Amphibians
Mount Lyell Salamander
Hydromantes platycephalus · also called Mount Lyell salamander
The Mount Lyell salamander lives higher than almost any other amphibian in North America, sheltering among granite boulders in the Sierra Nevada near or above the treeline, active for only a brief summer window each year when melting snow keeps its rocky world damp enough to survive in.
Overview
The Mount Lyell salamander, Hydromantes platycephalus, is restricted to high-elevation alpine and subalpine rock habitat within California’s Sierra Nevada mountains. A flattened body lets it squeeze into narrow granite crevices, and like several relatives, it hunts using a projectile tongue.
A short season, a narrow world
Eggs laid in rock crevices skip any aquatic larval stage entirely, hatching directly into miniature salamanders — well suited to a habitat with little standing water. Snowmelt dictates its brief active season each year, tying the species closely to a mountain climate now shifting.
Status
Least Concern but with a decreasing long-term outlook, as its narrow dependence on seasonal snowmelt makes it a species worth watching amid ongoing climate change.
Mount Lyell Salamander: common questions
How high up can a Mount Lyell salamander actually be found?
The species is documented at some of the highest elevations recorded for any North American amphibian, occurring in alpine and subalpine rocky habitat within the Sierra Nevada mountains of California, often near or above the treeline, an extreme elevational range compared with most other salamander species, which generally favour lower, more temperate forest or wetland habitat.
How does the Mount Lyell salamander survive such a short active season?
Because its high-elevation habitat remains covered in snow for much of the year, the species has adapted to a relatively brief period of surface activity during the cooler, moist conditions of summer when melting snowpack keeps its rocky crevice habitat sufficiently damp, spending the remainder of the year sheltered and largely inactive within rock crevices.
Why doesn't the Mount Lyell salamander need a pond to breed?
The species practises direct development, in which eggs laid in a moist, hidden rock crevice hatch straight into fully formed miniature salamanders without passing through a free-swimming, gill-breathing aquatic larval stage, an adaptation well suited to its rocky alpine habitat, where standing water suitable for a typical amphibian larval stage is often scarce or entirely absent.
Why might climate change be a concern for this species even though it isn't currently declining?
The Mount Lyell salamander depends closely on seasonal snowmelt and the cool, consistently moist rock crevice conditions this creates at high elevation, so changes in the timing, volume, or duration of mountain snowpack linked to a warming climate could alter these specific habitat conditions in ways that affect the species' narrow active season and moisture-dependent physiology, even though no severe decline has been documented to date.