Population Density

Front

What is population density?

Back

Population density is the number of individuals living per unit area, often expressed as individuals per square kilometer or square mile.

Front

What happens to a population as resources become less available?

Back

The population reaches its carrying capacity, where the number of individuals stabilizes due to limited resources.

Front

What is a density-dependent limiting factor?

Back

A density-dependent limiting factor is a factor whose effects on the size or growth of the population vary with the population density, such as competition, disease, and predation.

Front

What is a density-independent limiting factor?

Back

A density-independent limiting factor is a factor that affects population size regardless of the population's density, such as natural disasters or climate.

Front

What is carrying capacity?

Back

Carrying capacity is the maximum number of individuals of a particular species that an environment can support sustainably.

Front

How does immigration affect population growth?

Back

Immigration increases the population size by adding new individuals from other areas.

Front

How does emigration affect population growth?

Back

Emigration decreases the population size by removing individuals who leave the area.

Front

What is the relationship between birthrate and population growth?

Back

An increased birthrate contributes to population growth, while a decreased birthrate slows it down.

Front

What is an example of a density-dependent limiting factor?

Back

Competition for resources, such as food and space, is an example of a density-dependent limiting factor.

Front

What is an example of a density-independent limiting factor?

Back

Temperature changes or natural disasters, like hurricanes, are examples of density-independent limiting factors.