… In new research published in the journal Biological Conservation, (UC Davis PhD candidate Sidney) Woodruff and her colleagues propose a possible — though intensive — countermeasure: a near-total eradication of the bullfrog from habitats that it has invaded. The result was the striking recovery of the Northwestern pond turtle, California’s only native freshwater pond turtle species, at a couple of remote bodies of water within Yosemite National Park. … Woodruff and her colleagues conducted a combination of night surveys to remove the adults and day surveys to go after bullfrog egg masses. Across two sites, she estimates they removed some 16,000 bullfrogs, amounting to a near-complete eradication. And after several years of removal, “we came across our first couple of small pond turtle hatchlings and juveniles swimming out in the environment,” says Woodruff.

Other invasive species news:

• The Mercury News (San Jose, Calif.): ‘They eat everything’: Wild pigs increase around the Bay Area, causing headaches for homeowners, parks and water agencies
• Tahoe Daily Tribune (South Lake Tahoe, Calif.): Public is invited to free training on how to protect Lake Tahoe from golden mussels, other aquatic invasive species​