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Ecological Model

Describing the �Inter-relations of �the Natural World.

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  • Native Cultures emphasized the relationship between things in nature.
  • Developed basic �Natural Laws
    • All living things are interconnected.
    • The natural world is in a constant state of change.
    • Understanding change (rather than controlling it) can give humans power while maintaining balance.

Native Science

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  • Ecology: �Study of the interactions of living organisms with one another and with their physical environment.

Ecology

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  • Organism: Defined as something that meets the criteria for a “living thing”.
  • Criteria:
    • Has genetic material
    • Is made up of one or more cells.
    • Uses energy
    • Reproduces
    • Others.

Organism

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  • Population: is a group of organisms of the same species living together in the same place and interbreeding.

Population

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  • Habitat: the place where a particular population of a species lives.

Habitat

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  • Community: In biology, a community is when different populations (species) live together in a habitat.

Community

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  • Ecosystem: consists of a community and all the physical aspects of its habitat (such as soil, water, weather)
  • Also called: Ecological System

Ecosystem

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  • An ecosystem has factors: things that affect it. 2 types:
  • Biotic factors: the organisms in the habitat.
  • Abiotic factors: the non-living things that affect the ecosystem such as: physical structures, water, soil, etc.

Biotic and Abiotic Factors

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  • Biome: is what you call a major community or communities over a large area.

Biome

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Biosphere

  • Biosphere: is the sum of ecosystems that make up the earth.
    • Closed system (apart from sun & inside the earth)
    • Self-regulating: controls itself.

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Ecological Model

  • Ecological Model:�Is a picture we can use on how an organism is inter-related to the living and non-living things around them.

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