Biology

USGS

This weekend, managers at Glen Canyon Dam will begin a first-of-its-kind experiment to release water that benefits bugs, which play a vital role in the Colorado River ecosystem. KNAU’s Melissa Sevigny reports.


National Park Service

Scientists have made the first-ever map of how tamarisk beetles have spread into the Grand Canyon from other states. The leaf-eating beetles were introduced to control the invasive trees. But as KNAU’s Melissa Sevigny reports, they weren’t supposed to survive as far south as Arizona.

Richard Spitzer

For the first time a bat has recovered from its status as an endangered species. The U.S. Fish and Wildlife Service plans to de-list Arizona’s lesser long-nosed bat. KNAU’s Melissa Sevigny reports.

Jim Rorabaugh/USFWS

The southwestern willow flycatcher will remain on the endangered species list, following a review of its status as a unique subspecies. KNAU’s Melissa Sevigny reports.


Grand Canyon National Park

Climate models predict the pinyon pine could disappear from Arizona this century. New research from Northern Arizona University looks at why some pines survive and others don’t. KNAU’s Melissa Sevigny reports.


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