Trophic Levels
The first trophic level
What are producers
Sunflower
What is a producer
Amount of energy passed down each level
What is 10%
Amount of biomass lost each trophic level
What is 90%
Animals in this trophic level are at highest risk for extinction
What are apex predators
The second trophic level
What are primary consumers
Lion
What is an apex predator
The provider or start for all energy on Earth
What is the sun
This trophic level has the highest biomass
What are producers
An organism that holds an ecosystem together in theory
What is a keystone species
The third trophic level
What are secondary consumers
Rabbit
What is a primary consumer
What is metabolic heat loss
Biomass is the total mass of all these things
What are dead and alive organic tissue
These level organisms are usually keystone species
What are apex predators
The fourth trophic level
What are tertiary consumers
Rattle snake
What is a tertiary consumer
By the fifth trophic level this much energy remains
What is .01%
The unit biomass is measured in
What is grams or calories per square meter (g/m^2 or cal/m^2)
This organism can act as both a producer and decomposer
What are bacteria
The fifth trophic level
What are apex predators
Frog
What is a secondary consumer
Energy returns to the start of the trophic level with the help of this
What are decomposers
Ecosystem with the highest overall biomass
What are tropical rainforests
This is the person who created the theory of keystone species
Who is Robert T. Paine