slide1 n.
Download
Skip this Video
Download Presentation
State which species of turtle nests in the greatest numbers on Jupiter Island. (1 mk )

Loading in 2 Seconds...

play fullscreen
1 / 20

State which species of turtle nests in the greatest numbers on Jupiter Island. (1 mk ) - PowerPoint PPT Presentation


  • 68 Views
  • Uploaded on

Happy Wed! 9/8/2010. State which species of turtle nests in the greatest numbers on Jupiter Island. (1 mk ) (b) Compare the distribution of nesting in the three species of turtle along the eastern coastline of Florida. (2 mks ). (a) loggerheads / Caretta caretta 1

loader
I am the owner, or an agent authorized to act on behalf of the owner, of the copyrighted work described.
capcha
Download Presentation

PowerPoint Slideshow about 'State which species of turtle nests in the greatest numbers on Jupiter Island. (1 mk )' - platt


Download Now 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.While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server.


- - - - - - - - - - - - - - - - - - - - - - - - - - E N D - - - - - - - - - - - - - - - - - - - - - - - - - -
Presentation Transcript
slide1

Happy Wed!

9/8/2010

  • State which species of turtle nests in the greatest numbers on Jupiter Island.
  • (1 mk)
  • (b) Compare the distribution of nesting in the three species of turtle along the eastern coastline of Florida. (2 mks)
slide2

(a) loggerheads / Carettacaretta 1

  • (b) all three species nest over the same range of latitudeson the same beaches/areas;density of loggerheads is greatest and leatherbacks is lowest;similar relative densities/numbers on the different beaches / latitudes;all three had most nests on Jupiter;more loggerheads at northern end of range /(Do not accept answers givingaround 28 (°N) / on Melbourne;) the range 26–28 or 26–30.) 2 max
don t forget
Don’t forget...
  • “Exercises” ?s as you read or after we’ve gone over in class
    • Make sure you GET IT
  • “Practice ?s” @ end of chapter— old exam ?s
    • Studying for quizzes/tests!
5 3 2 pop growth curves
5.3.2 Pop growth curves
  • MODEL
    • Change in pop size over time
  • Pop expanding into a habitat offering INITIAL LOW RESISTANCE or LOW LIMITING FACTORS

A-Exp = rapid pop growth rate

B-slowing but still high

C-plateau = pop remains stable w/time;

slight oscillations

5 3 3 phases of pop growth curve details
5.3.3 Phases of pop growth curve…details!

EXPONENTIAL PHASE

  • Low/reduced limiting factors
  • Pop expands exponentially into hab. @ 2n where n= # of generations
  • natality + imm. > mortality + emigr.
  • Note that it does not mean that death/ emigration= 0 !!!
when do you observe exp phase in nature
When do you observe exp. phase in nature?

Pop of germinating annual plants in new season

Bacterial pop @ onset of infection

Succession—any species’ pop entering previously uninhabited area

5 3 3 transition phase
5.3.3 TRANSITION PHASE
  • Resources reduced, become limiting
  • Competition…not all survive
    • NATURAL SELECTION!
  •  lower rate of increase in pop
5 3 3 population plateau
5.3.3 POPULATION PLATEAU
  • Pop remains constant over time/generations
  • Natality + imm = mortality + emig
  • Pop size determined by CARRYING CAPACITY of habitat @ that time
5 3 4 factors limiting pop growth
5.3.4 Factors limiting pop growth
  • With unltd resources, pop would keep increasing…exponentially!
  • REALITY CHECK!
  • Environmental resistance limits it & determines carrying capacity
    • Shortage of food/prey
    • Predation, parasitism
    • Disease
    • Accumulation of waste
    • Shortage of space/territory