You are here:
CAN WE ALTER LANDSCAPE PATTERN TO MINIMIZE THE SPREAD OF EXOTIC BULLFROGS?
Citation:
Heppell, S., K. Wegner, H. R. LaVigne, AND C. VanDyke. CAN WE ALTER LANDSCAPE PATTERN TO MINIMIZE THE SPREAD OF EXOTIC BULLFROGS? Presented at 2001 Joint Meeting Oregon Chapters of American Fisheries Society and Wildlife Society, Portland, OR, February 14-16, 2001.
Description:
We conducted field surveys and a radio telemetry study to determine bullfrog dispersal and habitat use. Juvenile and adult bullfrogs travel substantial distances over land (2+ kilometers) and utilize various upland habitat. This information was used to parameterize a spatially-explicit population model designed to evaluate the effect of alternative landscapes on bullfrog distributions. It is unlikely that any existing or future wetlands in the Willamette Valley are unsusceptible to bullfrog invasion. However, vegetation, hydrology, connectivity by canals or ditches, and distance from source populations do affect bullfrog distributions. These factors may provide guidelines for wetlands mitigation and restoration projects.