Ecological Succession
This type of succession occurs on bare rock or land with no previous life.
What is primary succession?
True or false: Introducing ne species into an ecosystem increases biodiversity
What is False.
These organisms break down dead organisms and recycle nutrients back into the ecosystem.
What are decomposers?
Organisms that require the same resources may experience this type of interaction.
What is competition?
This type of succession happens after a forest fire or abandoned farmland where soil is already present.
What is secondary succession?
A forest with many types of plants, animals, and microorganisms is more likely to survive environmental changes than a forest with only a few species because it has more ________________.
What is biodiversity?
In an energy pyramid, energy ________ as it moves up each trophic level.
What is decreases?
The pioneer species of secondary succession
What are grasses, weeds, wildflowers?
During succession, this aspect of an ecosystem generally increases, meaning there are more types of plants and animals.
Biodiversity
An ecosystem with high biodiversity is better able to recover after a natural disaster, such as a flood or fire. This ability to recover is called:
What is resiliency?
A species that maintains the balance of an ecosystem
What is a keystone species
Volcanic eruptions can send ash high into the air, blocking sunlight for long periods of time. How would food webs in an ecosystem change if a volcanic eruption caused a large reduction in sunlight for six months?
What is all populations would decrease because the sunlight would be blocked and the producers would decrease.
Name one natural event and one disruption that can trigger primary succession.
What is a Glacier or Volcano eruption?
Biodiversity increases the _________ and can support healthier organisms.
What is stability or sustainability?
Name one way that energy is lost between trophic levels.
What is heat, movement, or waste?
A farm field was used for many years to grow corn. Now it is no longer used for farming and is slowly changing back to a meadow ecosystem. How is the stability of the ecosystem affected?
What is the ecosystem will be more stable because there will be more biodiversity?
The pioneer species of primary succession
What is Lichen?
Give an example of how biodiversity benefits humans directly.
What is providing food, medicine, or clean water?
If a producer captures 10,000 units of energy from the sun, approximately how much energy is available to the secondary consumers?
What is 100 units?
In a stable ecosystem, populations of organisms may fluctuate slightly but remain relatively constant over time. This balance in population sizes is called:
What is Dynamic Equilibrium?