Herpetological wonders continue to unfold. The Cumberland Plateau and the Southern Appalachians are among the most diverse places in North America (and the world) for amphibians and, to a lesser extent, reptiles. The last few weeks have not disappointed in encounters with this group.
We found this Seal Salamander during my Advanced Ecology/Biodiversity lab last week. The animal was in a creek in Shakerag Hollow. It was about five inches long. Seal salamanders spend most of their time in water, but will wander on land to feed, especially on wet nights.
Unlike its close relatives, the Seal Salamander has tough cornified toe tips, possibly to help it climb vegetation during its terrestrial forays. You can see the blackened tips through the ziplock bag.
This Slimy salamander was under a rock in the same creek. This species is usually found away from water, under logs or rocks, so this individual may have just been passing through. Slimy salamanders lay their eggs in moist places on land and their young never dip their feet in water. Young Seal Salamanders, on the other hand, are aquatic and have feathery gills.
I found this Marbled Salamander during Intro Biology class. It was hiding under a log in a dried up vernal pool. In a normal year, the salamander would wait for several more months before the pool filled up. This week’s phenomenal rains mean that the pools are now overbrimming. We’ll see whether or not the water stays. If so, this will be the earliest filling of these ephemeral wetlands that I know of in recent years.
Scott Summers, a freshman at Sewanee, found this spectacular Red Salamander last week under a log near Morgan’s Steep. Great find!
A Pickerel Frog in Shakerag Hollow. Note the squarish spots on the back. The similar Leopard Frog has rounder spots that are more randomly scattered over the back.
A Green Frog snuggled underwater with an acorn. Also in Shakerag Hollow. Note the nice clear water — thankfully, not all streams have been impacted by silt runoff into the hollow.
And from an entirely different habitat, located just a stone’s throw away from the vernal pool: a fence lizard enjoying the baking sun on a sandstone outcrop near Piney Point. These outcrops are incredibly dry and blazing hot. Fence lizards love the heat.
In closing, a frission of danger. This Timber Rattlesnake was on the trail in the northern Smoky Mountains where I was botanizing with the TN Native Plant Society last weekend. The botanists stopped briefly to admire the snake’s freshly molted shine, then returned their attention to petioles, leaf margins, and floral structure. The snake had thirteen rattles, so it has molted thirteen times. They molt two or three times a year, so this one is relatively young. They live up to twenty years.