1 / 8

Species Area Curves

Species Area Curves. Species area curve predicts that larger islands will have more species than smaller islands. S= cA z where S = number of species c = a constant measuring the number of species per unit area A = area of island (in square units)

harrison-patton
Télécharger la présentation

Species Area Curves

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. Species Area Curves • Species area curve predicts that larger islands will have more species than smaller islands. • S=cAzwhere • S = number of species • c = a constant measuring the number of species per unit area • A = area of island (in square units) • z = a constant measuring the slope of the line relating to S and A

  2. Island Biogeography • Number of species (on a plot or island) is a balance between immigration and extinction. • If immigration exceeds extinction, then the number of species will increase. • Number of species usually at equilibrium

  3. Island Biogeography • Immigration rates on islands are related to the distance from the mainland. • Close islands have greater immigration rates than far islands • Extinction rates on islands are related to the size of the island. • Extinction rates are greater for small islands than for large islands

  4. Island Biogeography

  5. Bryozoan Aquatic Colonial Animals. Mostly marine, but some freshwater. Reproduce by budding Corals are also colonial animals. Individual animals are called zooids. Colony is situated in a gelatinous mass that is firm, but 99% water.

  6. http://www.civgeo.rmit.edu.au/bryozoa/default.html

  7. Zooid Anatomy

More Related