<< When we're up north tho, I don't think there's as much chance for mercury
buildup, but I have seen a couple lakes go "sterile", which is sooooo not
cool. >>
It depends on the body of water, I don't know how far north you need to go
but according to Ontario's Guide to Eating Ontario Sport Fish, you can be way
up there and still need to be careful. For example the Abitibi River contains
walleyes that should be eaten only sparsely over 12 inches. Whereas farther
south, the warning starts at 22 inches for walleye in Lake Scugog, as an
example.
See
http://www.ene.gov.on.ca/envision/guide/
Lee Harper
Media, PA
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