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Comparing Populations

Comparing Populations. Today’s Objectives long-term data sets. Become familiar with exploring Test hypotheses Understand the benefits & limitations. Schedule. Background on long-term data sets MSU Museum Tour & Presentation Test given hypothesis using long-term data set

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Comparing Populations

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  1. Comparing Populations

  2. Today’s Objectiveslong-term data sets • Become familiar with exploring • Test hypotheses • Understand the benefits & limitations

  3. Schedule • Background on long-term data sets • MSU Museum • Tour & Presentation • Test given hypothesis using long-term data set • Groups develop new hypothesis and test

  4. Long-term data sets • Scope global to organismal • Time period centuries to years • Benefits Broad patterns large sample size • Limitations Time, money, organization

  5. Global Long-term data setsAtmospheric carbon dioxide Remote sensing

  6. Global Long-term data sets Ice and Glaciers

  7. Global Long-term data sets Sea levels

  8. Global Long-term data sets Sea surface temperatures

  9. Global Long-term data sets Deforestation in Brazil

  10. Ecosystem level Appalachian Mountains

  11. Community level Kellogg Biological Station, MI

  12. Organismal level Mara hyena project (1988-present) All occurrence sampling of known individuals; study behavioral ecology MSU: Holekamp Research Group

  13. Organismal level Kluane National Park, Yukon Canada - Follow individuals throughout life - 23 years data - 6000+ individuals in pedigree. Behavior Ecology Energetics Evolution MSU/Guelph: McAdams Research Group

  14. Long Term Ecological Research Established in 1980 for long term ecological processes in the US • Primary production • Population Studies • Disturbance Patterns • www.lternet.edu • www.lter.kbs.msu.edu Video: http://www.lternet.edu/ltervideo/?size=full

  15. Dreaming of summer? WWW.KBS.MSU.EDU

  16. Build Your Career @ KBS: • MSU Summer Classes • Internships& Undergraduate Research WWW.KBS.MSU.EDU

  17. Summer Classes in Field Biology • Maximum Class size of 16! • All classes include a hands-on research component • 2010 Summer Classes include: • ZOL 355/355L • PLB 418 • ZOL 440 WWW.KBS.MSU.EDU

  18. Learn and Intern A program ONLY for MSU students that combines a course at KBS with a part-time internship. $3500 scholarship/stipend! Get course credit AND build your resume! WWW.KBS.MSU.EDU

  19. Kellogg Biological Station • WWW.KBS.MSU.EDU • 65 miles from main campus (near Battle Creek)

  20. Interested in animal behavior research?Join the Boughman Lab!We need undergraduate assistants to help with our research projects this spring and summer

  21. At Museum Purpose: get exposure to museum collections that inform long-term data research • ½ class takes tour of collections • ½ class gets presentation on long-term data sets • Groups swap

  22. To the museum! • Bring: • Coursepack pages • Paper, writing utensil • Jacket

  23. Our exploration of long-term data sets Peromyscus maniculatus (deer mouse) • Mostly nocturnal • Breed all year, peak April-August • Food for snakes, owls and weasels • Females very territorial

  24. Peromyscus Sex Ratio • Sex ratio # males: # females Expected is 50% males: 50% females • Why might sex ratio differ from expected? We’ll start by exploring sex ratio in Michigan.

  25. Collecting Data - MaNIS • Follow directions in coursepack • Demo • http://www.screencast.com/users/acrlackey/folders/Jing/media/75fa3fae-422e-4f93-a227-07fc8b5f7269

  26. Collect data from MaNIS Once groups have their data, I’ll show you how to analyze it using a Pivot Table

  27. Pivot Tables

  28. What? • Summarize and analyze large amounts of data in a list or table • (regardless of how you have it organized in your sheet) • For instance…

  29. Create a PivotTable • Choose • Microsoft Office Excel list or database • Select your data range • Easy method is click on the upper left hand corner, hold shift key and click on the lower right hand corner. • Choose the output location • New Worksheet

  30. Choosing the categories • Drag the categories to be either rows or columns. • Don’t worry, play around

  31. Sex Ratio in Michigan • Each group examines sex ratio (males:females) in Michigan • Test difference between observed sex ratio and expected ratio using Chi-square (Demo website calculator) • Observed values come from Pivot Table

  32. Assignment • 1st set of Q/H/P • Chi-square table • Chi-square value, p-value • Stat conclusion • Biol conclusion • 2nd set of Q/H/P • Pick anything. • Need ideas? Think about subspecies, age class, latitude or month.

  33. Next Week • Behavior lab #3 • Pages 17-28

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