Loading presentation...

Present Remotely

Send the link below via email or IM

Copy

Present to your audience

Start remote presentation

  • Invited audience members will follow you as you navigate and present
  • People invited to a presentation do not need a Prezi account
  • This link expires 10 minutes after you close the presentation
  • A maximum of 30 users can follow your presentation
  • Learn more about this feature in our knowledge base article

Do you really want to delete this prezi?

Neither you, nor the coeditors you shared it with will be able to recover it again.

DeleteCancel

Make your likes visible on Facebook?

Connect your Facebook account to Prezi and let your likes appear on your timeline.
You can change this under Settings & Account at any time.

No, thanks

How do ecologists study populations?

No description
by

Luke Gardner

on 18 October 2013

Comments (0)

Please log in to add your comment.

Report abuse

Transcript of How do ecologists study populations?

How populations grow and limits to growth.
What happens during exponential growth?
What factors effect population growth?
How do ecologists study populations?
Factors that can effect population size are birthrate, death rate, and the rate at which individuals enter or leave a population. For example if there are no of few gazel in the savana then animals like cheetas will not increase any more in population but may even decrease.
Under ideal conditions with unlimited resources a population will grow exponentially.
Researchers study populations geographic range, density and distribution, growth rate, and age structure. These sicentist are the same scientist that also work on the zooinverse project.
What is logistic growth?
Logistic growth occurs when a population's growth slows then stops, following a period of exponential growth.
What factors determine carrying capacity?
Acting seperately or together, limiting factors determine the carrying capacity of an environment for a species.
What limiting factors depend on population density?
Density-dependent limiting factors include competition, predation, herbivory, parasitism, disease, and stress from overcrowding.
What limiting factors do not typically depend on population density?
Unusuall weather such as hurricanes, droughts, or floods, and natural disasters such as wildfires, can act as density-independent limiting factors.
Full transcript