Download Ecology- Energy Flow

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 pyramidOnly 10% of energy is passed to next level
Objective: To trace flow of energy through living
things
Biomass pyramidLiving tissue within given trophic level
(shows food available for each level)
Objective: To trace flow of energy through living
things
Pyramid of numbersNumber of individuals
at each trophic
level (not always a
pyramid shape--- a
tree is one
organism while a
shrub is one
organism)