Population Ecology

Front

The number of individuals that the resources of an environment can normally and persistently support.

Back

carrying capacity

Front

A type of dispersion where individuals are clumped together such as a herd or school.

Back

clumped dispersion

Front

The number of deaths within a population.

Back

death rate

Front

Factors that affect the population only when the number of organisms reach a certain level including competition, predation, parasitism, and disease.

Back

density-dependent limiting factors

Front

Factors that do not depend on how many individuals are in the population including unusual weather events, natural disasters and human activities.

Back

density-independent limiting factors

Front

The movement of individuals out of a population.

Back

emigration

Front

A dramatic increase in population over a short period of time.

Back

exponential growth

Front

The movement of individuals into a population.

Back

immigration

Front

The environmental factor that is of predominant importance in restricting the size of a population.

Back

limiting factor

Front

Growth that takes place when a population's growth rate decreases as population size approaches a maximum imposed by limited resources, the carrying capacity.

Back

logistic growth