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View Diary: We Could Have Stopped It 100 Times, And We'll Fail Again (243 comments)

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  •  Monterey Bay Aquarium report (3+ / 0-)
    Recommended by:
    Fabian, Rex Freedom, ms badger

    Monterey Bay Aquarium's Seafood Watch program has a report on Great Lakes fishing.  Here's what it had to say wrt to brown trout and other introduced predator fish:

    Introduced predators – Top predator fish have been deliberately stocked in the Great Lakes since the end of the 19th century, when Chinook salmon (Oncorhynchus tshawytscha) and brown trout (Salmo trutta) were introduced to provide greater fishing opportunities. In the 20th century, further predator stocking of species like Coho salmon(Oncorhynchus kisutch) was initiated in order to control expanding populations of rainbow smelt and alewife. Since then, these species have grown to support lucrative sport fisheries. However, their presence in the Great Lakes is somewhat controversial, as they compete with native predators for food and there is concern that continued stocking of these species is impeding the recovery of lake trout stocks (Mills et al. 1994). Furthermore, a decline in abundance of both alewife and rainbow smelt in recent years indicates that the Great Lakes cannot support the high predator density that is resulting from predator stocking coupled with some recovery of native predator populations, such as walleye, and the substantial natural reproduction of introduced Chinook salmon now occurring. It is generally agreed that predator stocking will have to be substantially reduced, if not eliminated, in order to bring back a self-sustaining and native Great Lakes fish community (Kitchell et al. 2000).

    Procrastination: Hard work often pays off after time, but laziness always pays off now.

    by Linnaeus on Tue Apr 27, 2010 at 04:35:31 PM PDT

    [ Parent ]

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