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Ecology

Ecology. What is Ecology?. The scientific study of organisms & how they interact with their environment. Organisms & their Environment. Niche : the role an organism plays in its environment For example, fungi are decomposers in their environment. Habitat : the place an organism lives.

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Ecology

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  1. Ecology

  2. What is Ecology? The scientific study of organisms & how they interact with their environment

  3. Organisms & their Environment • Niche: the role an organism plays in its environment • For example, fungi are decomposers in their environment. • Habitat: the place an organism lives

  4. The Non-Living Environment • Abiotic Factors: the non-living parts of an organism’s environment • For example, precipitation Even though they aren’t living, abiotic factors still affect organisms’ lives!

  5. The Living Environment • Biotic Factors: all of the living organisms that inhabit an environment • For example, plants & animals All organisms depend on others, directly or indirectly, for food, shelter, reproduction, or protection.

  6. Abiotic (A) or Biotic (B)? Biotic

  7. Abiotic (A) or Biotic (B)? Abiotic

  8. Abiotic (A) or Biotic (B)? Abiotic

  9. Abiotic (A) or Biotic (B)? Biotic

  10. Abiotic (A) or Biotic (B)? Biotic

  11. Ecological Levels of Organization Ecologists have organized the interactions an organism takes part in into different levels according to complexity.

  12. Levels you’ve studied before: Atom  Molecule  Gene  Chromosomes  Organelles  Cells  Tissues  Organs  Organ Systems

  13. 1st Level of Organization Organism: an individual living thing that is made of cells, uses energy, reproduces, responds, grows, & develops

  14. 2nd Level of Organization Population: a group of organisms, all of the same species, which interbreed and live in the same place at the same time

  15. 3rd Level of Organization Biological Community: all the populations of different species that live in the same place at the same time

  16. 4th Level of Organization Ecosystem: populations of plants and animals that interact with each other in a given area with the abiotic components of that area

  17. 5th Level of Organization Biome: group of ecosystems that have the same climate and dominant communities Rainforests Deserts

  18. 6th Level of Organization Biosphere: the portion of Earth that supports life Life is found in air, on land, & in fresh & salt water!

  19. Levels of Organization

  20. What level of organization? Organism Population Community Ecosystem Biome Biosphere Organism

  21. Organism Population Community Ecosystem Biome Biosphere Community

  22. Organism Population Community D. Ecosystem E. Biome F. Biosphere Population

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