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Unit 2 – Ecology and the Enviroment

Unit 2 – Ecology and the Enviroment. Levels of Organization in Ecology. atom m olecule o rganelle c ell t issue organ o rgan system o rganism p opulation c ommunity e cosystem. Wikimedia Commons free use from NASA. Ecosystem.

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Unit 2 – Ecology and the Enviroment

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  1. Unit 2 – Ecology and the Enviroment

  2. Levels of Organization in Ecology • atom • molecule • organelle • cell • tissue • organ • organ system • organism • population • community • ecosystem Wikimedia Commons free use from NASA

  3. Ecosystem

  4. A biome is a group of ecosystems with similar climate, plant and animal species.

  5. Biotic Factor Biotic = living things life Such as: animals, plants, bacteria, fungus, protists, etc.

  6. AbioticFactors A bio tic Not Life Non living things such as: Rocks, water, temperature, soil, light. Etc. There are more abiotic factors that there are biotic factors!!!

  7. Populations vs. Communities • A population is a group of organisms, all of the same species, which interbreed and live in the same area at the same time • community - • interacting populations • All the living things that • live together.

  8. Symbiosis

  9. Mutualism

  10. Commensalism

  11. Parasitism

  12. Predation

  13. Carrying Capacity

  14. Only 10% of energy is transferred to the level above it. Trophic Level Position that organisms occupy on the food chain or each step in the food chain Energy travels up the trophic levels

  15. Ecological Pyramid

  16. Food Web

  17. Did you know? • The directions of the arrows in a food web show which way the energy flows…not who eats who.

  18. Producer

  19. Auto troph Self feeding Autotroph • Producers are usually plants but not always!! They just have to make food from the sun (autotroph). Phytoplankton Solar powered Sea Slug

  20. Decomposers • Decomposers are mainly bacteria & fungi. They break down dead organisms • Without them, we would be covered in dead organisms in no time at all!!!

  21. Consumer • Consumers are heterotrophs (get energy from eating other organisms) Hetero troph Different feeding

  22. Primary Consumer

  23. Secondary Consumer Lion - Secondary consumer after eating the goat

  24. Tertiary Consumer • Tertiary consumers eat secondary consumers. Tertiary consumer after eating the jackal.

  25. Herbivore

  26. Omnivore

  27. Carnivore

  28. Detritivore

  29. Limiting Factors

  30. Ecosystem Sustainability

  31. Ecological Succession

  32. Primary Succession

  33. Secondary Succession

  34. Climax Community • Secondary Succession ends in the climax community, which is the most stable community and will remain until the next disturbance. • In the Colorado mountains, the climax community is the pine forest!

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