the website for more info.

  2. #2
    Member fishNphysician's Avatar
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    Thanks for sharing, Jim. Excellent news!

    Read thru the PDF about "knowledge gaps". Hope the state is willing to dedicate the necessary the $$$ to fund this rather ambitious project.

    I found a VERY disturbing footnote on page 9 (could not copy and paste from the PDF so sorry if I screw up the exact text)

    Comprehensive analysis of 25 stocks of chinook salmon from Oregon to the Yukon by Canadian and US scientists shows the optimal MSY exploitation rate to be 63% for "stream type" (one fresh) chinook.

    JFC! 63 percent! That means killing about 2 out of every 3 adult recruits from the total production.

    Do they really believe this is sustainable?
    "Let every angler who loves to fish think what it would mean to him to find the fish were gone." Zane Grey
    http://www.piscatorialpursuits.com/uploads/UP12710.jpg
    The KeenEye MD

  3. #3

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    I believe this is the citation for the study:


    1. M. C. LIERMANN,
    2. R. SHARMA,
    3. C. K. PARKEN. 2010.Using accessible watershed size to predict management parameters for Chinook salmon, Oncorhynchus tshawytscha, populations with little or no spawner-recruit data: a Bayesian hierarchical modelling approach. Fisheries Ecology and Management 17(1): 41-50.


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    Doc, I think you are looking at it the wrong way. The 63 % is of the Maximum Sustainable Yield escapement........so, if the proper number is put in, the return will have a 63% surplus to be harvested to acheive that magic MSY number again. Only the management to that number will yield that kind of output. It's not a blanket kill goal up to 63 % of a forecast.

  5. #5
    Member fishNphysician's Avatar
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    63% exploitation rate means just that... we're killing 2 out every 3 fish produced in those stocks.

    And that's just the ones they can account for. God only knows how bad it would be if we could account for the "ghost" harvest.

    Over-exploitation, pure and simple.

    And simply unsustainable.

    Look to the Yukon as a case study....

    http://www.piscatorialpursuits.com/f....html#Post5407
    "Let every angler who loves to fish think what it would mean to him to find the fish were gone." Zane Grey
    http://www.piscatorialpursuits.com/uploads/UP12710.jpg
    The KeenEye MD

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