1 / 15

Biotic Resistance

Biotic Resistance. What can stop invasive species? Liz Schultheis April 21, 2011. Do you know of any invasive species?. Why do some invaders succeed?. Open habitat – places to grow Available food/resources Can grow better than native species Nothing eats them! No enemies.

kellan
Download Presentation

Biotic Resistance

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. Biotic Resistance What can stop invasive species? Liz Schultheis April 21, 2011

  2. Do you know of any invasive species?

  3. Why do some invaders succeed? • Open habitat – places to grow • Available food/resources • Can grow better than native species • Nothing eats them! No enemies

  4. Why do some invaders fail? • Diversity – lots of competition – no space or resources left • Enemies – diseases, predators, herbivores

  5. Native Blue Crab Likes soft sandy areas Lives in shallow water Prefers ocean water that’s not too salty Invasive Green Crab Introduced from Europe Likes the same areas that the Blue Crab likes Catherine E. deRivera & others 2005

  6. Invasive Green Crab Range Native Blue Crab Range

  7. NORTH # Blue Crabs # Green Crabs SOUTH SOUTH NORTH LOCATIONS

  8. Winner!

  9. N N N N N N N N N N N = invader resource N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N

  10. N N N N N N N N N N P P P P P P P P P P N = invader resource P = native species resource N N N N N N N N N N P P P P P P P P P P N N N N N N N N N N P P P P P P P P P P N N N N N N N N N N P P P P P P P P P P N N N N N N N N N N P P P P P P P P P P

  11. N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N P P P P P P P P P P P P P P P P P P P P P P P P P P P P P P P P P P P P P P P P P P P P P P P P P P N = invader resource P = native species resource Diversity = 1

  12. P P P N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N P P P P P P P P P P P P P P P P P P P P P P P P P P P P P P P P P P P P P P P P N = invader resource P = native species resource Diversity = 3 N N N N N N P P P P

  13. N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N P P P P P P P P P P P P P P P P P P P P P P P P P P P P P P P P P P P P P P P P P P P P P P P P P P N = invader resource P = native species resource Diversity = 3, Fertilized

  14. N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N P P P P P P P P P P P P P P P P P P P P P P P P P P P P P P P P P P P P P P P P P P P P P P P P P P N = invader resource P = native species resource Diversity = 3, Disturbance

More Related