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Data Repository For "North American Porcupine Distribution In The Pacific Northwest And Evaluation Of A Non-Invasive Monitoring Technique", Cara L. Appel, Katie M. Moriarty, Sean M. Matthews, David S. Green, Stacy Anderson, Evan King, J Scott Yaeger, Jeremy Brown, Claire Bortot, Tim Bean Jan 2021

Data Repository For "North American Porcupine Distribution In The Pacific Northwest And Evaluation Of A Non-Invasive Monitoring Technique", Cara L. Appel, Katie M. Moriarty, Sean M. Matthews, David S. Green, Stacy Anderson, Evan King, J Scott Yaeger, Jeremy Brown, Claire Bortot, Tim Bean

Research Data Sets

North American Porcupines (Erethizon dorsatum) have a broad geographic distribution across much of the continent, but recent evidence suggests that their populations may be declining in some areas, including the Pacific Northwest. Estimating baseline historical and contemporary distributions of Porcupines is necessary for initiating monitoring efforts and, if necessary, informing strategic conservation actions. We compiled 1905 occurrence records of Porcupines in Washington, Oregon, and northern California from 1908 to 2018. Using maximum entropy modeling (Maxent), we created historical and contemporary distribution models based on Porcupine records from 1981–2010 and 2012–2018, respectively, to match the temporal scale of available …


Data Repository For "Use Of Redwood Basal Hollows By Bats: A Focus On The Townsend’S Big-Eared Bat On The North Coast Of California", Amon J. Armstrong Jan 2021

Data Repository For "Use Of Redwood Basal Hollows By Bats: A Focus On The Townsend’S Big-Eared Bat On The North Coast Of California", Amon J. Armstrong

Research Data Sets

Loss of roosting resources, either through disturbance or removal, negatively affects bats. Identifying sensitive species and determining roost requirements are critical components in conserving their habitat. Cavity roosting bats on the North Coast of California are known to use hollows in large redwood trees. In this study, we examined the factors determining the use of basal tree hollows by different bat species at eight redwood forest sites in Del Norte, Humboldt, and Mendocino Counties, California. Bat guano was collected from 179 basal hollow roosts from 2017 to 2018, and guano mass was used as an index of roosting activity. Nine …