Amphibian surveys at Klondike Gold Rush NHP: 2016 summary

Surdyk S and Evans S. 2018. Amphibian surveys at Klondike Gold Rush NHP: 2016 summary. Natural Resource Report. NPS/KLGO/NRR—2018/1589. National Park Service. Fort Collins, Colorado

Amphibian monitoring has been conducted annually at Klondike Gold Rush National Historical Park since 2004 with the primary goal to monitor long-term changes in amphibian distribution, abundance, reproduction, and survival at core breeding sites. The Park has two confirmed amphibian species, the boreal toad (Anaxyrus boreas, formerly Bufo boreas) and the Columbia spotted frog (Rana luteiventris); however, toads are the primary focus of monitoring efforts due to their relative abundance in the Taiya River watershed. In 2016, the monitoring season spanned for about two and a half months from May 24 to August 10. A total of 31 routine Visual Encounter Surveys were conducted at eight intensive core breeding sites in Dyea and West Creek, and five intensive non-core sites in Dyea, West Creek, Lost Lake, and the Chilkoot Trail. A total of 29 Visual Encounter Surveys were conducted at 22 extensive breeding sites in White Pass. Breeding activity was observed at four of the core sites. A total of 22 adult boreal toads (2 of which were in amplexus), 2 egg masses, ~ 82,000 tadpoles, 892 juveniles, and 918 metamorphs were observed. One adult Columbia spotted frog was discovered at White Pass at the Pumphouse Lake site (WP01) on August 10.

Type
Published Report
Authors
Surdyk, Shelby; Evans, Stacie
Date of Issue
2018-02
Publisher
National Park Service
Units
KLGO , NRSS
Keywords
Alaska, Anaxyrus boreas, boreal toad, Chilkoot TRail, chytrid, Columbia spotted frog, Dyea, KLGO, Klondike Gold Rush National Historical Park, Lost Lake, Rana luteiventris, Skaway, West Creek
Subjects
Ecological Framework: Biological Integrity | Focal Species or Communities | Amphibians and Reptiles

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