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Welcome to the interactive web schedule for the 2019 Midwest Fish & Wildlife Conference! The schedule is subject to change (as of November 7, 2018). Please check back for updates. To return to the main Conference website, go to: www.midwestfw.org.

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Monday, January 28 • 11:40am - 12:00pm
(SYMPOSIA-02) Monitoring Eastern Massasauga Populations Within the Carlyle Lake Region

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AUTHORS: Michael J. Dreslik, Illinois Natural History Survey; John A. Crawford, National Great Rivers Research and Education Center; Sarah J. Baker, Illinois Natural History Survey; Christopher A. Phillips, Illinois Natural History Survey

ABSTRACT: For effective conservation and recovery, an adaptive management framework is often best when paired with monitoring population-level responses. In many species, monitoring abundances over time using traditional capture-mark-recapture (CMR) methods is logistically challenging. N-mixture models are an extension of the occupancy and detection probability framework and can estimate abundances across multiple populations. The models use raw abundance counts taken during surveys, model the distributions of capture frequencies, incorporate density-dependent effects and can provide population estimates when recaptures are too few. When validated with traditional CMR estimates, they can provide robust estimates for multiple populations across the landscape. We chose to determine the effectiveness of an N-mixture modeling approach to generate population size estimates for the Eastern Massasaugas within the Carlyle Lake region in Illinois. Our results will be used to determine regional population trends and provide a foundation to assess the effectiveness of conservation actions.

Monday January 28, 2019 11:40am - 12:00pm
HOPE BALLROOM B