Intro notes ecology
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Intro notes ecology

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    Intro notes ecology Intro notes ecology Presentation Transcript

    • Warm up for today:• Read about autotrophs and heterotrophs on pages 41 & 42. Complete the “Concept Map” from the board.
    • Ecology
    • Flow of Energy • Sunlight is the main source of energy for all life on earth. • Producers –either make their own food from the sun or chemicals (mostly from the sun). –Autotrophs & Chemotrophs
    • Consumers• Heterotrophs: Organisms that rely on other organisms for food and energy –Herbivores: eat plants –Carnivores: eat other animals –Omnivores: both plants and animals
    • Consumers – Detritivores: feed on animal remains and other dead matter – Decomposers: break down organic matter
    • Feeding Relationships• Food chains –Show the one way flow of energy in an ecosystem• Food Webs –Describes all of the possible feeding relationships in an ecosystem
    • Trophic Levels• Each step in the food chain or food web is called a trophic level.• Ecological pyramid –Shows the relative energy movement through the environment. –Only 10% is available to move onto the next level
    • Chapter 2 Principles of Ecology 2.2 Flow of Energy in an Ecosystem Ecological Pyramids  A diagram that can show the relative amounts of energy, biomass, or numbers of organisms at each trophic level in an organism