Sora Virginia and Yellow Rails Auriel MV Fournier Arkansas Cooperative Fish and Wildlife Research Unit University of Arkansas Kiel Drake Doug Tozer Bird Studies Canada David G Krementz ID: 785948
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Slide1
Migratory Connectivity of Sora, Virginia and Yellow Rails
Auriel M.V. Fournier – Arkansas Cooperative Fish and Wildlife Research Unit – University of ArkansasKiel Drake, Doug Tozer – Bird Studies CanadaDavid G. Krementz – USGS Arkansas Cooperative Fish and Wildlife Research Unit – University of Arkansas
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RallidaeRule
Slide2Stopover habitat for wetland species has been greatly reduced in the U.S (>60%)Waterfowl connectivity has been studiedOther wetland species are unknown
Especially hard for small species with no site fidelity Stopover, Migration, Wetlands
Slide3Why Rails? Why Stable Isotopes?
Important connection between wetland systemsSora and Virginia Rail are game speciesElusive, poorly studied, wetland obligateNo known site fidelityIsotopes – Single capture neededButler et al. 2016 – Yellow Rails in inland Canada
Slide4Sample Collection
Breeding GroundsFoam Lake, Saskatchewan All SpeciesMigrationSora Virginia RailYellow Rail
Slide5Stable Hydrogen Isotopes
Image: http://www.animalmigration.org/stable_isotopes/index.htm
Slide6Fournier & Sullivan et al 2016 Journal of Applied Ecology DOI 10.1111/1365-2664.12723
Stable Hydrogen
Species Distribution
Model
Stables Isotopes with Species Distribution Model Prior
Slide7Species Distribution Models
Regional, State and Provincial Marshbird Monitoring ProgramsLogistic RegressionUsed 21 environmental covariates related to Temperature Wetland cover Rainfall
Bayesian prior
Van Wilgenburg, S.L., and K.A. Hobson. 2011. Combining stable-isotope and band recovery data to improve probabilistic assignment of migratory birds to origin. Ecological Applications 21: 1340-1351.
Slide8Model Results
Virginia RailStandard Deviation of TemperatureModeling continues to be challengingSora and Yellow RailMean Temp Driest QuarterMean Temp Warmest QuarterMean of monthly temperature rangeNon-forested Wetland presence
Slide9Yellow Rail
Slide10Virginia Rail
Slide11Sora
Slide12Next Steps
Better east coast data for SDMBetter environmental/habitat data to feed into SDMBring in additional isotopesButler et al 2016 found Sulphur to be helpfulUse other forms of tracking connectivity
Slide13Acknowledgements
Wonderful Technicians!Funding FromGarden Club of America Frances M. Peacock Scholarship, Arkansas Cooperative Fish and Wildlife Research Unit
Slide14Questions?
Presentation Available - tinyurl.com/rail-naoc16DOI: 10.6084/m9.figshare.3565578aurielfournier@gmail.com@RallidaeRule aurielfournier.github.io
Butler, C.J. Wilson J.K. Frazee S.R. Kelly J.F. 2016. A Comparison of the origins of Yellow Rails wintering in Oklahoma and Texas, USA WaterbirdsFournier, A.M.V. Sullivan A.R. Bump J.K. Perkins M. Shieldcastle M.C. King S.L. 2016. Combining citizen science species distribution models and stable isotopes reveals migratory connectivity in the secretive Virginia Rail.
Journal of Applied EcologyVan Wilgenburg, S.L., and K.A. Hobson. 2011. Combining stable-isotope and band recovery data to improve probabilistic assignment of migratory birds to origin. Ecological Applications
21: 1340-1351.