Basics
Bald Eagles are typically called
Top Predators
What was reintroduced to Yellowstone to restore it?
Gray Wolf
First Level of the Pyramid
Arrows in a food chain show the...
Energy Flow
Extinction or Over population
What are the different tiers in the pyramid called?
Trophic Levels
When the predators returned to Yellowstone, this herbivore popoulation decreased.
Primary Consumers
Only this percentage of energy moves from one level too another.
10%
Species that enters an ecosystem and causes harm
Invasive Species
This occurs when predators are removed
Top-down Cascade
The recovery of willow trees in Yellowstone helped this animal build its home.
Beaver
These consumers eat the herbivores
Secondary Consumers
Most energy is lost as...
Heat
Predator disappears, Herbivores may over eat food, this is known as..
Overgrazing
Total mass of organisms living in an area
Biomass
Sea Otters protect kelp forest by eating...
Sea Urchins
These organism break down dead matter and recycle nutrients
Decomposers
This diagram shows more complex way of how the food chain functions
Food Web
Species that has a disproportionally large effect on the ecosystem
Keystone Species.
Energy decreases as it moves up trough the levels
10% Rule
Sharks maintain seagrass by eating this plant eating fish...
Dugongs
Organism that feed on dead matter by chewing it
Detritivores
Total energy available after the next level
Ecological Efficiency
When one change causes an effect across all levels.
Ecological Ripple Effect