PRELIMINARY FINDINGS OF POND RESTORATION AT GOAT ROCK BHR FOR CALIFORNIA RED-LEGGED FROG AND NORTHWESTERN POND TURTLE | |||
| Matthew Bettelheim; AECOM; matthew.bettelheim@aecom.com; Andrea Irons, Farley Connelly, Taty Soto-Bartzi, Alan Striegle, Brittney Johansen | |||
The Goat Rock BHR site is one of five mitigation sites in the Sunol region (Alameda County) managed by the San Francisco Public Utilities Commission (SFPUC). Beginning in 2014, eight ponds at the site have been surveyed annually. One of those ponds was silting and filling with cattails, so in 2025 a restoration effort was initiated to restore and enhance the habitat for California red-legged frog (Rana draytonii) and northwestern pond turtle (Actinemys marmorata). In late September 2025, 684 California red-legged frogs [646 juveniles (90% of them recent metamorphs) + 38 adults] and seven northwestern pond turtles were either relocated or temporarily removed during vegetation and silt removal. These numbers are meaningful when compared to the previously observed frog and turtle numbers: an average of 1.88 (range: 0 to 10) adult and subadult California red-legged frogs, and an average of 1.47 (range: 0 to 5) adult and subadult northwestern pond turtles each prior visit. In addition to this quantification of species detectability vs actual abundance, northwestern pond turtle nesting activity was confirmed via a scent dog, and telemetered turtles are expected to provide insight into the turtles’ response to construction activities and/or relocation. | |||
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