Sierra Nevada Aquatic Research Laboratory Videos

An unexpected recovery, UC Santa Barbara
For more than two decades, UC Santa Barbara biologist Roland Knapp has been working with mountain yellow-legged frogs in the Sierras. Based at the UCSB-managed Sierra Nevada Aquatic Research Laboratory, he has seen and studied drastic changes in frog populations, watching their numbers dwindle from many thousands to nearly zero at some locations. And now he’s seeing them return.