Fig 3. New incidences of Bd-positive amphibians in the Sierra Nevada mountain range per time period in California from 1900–2009.

The earliest Bd positives (12/26) were detected in Yosemite National Park were in the 1970s (mass die offs documented there in 1978 [Sherman and Morton 1993]). The first Bd positives (1586/3492) detected in Sequoia- Kings Canyon National Parks were in the 2000s (mass die offs documented there beginning in 2004; [7]). The Sierra Nevada mountains are denoted by light gray shading.