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How much fertilizer can a river take? http://apocadocs.com/s.pl?1244212208
Every year, some of P.E.I.'s rivers and streams end up starved of the oxygen marine animals need. Huge blooms of sea lettuce grow and then rot, sucking the oxygen out of the water, causing fish and other creatures to die in what's called anoxic conditions.
Mike van den Heuvel of the Canadian Rivers Institute at UPEI has been looking at the example of the Wilmot River near Summerside, where the equivalent of several pickup trucks full of fertilizer is going into the water every day. Van den Heuvel, who is being consulted by the government, is one of the scientists trying to find that safe level of nitrates for Island rivers.
While that level has not been established, he told CBC News Thursday too much is making its way into some rivers, and if changes aren't made, the consequences could be dire.
"Ultimately it could have effects on economically important industries. For example, the mussel farming industry depends on the estuaries," said van den Heuvel.
"Also tourism is also a very important industry for P.E.I., and smelly anoxic estuaries are not really a big draw for tourists."
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[Read more stories about:
toxic buildup, water issues, algal bloom]
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