14.4 Population Growth Patterns

Front

What four factors determine the

growth rate of a population?

Back

immigration, births, deaths, emigration

Front

How does carrying capacity affect

the size of a population?

Back

Carrying capacity limits the size of a

population.

Front

What is the main difference between

a density-dependent limiting

factor and a density-independent

limiting factor? Give examples of

each.

Back

A density-dependent limiting factor is

affected by the number of individuals in a

given area, but a density-independent

limiting factor is not affected by population

size. Examples of density-dependent

Front

Apply What might cause

exponential growth to occur only

for a short period when a new

species is introduced to a resourcefilled

environment?

Back

Eventually, the growing population will

consume all available resources, and the

species may experience a population crash.

Front

Synthesize How might densitydependent

limiting factors be

affected by a flood or some other

natural disaster?

Back

a

flood or other natural disaster destroying

resources, predators, or prey in an area,

which are density-dependent factors.

Front

Give an example of how a

symbiotic relationship could

cause a population crash.

Back

If a parasite or disease spreads in a dense

population, it could cause a population to

decline dramatically over a short period

of time