Salmon study: Dammed or not

A river with zero dams or a river with eight may not be much different for the survival of young salmon

By Susan Milius, 17:11 PM October 27, 2008

There could be little difference in how young salmon survive their journey down a free-flowing river versus the heavily dammed Columbia River system, says a controversial new study.

A new system for tagging small fish allows biologists to monitor young salmon migration survival in a big, undammed river for the first time, David Welch of Kintama Research Corporation in Nanaimo, Canada, and colleagues report online October 28 in PLoS Biology

The technique also opened the way for a compari...

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