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Ecology

Chapter 4 The study of how organisms interact with one another and with the abiotic components in an area (ecosystem). Ecology. Ecosystem = a community of different organisms interacting…. Levels of organization. earth. ecosphere. ecosystems. communities. populations. organisms.

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Ecology

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  1. Chapter 4 The study of how organisms interact with one another and with the abiotic components in an area (ecosystem). Ecology Ecosystem = a community of different organisms interacting…

  2. Levels of organization earth ecosphere ecosystems communities populations organisms system organ tissue cells molecules atoms

  3. Look at all these ecosytems and ecotones!

  4. Major Components of Freshwater Ecosystems Producers (rooted plants) Producers (phytoplankton) Primary consumers (zooplankton) Secondary consumers (fish) Tertiary consumers (turtles) Dissolved chemicals Sediment Decomposers (bacteria and fungi)

  5. Major Components of a Field Ecosystem Sun Oxygen (O2) Producer Carbon dioxide (CO2) Secondary consumer (fox) Primary consumer (rabbit) Producers Falling leaves and twigs Precipitation Soil decomposers Water Soluble mineral nutrients Fig. 3-10, p. 42

  6. Detritivores Detritus feeders Decomposers Termite and carpenter ant work Carpenter ant galleries Bark beetle engraving Long-horned beetle holes Dry rot fungus Wood reduced to powder Mushroom Time progression Powder broken down by decomposers into plant nutrients in soil Fig. 3-12, p. 44

  7. Main Structural Components of an Ecosystem Abiotic chemicals (carbon dioxide, oxygen, nitrogen, minerals) Heat Solar energy Heat Heat Producers (plants) Decomposers bacteria, fungi) Consumers (herbivores, carnivores) Heat Heat Fig. 3-13, p. 45

  8. Biodiversity Fig. 3-14, p. 45

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