1 / 16

Species Interactions: The Good, the Bad, and the Ugly

Species Interactions: The Good, the Bad, and the Ugly. Types of species interactions. Positive Negative N eutral. Positive species interactions. Mutualism Both species benefit by interacting with each other. Ant-Acacia mutualism. Mutualism. http:// www.australiangeographic.com.au /news/.

lynley
Download Presentation

Species Interactions: The Good, the Bad, and the Ugly

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 Interactions:The Good, the Bad, and the Ugly

  2. Types of species interactions • Positive • Negative • Neutral

  3. Positive species interactions • Mutualism • Both species benefit by interacting with each other Ant-Acacia mutualism

  4. Mutualism http://www.australiangeographic.com.au/news/

  5. Mutualism http://coglab.hbcse.tifr.res.in/teacher-resources/

  6. Mutualism http://mathotter.wordpress.com

  7. Mutualism

  8. Negative species interactions • One species benefits while the other species is harmed http://www-rohan.sdsu.edu

  9. Negative interactions (herbivory) http://en.wikipedia.org/wiki/Herbivore

  10. Negative interactions (competition)

  11. Negative interactions Nectar Robbing Strangler Fig

  12. Neutral species interactions • Commensalism • One species benefits while the other is unaffected

  13. Plant-bacteria-herbivore experiment • Do herbivores prefer plants with rhizobia or plants without rhizobia?

  14. Materials • 10 legume plants (such as beans, peas, clover), in 10 separate pots • Rhizobia (bacteria) inoculant (purchase online) • 20 slugs or other insect herbivores (aphids, beetles, caterpillars) • Old fish tank or large plastic bin, screen or netting to put over top

  15. Instructions • Plant legumes 3 weeks prior to conducting experiment. Inoculate half of the 10 plants with rhizobia bacteria. + rhizobia - rhizobia

  16. Instructions 2. Once plants are mature, put them all into an old fish tank or clear plastic bin and put 2 herbivores on the soil surface in each pot. Make sure pots are close enough to touch. 3. After 1-2 days, estimate the percent of damage to each leaf 4. Record data and analyze results (graphing activity)

More Related