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Changes
Leaves
Smorgasboard
Populations
Films
100
the earliest stage of a successional community.
What is a pioneer?
100
Leaves begin growing from this bumpy structure on a stem.
What is a node?
100
The stunted little communities of trees found right at tree limit.
What is krummholz?
100
An organism's functional role within its habitat.
What is a niche?
100
The community on Presque Isle was an example of this ecological principle.
What is succession?
200
The type of community change that follows after a disturbance, such as a fire.
What is secondary succession?
200
The outer edge of a leaf blade.
What is the margin?
200
The tendency for energy to become more random as it flows through an ecosystem.
What is entropy?
200
A population's birth rate.
What is natality?
200
An ancient forest that has never been commercially logged.
What is old growth?
300
A species with a narrow niche found in climax communities.
What is a specialist?
300
The blades that make up a compound leaf.
What is a leaflet?
300
The boundary between two life zones.
What is an ecotone?
300
These conditions check a population's productivity when in short supply.
What is a limiting factor?
300
A plant or animal within an ecosystem whose health is used to gauge the vitality of the ecosystem.
What is an indicator species?
400
One specific change in a progression of successional stages within a community.
What is seral stage?
400
Trees that lose their leaves every autumn.
What is deciduous?
400
An organism that can serve as both primary and secondary consumer.
What is an omnivore?
400
Two marmots battling for grass is an example of this type of competition.
What is intra-specific competition?
400
These noxious "tumble weed" invaders acted as early pioneers on Presque Isle.
What is Russian Thistle?
500
Lichens breaking down rock to begin creating soil is this type of succession.
What is primary succession?
500
This tree's little seed pods (samaras) look like little "wings" as they spin to the ground.
What is a Rocky Mountain Maple?
500
A tree that has both male and female cones on the same tree.
What is monoecious?
500
A population's whose reproductive potential exceeds the carrying capacity of their environment.
What is an "r" selected species?
500
The abundant supply of minerals and biomass tied up in the massive trees that can be re-invested back into the soil to keep nurturing growth.
What is biological capital?