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Posted Thu Oct 21 2010: from
CBC:
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Canada's marine ecosystems face threat: report http://apocadocs.com/s.pl?1287676652
A multi-year study by the federal government has produced a troubling report card on the health of Canada's marine environments, with major changes detected in all three oceans.
Vanishing sea species, warming water temperatures and a new wave of contaminants have struck Canada's marine ecosystems, according to the document from the federal Fisheries Department.
The 38-page report was released, without fanfare, this summer....
"What we do know, from a biodiversity trend perspective, is that things have been getting worse -- much worse," said Dalhousie University's Jeff Hutchings, who reviewed a draft of the report card for Environment Canada.
"What we don't know, to be fair, is what the consequences of those reductions will always be. But we have reasonable evidence in some instances to know that they're not going to be good."...
Overfishing has caused numerous commercial fish stocks to plummet. For example, the report said that one Pacific herring stock is "at record low levels of abundance."
In the Canadian Arctic Archipelago, warming ocean temperatures have decimated ivory gull populations by more than 80 per cent since the 1980s.
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