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Vocab 19.2
Measuring Populations
Term | Definition |
---|---|
Growth Rate | An expression of the increase in the size of an organism or population over a given period of time |
Immigration | The movement of an individual or group into an area |
Emigration | The movement of an individual or group out of an area |
Exponential Model | A model of population growth in which a constant and unlimited growth rate results in geometric increases in population size |
Limiting Factor | An environmental factor that prevents an organism or population from reaching its full potential of distribution or activity |
Logistic Model | A model of population growth that assumes that finite resource levels limit population growth |
Carrying Capacity | The largest population that an environment can support at any given time |
Density-Independent Factor | A variable that affects a population regardless of the population density, such as climate |
Density-Dependent Factor | A variable affected by the number of organisms present in a given area |
Inbreeding | The crossing or mating of plants or animals with close relatives |