25 Dec '15, 11pm

Cutting-edge technology may help save endangered amphibians in Yosemite. @alisaopar explains how:

Cutting-edge technology may help save endangered amphibians in Yosemite. @alisaopar explains how:

Photo: Devin Edmonds/USGS A Sierra Nevada yellow-legged frog scans the landscape in Yosemite National Park It used to be hard not to find a Sierra Nevada yellow-legged frog underfoot when hiking around Yosemite National Park’s alpine lakes and meadows; it was once the most abundant amphibian in the region. But today, with less than 5 percent of the frog’s former numbers remaining, they’re one of North America’s most endangered amphibians. The recent global spread of the deadly chytrid fungus is partly to blame, but the tale of the yellow-legged frog’s demise begins more than a century ago. This is when park officials—aiming to please anglers—introduced trout to the park’s naturally fishless mountain lakes and streams. The trout ate the tadpoles, and frog numbers plummeted. Oops. In response, for the past several years, Yosemite has dispatched “killing crews” to cull trout ...

Full article: http://www.onearth.org/earthwire/sierra-nevada-yellow-leg...

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