1 / 31

POPULATION

POPULATION. 3. 4. POPULATIONS: Distribution. 2. 1. POPULATIONS: Abundance (including Density). 5. POPULATIONS: Dispersal. POPULATIONS: Age Structure. Populations: Age Structure. White Oak. Populations: Age Structure. Fremont Cottonwood. Age Structure: Large Cactus Finch.

fauve
Download Presentation

POPULATION

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. POPULATION 3 4

  2. POPULATIONS: Distribution 2 1

  3. POPULATIONS: Abundance (including Density) 5

  4. POPULATIONS: Dispersal

  5. POPULATIONS: Age Structure

  6. Populations: Age Structure White Oak

  7. Populations: Age Structure Fremont Cottonwood

  8. Age Structure: Large Cactus Finch

  9. Population Age Structure: Survivorship (lx) 8

  10. Population Age Structure: Reproduction R0: Net Reproductive Rate T: Generation Time

  11. Population Age Structure: Growth Rates Continuous Reproduction Non-Overlapping Reproduction r = Per Capita Rate of Increase = Geometric Rate of Increase r > 0: Increasing > 1 : Increasing r < 0: Decreasing < 1: Decreasing

  12. Patterns of Survivorships Fig. 10-18 in Molles 2006

  13. Type I Survivorship Curve 12 Fig. 10-14 in Molles 2006

  14. Type II Survivorship Curve 9 Fig. 10-16 in Molles 2006 10

  15. Type III Survivorship Curve 11 Beeplant(Cleome) Fig. 10-17 in Molles 2006

  16. Collecting Data for Analyzing Age Structure: Cohort Life Table Analysis Cohort: All individuals born at the same time

  17. Cohort Lifetable: Monitor all individuals born in a given year until their death Age (Years)Number of Survivors 0-1 1,000 1-2 800 2-3 640 3-4 500 4-5 380 5-6 152 6-7 60 Cohort: A group of individuals of the same age

  18. Problems with Cohort Life Tables?

  19. Collecting Data for Survivorship Curves II: Static Life Table Analysis 15 16 Adolph Murie 14

  20. Static Life Table Collect age data on individuals at time of death Fig. 10.14 in Molles 2006

  21. Survivorship Curve for Dall Sheep (Based on Static Life Table Analysis) Fig. 10-14 in Molles 2006

  22. Assumption of Static Life Table Analysis: Proportion of skulls in each age class = Proportion of individuals who die in each age class

  23. Combining Life Tables with Fecundity Schedules (Continuous Reproduction) Table 10.2 in Molles 2006 (continued)

  24. Useful Life Table Notation x: Age in years dx:Number of individuals dead in a given time interval nx: Number of individuals surviving to beginning of x lx: Proportion of original individuals surviving to beginning of x mx: Number of individuals produced per individual during time period x

  25. Indices of Population Growth Ro: Net Reproductive Rate (Animals: Total # females produced per female in one lifetime) (Ro < 1, population size is decreasing) (Ro = 1, population size is not changing) (Ro > 1, population size is increasing) Ro = ∑ lxmx

  26. Indices of Population Growth T: Generation Time (Mean age of a Female when Giving Birth) ∑ x lx mx T = __________ Ro

  27. Indices of Population Growth r: Per Capita Rate of Increase (= birth rate – death rate) (If r < 0, population is decreasing) (If r = 0, population is not changing) (If r > 0, population is increasing) ln Ro _______ r = T

  28. Common Mud Turtle (K. subrubrum)

  29. ln Ro _______ r = T Table 10.2 in Molles 2006 (continued)

  30. 1 http://www.desertusa.com/mag05/nov/images/no4creosote.jpg 2 http://www.swsbm.com/Maps/Larrea_tridentata.gif 3 http://www.sourcepointherbs.org/larrea.JPG 4 http://www.texasbeyondhistory.net/waxcamps/images/creosote-lg.jpg 5 http://www.mobot.org/jwcross/duckweed/graphics/frog_in_ duckweed.gif 6 http://canalphotos.org/8-28_canal_duckweed_2_PS_rz.jpg 7 http://www.highmars.org/niac/images/dweed02.jpg 8 http://abell.as.arizona.edu/~hill/4x4/gila104.gif 9 http://www.science.smith.edu/stopoverbirds/birdpixs/images/ American%20Robin.jpg

  31. 10 http://sdakotabirds.com/species/photos/white_crowned_sparrow.jpg 11 http://www.boxerwood.com/PHOTO%20TOUR/images/ julyblooming/cleome.jpg 12 http://www.princewilliamsoundcruises.com/images/dall-sheep.jpg 13 http://www.ci.el-paso.tx.us/green_infrastructure/_images/image1b.jpg 14 http://www.texas-hunts.com/Armenian%20Red%20Sheep%201.JPG 15 http://www.bucktrack.com/Alaska_Brooks_Range_Traverse/Photos/ Dall_Sheep_Skull.jpg 16 http://www.atpm.com/10.11/ireland/images/glendalough-cemetary-420.jpg 17 http://www.igallopon.com/images/2006/54/t4.jpg 18 http://www.v-liz.com/galapagos/espanola/gardne~1/finch1.jpg 19 http://www.hiltonpond.org/images/TurtleMudAnterior01.jpg

More Related