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Winter Range of the slate-colored Junco

Winter Range of the slate-colored Junco. Has it change and if so why?. Thesis Has climate change affected the range of the Dark-eyed Junco ( Junco hyemalis ) Client and Team Me (and lots of other people) Advisors Dr. Bobbi Low Dr. Paul Webb Background. Junco hymalis

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Winter Range of the slate-colored Junco

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  1. Winter Range of the slate-colored Junco Has it change and if so why?

  2. Thesis • Has climate change affected the range of the Dark-eyed Junco (Junco hyemalis) • Client and Team • Me (and lots of other people) • Advisors • Dr. Bobbi Low • Dr. Paul Webb • Background

  3. Junco hymalis • 5 different subspecies • breed in the boreal forests of North • America and winters mainly in the • United States

  4. Birds per 100 party hours Audubon Christmas Bird Count • Wintering range according the the Christmas Bird Survey • Very common in museum collections • Very common in banding surveys • 1.5 million dark-eyed juncos banded since 1914

  5. Thesis • Has climate change affected the range of the Dark-eyed Junco (Junco hyemalis) • Client and Team • Me (and lots of other people) • Advisors • Dr. Bobbi Low • Dr. Paul Webb • Background • My Problem and Approach

  6. Three questions • Has the sex-distribution and winter range of the slate-colored Junco changed over the past century? • If a shift has occurred can a correlation be drawn between climate change and any demographic shift? • If there is evidence supporting a correlation, does it support a 27-year-old regression model used to predict slate-colored Junco range due to climate. (Ketterson and Nolan 1976)

  7. Approach • Collect data on the sex, date, and place of collection for slate-colored juncos across North America • Caveats • The sex of the individuals must be know • The date of collection must be between 1 December and 28 February • The place of collection must be known • Analyze data for a trend • Compare any trend with climate change and see if there is a correlation • Compare any correlation to expected effect

  8. Thesis • Has climate change affected the range of the Dark-eyed Junco (Junco hyemalis) • Client and Team • Me (and lots of other people) • Advisors • Dr. Bobbi Low • Dr. Paul Webb • Background • My Problem and Approach • Products

  9. Products • Thesis • Bound-black-book • Journal publication • Spring-board to job and PhD

  10. Thesis • Has climate change affected the range of the Dark-eyed Junco (Junco hyemalis) • Client and Team • Me (and lots of other people) • Advisors • Dr. Bobbi Low • Dr. Paul Webb • Background • My Problem and Approach • Products • Timeline, Budget, and Works Cited

  11. Timeline • Literature review • ongoing • Have all data collected by beginning of Fall term 2003 • ~2500 records have already been collected from museums with online collections • Currently working on a proposal to submit to the USGS for access to their data set (~1.5 million) • Have data analyzed by end of Fall term 2003 • Have first draft completed by February 2004 • Have final draft completed and bound by the end of Winter term 2004 • Potentially unrealistic

  12. Budget

  13. Works Cited • Audubon Christmas Bird Count. http://www.mbr-pwrc.usgs.gov/bbs/cbc.html (Visited April 16, 2003) • Ketterson, E. D. and V. Nolan (1976). "Geographic Variation and Its Climatic Correlates in Sex-Ratio of Eastern-Wintering Dark-Eyed Juncos (Junco hyemalis hyemalis)." Ecology57(4): 679-693. • USGS Bird Banding Laboratory http://www.pwrc.usgs.gov/bbl/ (Visited April 16, 2003)

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