Items by Guy Webster — 2 items
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The snail that stands like a dam
Future human-made floods from Glen Canyon Dam, designed to help restore the Colorado River in the Grand Canyon, are on hold until scientists find a way to protect and recover an endangered subspecies, the Kanab ambersnail.
by Guy Webster, Jul 31, 2000 -
Crawdads colonize the West's waterways
Exotic crayfish are invading streams throughout the West, and devastating the native crayfish and other riparian wildlife.
by Guy Webster, Jun 19, 2000






