Objective: To trace flow of energy through living things

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Presentation transcript:

Objective: To trace flow of energy through living things Ecology- Energy Flow Objective: To trace flow of energy through living things

Objective: To trace flow of energy through living things Producers/Autotrophs: use energy from sun/chemicals to produce food. From sunlight—photosynthesis From chemicals—Chemosynthesis

Objective: To trace flow of energy through living things Consumers/Heterotroph: rely on other organisms for their energy and food supply Herbivores- eat plants Carnivores- eat meat Omnivores- eat plants and meat Detritivore- eat plant and animal remains (called detritus) Earthworms, snails, crabs Decomposers- break down organic matter Fungi and bacteria

Objective: To trace flow of energy through living things Energy Flow Food chain and Food web track energy flow Webs are made up of several food chains

Objective: To trace flow of energy through living things Trophic level: each step in a food chain 1st producers 2nd consumers 3rd consumers 4th consumers All depend on the trophic level below them.

Objective: To trace flow of energy through living things Ecological pyramid- Shows amounts of energy or matter contained in each trophic level Energy pyramid- Only 10% of energy is passed to next level

Objective: To trace flow of energy through living things Biomass pyramid- Living tissue within given trophic level (shows food available for each level)

Objective: To trace flow of energy through living things Pyramid of numbers- Number of individuals at each trophic level (not always a pyramid shape--- a tree is one organism while a shrub is one organism)