Examples
Name a trophic cascade?
The wolves in yellowstone national park.
What is a Trophic Cascade?
Powerful indirect interactions that can control an entire ecosystem.
Producers, primary consumers, secondary consumers, tertiary consumers, apex predators.
The top of a food pyramid is called an _____
Apex predator
Wolves are keystone species?
True
Bottom-up cascade example
seagrass
What is a keystone species?
A species which other species in a ecosystem depend on, if removed would drastically change the ecosystem.
What is the main idea of a trophic cascade?
It's the cause and effect of a species removed from an ecosystem.
deer population was dominant in this ecosystem. This meant that there was no grass and this affected the soil. Then the __________ came, which their purpose was to control the deer population. So they did that and the ecosystem prospered and more organisms appeared.
Wolves of yellowstone national patk
A community is made up of all the same organisms in an area.
False
Top-down cascade example?
Sea otters from the pacific coast.
What is a top-down cascade?
A top-down cascade occurs in an ecosystem where top predators control population of primary consumers.
What is the main idea of keystone species?
Orgs. that help define an entire ecosystem.
If an apex predator's __________ decreases, it can affect an entire ecosystem.
Population
Plants, animals, grass, moss, bacteria, and molds are all examples of biotic factors.
True.
What are three examples of keystone species?
Beavers, grey wolves, sea otters, african elephants, bees, grizzly bear, hummingbird, ivory tree coral, jaguar, pacific salmon, etc...
What is a Bottom-up Cascade?
What is the difference between abiotic and biotic.
Biotic is all living things
Abiotic is all non living things.
living organisms that shape the environment defines a ______ factor.
A biotic factor
Abiotic factors are wolves, frogs, trees, flys, etc.
False
What are some examples of abiotic factors.
Light, temperature, water.
The number of organisms that an ecosystem can sustainably support defines this_____
carrying capacity
Why do we learn about trophic cascades?
important for understanding the knock-on effects of removing top predators from food webs
The _____ is the amount of energy lost as you move up the food chain.
10% rule
Animals that feed/get there energy off of dead orgs are called primary consumers.
False