1. Food Chains Food Webs Energy Pyramids

2. Autotrophs: Organism that makes own food
Heterotrophs: Organism that consumes other organisms

3. Producer Herbivore Omnivore Carnivore Also known as primary producers
An organism that primarily consumes producers
Also known as primary consumers
Omnivore
An organism that can consume either primary producers or primary consumers
Carnivore
An organism that primarily consumes primary consumers
Also known as secondary consumers

4. Decomposers
An organism that consumes dead organisms, and, in doing so, carry out the natural process of decomposition
Also can be scavengers (animal decomposers)
or detritivores (plant decomposers)

5. Specialists Generalists
consumers that primarily eat one specific organism or a very small number of organisms
Generalists
consumers that have a varying diet

6. Energy Flow Food chains and food webs
Each step in a food chain or food web is called a trophic level

7. Food Chains

8. Food Web

9. Three types of ecological pyramids
Energy Pyramid
Three types of ecological pyramids
Pyramid of Energy
Pyramid of Biomass
Pyramid of Numbers

10. Energy Pyramids
Indicates the total amount of energy present in each trophic level
Only 10% of the overall movement of potential energy is transferred to the next tropic level
energy transferred
energy
lost

11. Biomass Pyramids
Indicates the total dry mass of the organisms in each trophic level
Thus an enormous mass of grass is required to support a smaller mass of gazelle, which in turn would support a smaller mass of lions.
tertiary
consumers
secondary
primary
producers
75 g/m2
150g/m2
675g/m2
2000g/m2

12. Ecological Pyramids
tertiary
consumers
secondary
primary
producers 5
5000
500,000
5,000,000
Shows the number of organisms in each trophic level
the higher up one goes, fewer organisms there are