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Warm Up

Warm Up. Shown here is some lichen on a rock . . A. What is lichen? B. What type of biotic interaction would it be classified as? Why? C. What role does it serve in ecological succession?

Thomas
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Warm Up

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  1. Warm Up Shown here is some lichen on a rock . . • A. What is lichen? • B. What type of biotic interaction would it be classified as? Why? • C. What role does it serve in ecological succession? Once you’ve answered the questions above, sign up for a biome to do your homework on – the sign up is on the front board on the clipboard

  2. What Shapes an Ecosystem? Chp 4-2

  3. How do abiotic factors influence biotic?

  4. Niche vs. habitat Habitat the address Niche the role

  5. Biotic Interactions Competition & the Competitive Exclusion Principle

  6. Biotic Interactions Predation (+/-)

  7. Symbiotic Biotic Interactions Mutualism (+/+)ant/catepillar Commensalism (+/0) Parasitism (+/-) (how’s this different from predation?)

  8. Succession • Orderly change over time of natural species replacement in a community or ecosystem

  9. Succession communities: 3. Climax community 2. Intermediate species • Pioneer • species

  10. Pioneer species: • Lichens (algae & fungi) break apart rock to make soil • Grasses • Annual flowers • Mosses

  11. Climax Community: final set of organisms suited to that climate

  12. Primary 1st time plants or animals are established New island Volcanoes Glaciers Bare soil, rock Secondary After a “blowout” Re-establish a community Already had living organisms Fire, flood, human disruption Types of Succession

  13. New island= Primary Succession

  14. Secondary Succession will follow!

  15. Primary Or Secondary?

  16. BOTH PRIMARY & SECONDARY have these Succession communities: 3. Climax community 2. Intermediate species • Pioneer • species

  17. San Diego Succession

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