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Exploring Ecosystems: Interactions in Nature

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  1. Chapter 11 Section 1 Living Things and the Environment

  2. Ecology • The study of how living things interact with each other and with their environment.

  3. Ecosystem • The living and the nonliving things in an area.

  4. Habitat • An environment that provides the needs that organisms need to live, grow and reproduce.

  5. Abiotic Factors • The nonliving part of a habitat.

  6. 1. Water - all life processes depend on water.

  7. 2. Soil - determines the types of plants that can live in a certain location.

  8. 3. Sunlight - provides energy for all living things.

  9. 4. Temperature - determines the organisms that can live there.

  10. 5. Oxygen - most living things require it to live.

  11. Biotic Factors • The living things in the environment. Ex: plants and animals.

  12. Review • A habitat is an environment that provides the things a specific organism needs to live, grow, and reproduce. • An organism is a living thing. • There are two components of a habitat: • Abiotic Factors • Biotic Factors • Abiotic factors are nonliving parts of an organism’s habitat. • Biotic Factors are the parts of a habitat that are living, or were once living, and which interact with an organism.

  13. Organization of an Ecosystem • Most organisms do not live all alone in their habitat. Instead, organisms live together in populations and communities that interact with abiotic factors in their ecosystem.

  14. Organism • An organism is an individual living thing (example: prairie dog)

  15. Population • All the members of one species that live in the same place at the same time. (example: prairie dog town)

  16. Community • All of the populations of different species that live in the same place (all biotic factors).

  17. 4. Ecosystem • All of the biotic and abiotic factors in a particular area.

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