Population Ecology
A group of individuals of the same species living in the same area.
Population
The movement of individuals into a population.
Biodiversity
The study of interactions between organisms and their environment.
Ecology
A relationship in which both organisms benefit.
Mutualism
Organisms that make their own food.
Autotrophs
Factors that limit population growth based on population size.
Density Dependent Factors
Differences in genes among individuals of the same species.
Genetic Diversity
All living and nonliving things interacting in an area.
Ecosystem
A relationship where one organism benefits and the other is unaffected.
Commensalism
Organisms that obtain energy by eating other organisms.
Heterotrophs
Factors such as floods, fires, and droughts that affect populations regardless of size.
Density Independent Factors
When habitats are broken into smaller isolated pieces.
Habitat Fragmentation
All populations living together in an area.
Community
A relationship where one organism benefits while the other is harmed.
Parasitism
A model showing multiple interconnected feeding relationships.
Food Web
The maximum number of organisms an environment can support.
Carrying Capacity
Resources that can naturally replenish over time.
Renewable Resources
A large geographic region defined by climate and organisms.
Biome
The gradual replacement of one community by another over time.
Succession
The form of energy lost at each trophic level.
Heat
The movement of organisms into or out of a population.
Immigration and Emigration
A major cause of biodiversity loss when natural areas are destroyed.
Habitat Destruction
The part of Earth where life exists.
Biosphere
A stable, mature community that forms at the end of succession.
Climax Community
The percentage of energy typically transferred to the next trophic level.
10%