Amphibians
Siskiyou Mountains Salamander
Plethodon stormi · also called Siskiyou Mountains salamanders
A Siskiyou Mountains salamander shelters deep within a talus slope, protected from surface extremes by rock and by the forest canopy overhead. Remove that canopy through nearby logging, and the cool, moist conditions this salamander depends on can quietly disappear, even if not a single rock in its shelter is ever moved.
Overview
The Siskiyou Mountains salamander, Plethodon stormi, is a lungless amphibian native to forested talus habitat within the Klamath-Siskiyou mountain region along the Oregon-California border. Its dependence on both rocky talus and the forest canopy above it makes the species vulnerable to disturbances that never directly touch its physical shelter.
Habitat that depends on what’s overhead
Unlike species harmed only by direct physical disturbance, the Siskiyou Mountains salamander’s survival hinges partly on forest canopy conditions above its rocky shelter, a genuinely indirect vulnerability that complicates straightforward habitat protection.
Status
Vulnerable — facing ongoing pressure from logging-related canopy loss above its specific talus habitat requirements.
Siskiyou Mountains Salamander: common questions
Why can logging harm the Siskiyou Mountains salamander without touching its habitat directly?
Because forest canopy cover above talus slopes helps maintain the cool, moist conditions the Siskiyou Mountains salamander depends on, logging operations that remove canopy near occupied talus can degrade the surrounding microclimate enough to harm the species even when the actual rocks and talus habitat are never physically disturbed.
What is talus, and why does the Siskiyou Mountains salamander need it?
Talus refers to accumulations of broken rock found on slopes, and the Siskiyou Mountains salamander shows a strong dependence on this rocky habitat, relying on the deep spaces between rocks for shelter, moisture retention, and protection from temperature extremes that the species could not otherwise tolerate on the surface.
How large is the Siskiyou Mountains salamander's range?
The Siskiyou Mountains salamander occupies a relatively narrow natural range concentrated around the Siskiyou Mountains straddling the border between southern Oregon and northern California, restricted to specific forested talus habitat within this broader Klamath-Siskiyou mountain region.
Where does the Siskiyou Mountains salamander live?
The Siskiyou Mountains salamander is native to a limited area of forested talus habitat within the Klamath-Siskiyou mountain region of southern Oregon and northern California, generally requiring both rocky talus slopes and adequate forest canopy cover above them to maintain suitable moisture conditions.