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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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Wednesday, January 30 • 11:20am - 11:30am
(WILDLIFE: LIGHTNING TALK) Estimating Abundance and Demographic Parameters of Canada Geese from Banding and Recovery Data

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AUTHORS: Tim Lyons, Larkin Powell – University of Nebraska-Lincoln; Mark Vrtiska, Nebraska Game and Parks Commission

ABSTRACT: Bird banding is a basic but important form of population monitoring that is vital to waterfowl management in the U.S. Most often, the data derived from state and federal banding programs are used to estimate survival and harvest rates and distributions across broad geographic regions, but they can also be used to estimate abundance at more local scales. However, absent or limited population surveys, banding efforts, or recoveries, from neighboring states or provinces complicates efforts, leading to ad hoc approaches to deal with these problems during analysis. Here, we use banding and recovery data of Canada geese in Nebraska 2006-2017 to assess the effects of changing harvest regulations on Canada goose demography and estimate abundance. We demonstrate a modified harvest derivation analysis and Lincoln-Peterson estimator to address pitfalls common to these approaches when estimating abundance. Finally, we discuss Jolly-Seber models as an alternative approach to estimating demographic parameters and abundance that circumvents the need for banding or population monitoring programs out-of-state and provides greater detail about the mechanisms responsible for population changes.

Wednesday January 30, 2019 11:20am - 11:30am
VETERANS MEETING ROOM A/B