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Long-term herpetofaunal response to repeated fuel reduction treatmentsAuthor(s): Cathryn H. Greenberg; Christopher E. Moorman; Charlotte E. Matthews-Snoberger; Thomas A. Waldrop; Dean Simon; Amanda Heh; Donald Hagan
Source: The Journal of Wildlife Management
Publication Series: Scientific Journal (JRNL)
Station: Southern Research Station
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Wildlife response to prescribed fires and mechanical fuel reduction treatments in an upland hardwood forest
DescriptionFuel reduction treatments are used to reduce wildfire risk and to restore plant communities. Yet, repeated mechanical or prescribed fire treatments may gradually change forest structure and microhabitat conditions, favoring some taxa and decreasing suitability for others. We experimentally assessed long-term (intermittent years, 2003–2016) effects of repeated dormant seasonmechanical and prescribed fire treatments on capture rates of reptiles and amphibians in southern Appalachian upland hardwood forests. Treatments were mechanical understory removal (twice), prescribed burning (4 times; burn-only), mechanical understory removal followed 1 year later by high-severity prescribed burns and 3 subsequent burns (mechanicalþburn), and untreated controls. Initial burns were hotter in mechanicalþburn than burnonly units, resulting in heavy tree mortality and increased canopy openness within 2 growing-seasons postburn. We captured 4,606 individuals of 15 amphibian and 20 reptile species. Capture rates of American toads (Anaxyrus americanus), green frogs (Lithobates clamitans), plethodontid salamanders (Plethodon spp.), and northern red salamanders (Pseudotriton ruber) were not affected by any fuel reduction treatment. The capture rate of five-lined skinks (Plestiodon fasciatus) was greater in mechanicalþburn than burn-only or control units, and the capture rate of eastern fence lizards (Sceloporus undulatus) was greater in mechanicalþburn than control units. Juvenile eastern fence lizard captures were greater in mechanicalþburn units and increased over time, indicating that high-severity burning followed by repeated burns may improve conditions for successful recruitment. Different responses among species highlight the importance of including multiple taxa when assessing effects of forest disturbances on wildlife, and give perspective on how
forest health may vary depending on target taxa. 2017 The Wildlife Society.
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CitationGreenberg, Cathryn H.; Moorman, Christopher E.; Matthews-Snoberger, Charlotte E.; Waldrop, Thomas A.; Simon, Dean; Heh, Amanda; Hagan, Donald. 2017. Long-term herpetofaunal response to repeated fuel reduction treatments. The Journal of Wildlife Management. 82(3): 553-565. 13 p. https://doi.org/10.1002/jwmg.21402.
Keywordsamphibian, anuran, fire severity, lizard, prescribed fire, repeated burn, reptile, salamander.
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