Much of their habitat is fragmented by roads, which is especially problematic when roads cut between their breeding wetlands and foraging habitat. Wood frogs spend winter on land, under leaf litter, logs or rocks. Prospect Creek, just south of the Brooks Range, had the coldest temperature ever recorded in Alaska—minus 80 degrees Fahrenheit. Coloration is tan to brown with a blackish or brown mask extending from the snout to just below the tympanum, and a light stripe below it on the upper jaw. They can be found under logs and rocks far from water, or in ponds. The home range of individual frogs can be as small as 100 square metres (0.01 ha or 0.03 acre), but is quite variable. Wood Frog.'' Habitat and range. Proceedings of the Royal Society B, 285, 20180241. https://www.chesapeakebay.net/discover/field-guide/entry/wood_frog Adults range up to 50 mm in length. In the spring, the land and the frog's body thaw before the icy covering of lakes, ponds, and rivers. Wiebler JM, Kohl KD, Lee Jr RE, Costanzo JP. As their name implies, wood frogs live in forested areas such as those found in northern Minnesota. In summer they are most active at night. You would expect to find Wood Frogs breeding in ponds, vernal pools, and marsh edges in or near forested habitat at a wide range of elevations as soon as the snow melts and the ground thaws. A typical egg mass can have between 500 and 2000 eggs. Wood Frog. They breed in wetlands, lakes, and stream backwaters, and overwinter under fallen leaves on the forest floor. Lithobates sylvaticus. ''Urea hydrolysis by gut bacteria in a hibernating frog: evidence for urea-nitrogen recycling in Amphibia.'' The wood frog can remain active at relatively low temperatures. Catalogue of American Amphibians and Reptiles. They lay their eggs primarily in temporary meltwater ponds, also known as vernal pools. They have prominent dorsolateral folds that extend from near the vent to the head. Wood Frog - Rana sylvatica Description The coloration of this 2- to 3-inch (5- to 7.6-cm) frog is an adaptation for blending with the leaves on the forest floor. The call of the wood frog is commonly described as a low, often rapid "quack" sometimes mistaken for a duck. Description: The wood frog is small to medium sized frog with adults ranging from 1.5 to 2.75 in (3.7 - 7 cm). The wood frog (Rana sylvatica) is a relatively small (1 to 3 inches long) black masked frog that occurs in a great range of locally variables colors including red, yellow, gray and brown. American Society of Ichthyologists and Herpetologists, 86.1-86.4. While Wood Frog populations remain strong through much of their range, certain threats pose a growing concern. First year frogs are about half this size. Range. It is found in New Hampshire. Habitat. Wood frogs are therefore able to breed before most other frog species. In cooler times of the year (spring and fall) wood frogs are more active during the day. The wood frog is found in much of Canada and Alaska, in New England and the Great Lakes region, and south along the Appalachians south to Tennessee, Kentucky, and northern Georgia. Coloration is thought to be greatly influenced by benefits of camouflage over a wide variety of its potential habitats. In the northern part of its range, the wood frog has a major advantage over other frogs. Almost certainly, there were hibernating wood frogs near Prospect Creek when that record was set. (2018). This is the winter world in which the wood frog …
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