Biology

Judi Rochford

Forensic scientists (at least on TV shows) collect DNA to figure out who was at the scene of a crime. What if you could use the same technique to discover when a mountain lion crossed a river or what kind of fish live in a lake? A team at Embry Riddle Aeronautical University in Prescott is working on that idea as a new, faster way to survey wildlife. KNAU’s Melissa Sevigny reports.

Grand Canyon National Park / Erin Whittaker

Low, steady releases of water from Glen Canyon Dam are taking place this spring and summer as an experiment to increase aquatic insects on the Colorado River. KNAU’s Melissa Sevigny reports, these “bug flows” benefit the river’s ecology and might even help anglers catch more fish.


U.S. Forest Service, Coconino National Forest

Scientists at Embry-Riddle Aeronautical University in Prescott are working on a new way to survey wildlife—by collecting DNA from streams and rivers. It’s less expensive and less stressful to animals than traditional survey methods. KNAU’s Melissa Sevigny reports.


Melanie Fischer / USFWS

A new scientific report says the razorback sucker is on its way to recovery. The report recommends “downlisting” the Colorado River fish from endangered to threatened. KNAU’s Melissa Sevigny reports.

U.S. Bureau of Reclamation

A new study says endangered razorback suckers upstream of Lake Powell may struggle to migrate up the San Juan River to spawn. The fish are blocked by a waterfall that formed two decades ago when the river changed its course. KNAU’s Melissa Sevigny reports. 


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