population growth and competition

what are the 4 phases in population growth?

• lag phase

• exponential growth phase

• transitional phase

• plateau/stationary phase

what is the lag phase in population growth?

• a period of slow growth as the initial population reproduce

• birth rate > death rate

what is the exponential growth phase of population growth?

• a period of rapid growth as the population multiplies exponentially

• no limiting factors

• birth rate > death rate

what is the plateau/stationary phase in population growth?

• a stable state

• birth rate = death rate

• further population growth is prevented by limiting factors

what is the carrying capacity (K) in population growth?

• max population size an environment can support

what are limiting factors in population growth?

a limiting factor is an environmental resource or constraint that limits population growth

what are the 2 types of limiting factors?

• biotic

• abiotic

what are some biotic limiting factors?

• predators

• disease

• competition

what are some abiotic limiting factors?

• Temperature

• Light

• pH

• Water availability

• Oxygen levels

• Humidity