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Hibernacula and summer den sites of pine snakes (Pituophis melanoleucus) in the New Jersey pine barrens

Journal of Herpetology

By:
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https://doi.org/10.2307/1564337

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Abstract

We examined eight summer dens (used only in summer) and seven hibernacula (occupied both in winter and summer) of the snake Pituophis melanoleucus in the New Jersey Pine Barrens, comparing above ground characteristics of hibernacula and summer dens with characteristics at nearby random points. Temperatures at the soil surface and at 10 cm depth were significantly warmer, and there was less leaf cover around the random points compared to the entrances of the hibernacula and summer dens. Hibernacula had significantly more vegetation cover within 5 m, more leaf cover over the burrow entrance, and were closer to trees than were summer dens. Most hibernacula and summer dens were beside old fallen logs (73%), the entrance tunnels following decaying roots into the soil. Excavation of the hibernacula and summer dens indicated that most hibernacula appeared to be dug by the snakes and had an average of eight side chambers and 642 cm of tunnels, compared to less than one side chamber and 122 cm of tunnels for summer dens. Except for hatchlings, most snakes in hibernacula were located in individual chambers off the main tunnel; all snakes were at depths of 50-111 cm (X̄ = 79 cm). Pine snakes may select optimum hibernation sites which reduce winter mortality.

Additional publication details

Publication type:
Article
Publication Subtype:
Journal Article
Title:
Hibernacula and summer den sites of pine snakes (Pituophis melanoleucus) in the New Jersey pine barrens
Series title:
Journal of Herpetology
DOI:
10.2307/1564337
Volume:
22
Year Published:
1988
Language:
English
Publisher:
Society for the Study of Amphibians and Reptiles
Contributing office(s):
Western Ecological Research Center
Description:
p. 425-433
First page:
425
Last page:
433