Your SlideShare is downloading. ×
Population Ecology
Upcoming SlideShare
Loading in...5
×

Thanks for flagging this SlideShare!

Oops! An error has occurred.

×
Saving this for later? Get the SlideShare app to save on your phone or tablet. Read anywhere, anytime – even offline.
Text the download link to your phone
Standard text messaging rates apply

Population Ecology

1,665

Published on

Published in: Technology, Education
0 Comments
0 Likes
Statistics
Notes
  • Be the first to comment

  • Be the first to like this

No Downloads
Views
Total Views
1,665
On Slideshare
0
From Embeds
0
Number of Embeds
0
Actions
Shares
0
Downloads
25
Comments
0
Likes
0
Embeds 0
No embeds

Report content
Flagged as inappropriate Flag as inappropriate
Flag as inappropriate

Select your reason for flagging this presentation as inappropriate.

Cancel
No notes for slide

Transcript

  • 1. Today’s Lab: Last practical Revised syllabus No lab next week Species interaction lab: 9:30 am, Saturday July 18th Due July 18th: Wiki & pre-lab Population Ecology worksheet - due by Monday
  • 2. Species interaction lab http://natl.ifas.ufl.edu/ http://maps.google.com/maps?f=d&source=s_d&saddr=University+of+Fla&daddr=29.633289,-82.367206&hl=en&geocode=FahVxAEdfoMX-w%3B&mra=dme&mrcr=0&mrsp=1&sz=16&rto
  • 3. How to edit • How to edit – http://en.wikipedia.org/wiki/How_to_edit – http://en.wikipedia.org/wiki/Wikipedia:Tutorial • Create an ACCOUNT – http://en.wikipedia.org/w/index.php?title=Special:UserLogin&type=signup • Play in the SANDBOX – http://en.wikipedia.org/wiki/Wikipedia_talk:Sandbox • How to upload pictures – http://en.wikipedia.org/wiki/Wikipedia:Uploading_images – Need to make 10 edits and be active for 4 days to upload pictures – Picture upload wizard (once you are autoconfirmed) – http://en.wikipedia.org/wiki/Wikipedia:Images_for_upload/Wizard/Autoconfirmed
  • 4. Human Population Clock • http://www.census.gov/ipc/www/popclockworld.html
  • 5. Exponential Growth Curve
  • 6. Exponential Growth Curve Growth rate = dN/dt = rmaxN
  • 7. Reproductive Capacity of the Housefly (Musca domestica) Generation Number • 120 2 7,200 3 432,000 4 25,920,000 5 1,555,200,000 6 93,312,000,000 7 5,598,720,000,000
  • 8. Logistic Growth Curve K−N G = rmaxN  Equilibrium  K  G = growth rate Exponential rmax= intrinsic rate of increase Lag N = population size K = carrying capacity
  • 9. Examples of Density-dependent Factors
  • 10. Examples of Density-dependent Factors • Intra-specific • competition Within species competition for limited resources • Predators • Pathogens
  • 11. Population cycles in snowshoe hare and lynx
  • 12. St. Matthew Island reindeer Source: D.R. Klein (1968) http://dieoff.org/page80.htm
  • 13. Human population growth is an exponential growth phase WHY?
  • 14. Total births Total elderly
  • 15. Immigration Emigration
  • 16. Total population http://www.worldmapper.org/textindex/text_index.html ∆N = (births + immigrants) - (deaths + emigrants)
  • 17. Human appropriation of photosynthesis
  • 18. http://www.earthday.net/footprint/index.html The average American’s energy use is equal to the consumption of •2 Japanese 32 Indians •6 Mexicans 140 Bangladeshis 284 Tanzanians •13 Chinese 372 Ethiopians
  • 19. By 2015 nearly half of the world's population - more than three billion people - will be in countries lacking sufficient water
  • 20. Late Pleistocene Extinctions – Pleistocene & S America 13,000 years ago, N extinction Gomphothere
  • 21. Sixth extinction Golden Toad was last seen on May 15, 1989. Human action has transformed between one-third and one-half of the entire land surface of the earth. We have lost more than one-quarter of the planet's birds, and two-thirds of the Bali tiger - 1937 major marine fisheries are fully exploited, over-exploited or depleted. E.O. Wilson estimated that the planet is losing 30,000 species per year -- 100 to 1000 times the background rate of species extinctions
  • 22. What is the carrying capacity of Earth? What do you think life on earth (including humans) on earth will look like • in 50 years? • In 500 years? • In 5000 years? • In 50,000 years?
  • 23. Demography - age-specific population parameters A. Population Size B. Fertility C. Mortality D. Age structure
  • 24. Age structures of three nations
  • 25. Easter Island
  • 26. • Settled 700-800 AD • Overpopulation in 800-1600ad • 1722 – 1st Europeans • 1860’s slave raids, smallpox introduced, • Tuberculosis, wars • 1774 Captn Cook – statues toppling – All down by 1830’s
  • 27. Human Population Clock – http://www.census.gov/ipc/www/popclockworld.html – How many people were added to the world population during THIS lecture?
  • 28. Computer simulations - Biology Labs Online To study aspects of human population demography and population ecology of sparrows. There are two parts to the worksheet (pg 123-128) Population Demography Population Ecology
  • 29. Due Saturday July 18th Wiki project - turn in list of participants in the group, and any additional information about how the page was edited that is not evident from reviewing the article (before & after) and reading the discussion page. You will receive a grade as a group. Species interaction pre-lab (pgs 153-155)

×