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If you are what you eat, what are you?
producer
detritivore
omnivore
carnivore
herbivore
consumer
decomposer
autotrophheterotroph
CONSUMERS
What are consumers?
sunlight producer consumer 1 consumer 2
Examples: deer, rabbits, cows, mice, lions, humans, hawks, snakes
DECOMPOSERSWhat are decomposers?Examples: bacteria, fungi, insects
sunlight producer consumer 1 consumer 2
consumer 3
decomposer
HERBIVORES
What are herbivores?
Ex. Cows, caterpillars, rabbits
sunlight producer consumer 1 consumer 2
CARNIVORES
What are carnivores?
Ex. tigers, wolves, snakes, hawks
sunlight producer consumer 1 consumer 2
Food Chains & Food Webs
Organisms in ecosystems transfer energy from organism to organism in feeding relationships called trophic levels.
Food Chain Example:
Algae Krill Cod Leopard Killer
Seal Whaleproducer primary
consumerquaternary consumer
tertiary consumer
secondary consumer
-------- herbivore carnivorecarnivorecarnivore
Food Chains & Food Webs
What would happen in this food chain if all the cod were to die?
What would happen to krill if all algae were to die?
Which is more stable, a food chain or a food web? Why?
Ecological Pyramids
Instead of representing trophic levels in a food web, an ecological pyramid can be used.
Ecological Pyramids
1st Trophic Level
2nd Trophic Level
3rd TL
4th TL
5th TL
Algae
Krill
Cod
Leopard Seal
Killer Whale
Ecological Pyramids
Producer
Primary Consumer
Secondary Consumer
Tertiary Consumer
Quaternary Consumer
Algae
Krill
Cod
Leopard Seal
Killer Whale
Pyramid of Energy What happens to the energy as
you go up?
How much energy is lost between levels?
Why?
How much energy is retained?
Ecological Pyramids
What happens to the biomass, numbers,and energy from trophic level to trophic level?