Browsing by Author "Peterson, Sean M"

Now showing 1 - 6 of 6
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    Data and code supporting: Exposure to risk factors experienced during migration is not associated with recent Vermivora warbler population trends
    (2023-01-27) Kramer, Gunnar R; Andersen, David E; Buehler, David A; Wood, Petra B; Peterson, Sean M; Lehman, Justin A; Aldinger, Kyle R; Bulluck, Lesley P; Harding, Sergio; Jones, John A; Loegering, John P; Smalling, Curtis; Vallender, Rachel; Streby, Henry M; gunnarrkramer@gmail.com; Kramer, Gunnar R
    Data and code supporting the publication "Exposure to risk-factors experienced during migration is not associated with recent Vermivora warbler population trends".
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    Data from range-wide study of migratory connectivity of Vermivora warblers
    (2018-02-01) Kramer, Gunnar R; Andersen, David E; Buehler, David A.; Wood, Petra B; Peterson, Sean M; Lehman, Justin A; Aldinger, Kyle R; Bulluck, Lesley P; Harding, Sergio; Jones, John A; Loegering, John P; Smalling, Curtis; Vallender, Rachel; Streby, Henry M; gunnarrkramer@gmail.com; Kramer, Gunnar, R
    This collection of files provide data from a range-wide study of the migratory ecology of Vermivora warblers. Data include raw light-level data from geolocators, R code, and associated output. These data can be used to recreate analyses including: (1) Individual nonbreeding occurrence and population-level nonbreeding overlap (2) Individual migration routes and spatial distribution of individuals and populations during migration
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    Data supporting the comparison of golden-winged warbler and American woodcock productivity in northern Minnesota, USA
    (2019-02-06) Kramer, Gunnar R; Peterson, Sean M; Daly, Kyle O; Streby, Henry M; Andersen, David E; gunnarrkramer@gmail.com; Kramer, Gunnar R; Minnesota Cooperative Fish and Wildlife Research Unit
    Spatially explicit predicted reproductive output for golden-winged warblers and American woodcock at Tamarac National Wildlife Refuge, Minnesota, USA used to compare reproductive output of woodcock and warblers in Kramer et al. (2019; DOI:https://doi.org/10.1016/j.biocon.2019.02.039). Models developed by Peterson (2014: http://hdl.handle.net/11299/167309),Peterson et al. (2016) rely on raw demographic data for golden-winged warblers collected and reported by Peterson (2014; http://hdl.handle.net/11299/167309). Models developed by Kramer (2017; http://hdl.handle.net/11299/188784) and Kramer et al. (in press) use raw demographic data for American woodcock collected and reported by Daly (2014; http://hdl.handle.net/11299/167288).
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    DEMOGRAPHIC RESPONSE OF GOLDEN-WINGED WARBLER TO HABITAT MANAGEMNET ACROSS A CLIMATE CHANGE GRADIENT IN THE CORE OF THE SPECIES' RANGE: 2012 SUMMARY REPORT
    (2012-12-31) Streby, Henry M; Peterson, Sean M; Andersen, David E
    In 2012 we repeated our 2011 efforts with a substantial increase in data collected. This was the second and final full field season investigating population ecology of Golden-winged Warblers (Vermivora chrysoptera; hereafter GWWA) at Tamarac National Wildlife Refuge (NWR) and Rice Lake NWR in Minnesota and Sandilands Provincial Forest (PF) in Manitoba. We assessed nesting habitat use, nest productivity, fledgling survival, and post-fledging habitat use by GWWA at all three sites. We color banded 107 adult female and 112 adult male GWWA and we attached radio transmitters to 108 adult females. By tracking radio-marked females and by nest searching, we found and monitored 149 nesting attempts including 2 nests found by others conducting research at Tamarac NWR (see acknowledgments). The 66% increase over the 2011 nest sample was partly due to increased effort to radio-mark adult females, but mostly to the return of many experienced nest searchers from 2010 and 2011. We banded 311 nestlings and fledglings and radio-tracked 175 fledglings. We collected data on habitat characteristics and GWWA behavior at >2,400 adult, nest, and fledgling locations. Including renesting, we estimated that 58%, 74%, and 79% of females successfully nested and that 53%, 49%, and 48% of fledglings survived to independence from adult care at Tamarac NWR, Rice Lake NWR, and Sandilands PF, respectively. Interestingly, the increases (over 2011) in successfully nesting females at Rice Lake NWR and Sandilands PF were accompanied by considerable decreases in fledged brood size due to many partial-brood nest predation events, and the decrease in successfully nesting females at Tamarac NWR was accompanied by a considerable increase in fledged brood size. Similar to 2011, nest failure and fledgling mortality were due nearly entirely to predation at the Minnesota sites, whereas weather exposure and blowfly infection accounted for a relatively high percentage (23%) of fledgling mortalities at Sandilands PF. Unlike previous years, we tracked at least one (total = 6) nestling or young fledgling at each site to a garter snake (i.e., inside the snake), possibly reflective of the warmer, dryer early spring weather. Consistent with 2011, 30% of radio-marked females nested in older forest stands traditionally not considered GWWA habitat, and fledged family groups moved into and spent much of the post-fledging period in those older forest areas. Early findings from this project have been disseminated in 2 peer reviewed scientific journal articles and 2 more are currently in review. Detailed analyses for manuscripts about transmitter effects, population dynamics, micro- and macro-scale habitat associations, nest-site choice, parental care of fledglings, and interesting natural history observations are all underway.
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    DEMOGRAPHIC RESPONSE OF GOLDEN-WINGED WARBLER TO HABITAT MANAGEMNET ACROSS A CLIMATE CHANGE GRADIENT IN THE CORE OF THE SPECIES' RANGE: 2013 SUMMARY REPORT
    (2013-12-31) Streby, Henry M; Peterson, Sean M; Kramer, Gunnar R; Andersen, David E
    No new data were collected for this project during 2013 but the RWO was extended into 2014 to support graduate student Sean Peterson during thesis completion and manuscript preparation. That thesis was successfully defended in November 2013, and the final thesis will be submitted to the University of Minnesota in early 2014 and disseminated to all cooperators as a Final Report for this project in 2014 along with all other published products. This 2013 annual report summarizes completed products and plans for additional data analysis, manuscript preparation, and publication in refereed outlets. So far we have produced 11 manuscripts from this project, of which 4 are published, 1 is in press, 4 are in review or revision, and 2 will be submitted for review in January 2014. We are organizing data and conducting analysis for 5 additional manuscripts. A second graduate student, Gunnar Kramer (supported on a separate RWO) will produce 2 of those manuscripts as part of his thesis. During 2013, we presented results from this project in 8 presentations; 5 at professional conferences, 2 at public venues, and 1 at a university. We have scheduled 2 additional professional presentations for 2014.
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    Raw Light-Level Geolocator Data from Golden-Winged Warblers Breeding at Three Sites in North America
    (2016-11-22) Kramer, Gunnar R; Streby, Henry M; Peterson, Sean M; Lehman, Justin A; Buehler, David A.; Wood, Petra B; McNeil, Darin J; Larkin, Jeffrey L; Andersen, David E; gunnarrkramer@gmail.com; Kramer, Gunnar R
    21 raw light-level data files (.lig) from geolocators (Biotrak, Wareham, UK; model ML6240, 2-min light-sampling regime) deployed on 20 individual Golden-winged Warblers from three breeding locations in North America. These data were collected to provide information on the migration routes and timing, and nonbreeding locations of individuals from these populations to inform conservation and management strategies. These data are being released following the publication of these findings.