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1 January 2011 Non-Native Species Impacts on Pond Occupancy by an Anuran
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Abstract

Non-native fish and bullfrogs (Lithobates catesbeianus) are frequently cited as contributing to the decline of ranid frogs in the western United States, so we hypothesized that non-native species, habitat, or a combination of these relate to the probability of local extinction for northern red-legged frogs (Rana aurora) in Oregon, USA. We also hypothesized that the probability of colonization relates to land use, wetland size, or riparian forest. In a 5-yr study, we found no support for an effect of non-native species on northern red-legged frogs. Instead, probability of local extinction decreased with the extent of emergent vegetation and riparian forest. This finding suggests that managers consider the role of habitat when confronting non-native species problems.

© 2011 The Wildlife Society.†
Michael J. Adams, Christopher A. Pearl, Stephanie Galvan, and Brome McCreary "Non-Native Species Impacts on Pond Occupancy by an Anuran," Journal of Wildlife Management 75(1), 30-35, (1 January 2011). https://doi.org/10.1002/jwmg.29
Received: 18 February 2009; Accepted: 1 May 2010; Published: 1 January 2011
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