Fossil Creek http://knau.org en Earth Notes: Exploring Fish Ecology in the Colorado River Drainage http://knau.org/post/earth-notes-exploring-fish-ecology-colorado-river-drainage <p>Over the past hundred years, people have introduced dozens of non-native fish species into the Colorado River&nbsp;and its tributaries. During that time, populations of native fish species have dropped, in some cases dramatically. It&rsquo;s easy to guess at the causes of native species decline, like predation and competition for food. But it&rsquo;s far more difficult to prove.</p> Wed, 01 Feb 2012 07:00:00 +0000 Alexandra Murphy 8237 at http://knau.org Earth Notes: Exploring Fish Ecology in the Colorado River Drainage