NDLI: Effects of off-road vehicles on reproductive success of pine snakes (Pituophus melanoleucus) in the New Jersey pinelands

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Effects of off-road vehicles on reproductive success of pine snakes (Pituophus melanoleucus) in the New Jersey pinelands

Content Provider	Springer Nature Link
Author	Burger, Joanna Zappalorti, Robert T. Gochfeld, Michael DeVito, Emile
Copyright Year	2007
Abstract	Considerable attention has been devoted to the effects of people and their vehicles on birds and mammals, but possible effects on reptiles in populated areas have received less attention. Moreover, the effects of human activities on reptile reproductive success itself has been harder to demonstrate. This paper examines the effect of management of off-road vehicles in New Jersey’s pinelands on the reproductive success of pine snakes (Pituophus melanoleucus) from 1986 to 2005. We used the percentage of snakes in each hibernaculum that were young of the year (hatchlings) as an indicator of reproductive success, and compared this percent for five hibernacula that were in an area with varying degrees of off-road vehicle (ORV) disturbance, with 12 hibernacula in areas with no ORV disturbances (reference sites). This percent took into account differences in absolute numbers from one location to another, and over time due to hibernacula destruction (by people or predators) and natural variations (food supply). The ORV pressure in the pinelands is intense because it lies within the most densely populated urban area in the United States. Although the number of snakes in the reference hibernacula varied over the years from 46 to 63, the percent of young in these hibernacula did not vary significantly over the 20 year period (21–29%). In contrast, the percent-young in the disturbed sites differed significantly in years without ORV disturbance (28%) compared to those with ORV disturbance (15 and 16%, P < 0.01). Further, there were no differences between the percent of young in the reference sites and those in the disturbed site in years without ORV disturbance. ORV disturbance ceased only with the creation of large dirt berms coupled with fences that could not be easily broken. These data indicate the importance of having detailed population data on pine snakes in hibernacula, on ORV use (or indications of such use), and of managing ORV use to protect sensitive populations. Maintenance of healthy pine snake populations in urban areas may require continued adaptive management.
Starting Page	275
Ending Page	284
Page Count	10
File Format	PDF
ISSN	10838155
Journal	Urban Ecosystems
Volume Number	10
Issue Number	3
e-ISSN	15731642
Language	English
Publisher	Springer US
Publisher Date	2007-03-28
Publisher Place	Boston
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Human disturbance Off-road vehicles Reptiles Snakes Hibernating Urban wildlife State parks Nature Conservation Environmental Management Ecology
Content Type	Text
Resource Type	Article
Subject	Ecology Urban Studies

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