“The intrinsic growth rate is the average annual percentage growth rate of a population resulting from the effects of births and deaths. The calculation of the intrinsic growth rate does not take into account any immigration or emigration that may be occurring in a population. The intrinsic growth rate can be positive or negative and is usually expressed as a percentage.
The intrinsic growth rate is calculated by first determine the crude birth rate and the crude death rate for a population. The crude birth rate is the number of births in a population divided by the midyear population. The crude death rate is the number of deaths in a population divided by the midyear population. The midyear population is the average of the population at the beginning and the end of a year. The difference between the crude birth rate and the crude death rate is then divided by the crude birth rate. This number is then multiplied by 100 to give the intrinsic growth rate as a percentage.
The intrinsic growth rate is important because it is a measure of the potential for growth of a population. The higher the intrinsic growth rate the greater the potential for growth. The intrinsic growth rate can be used to make predictions about the future size of a population.
The intrinsic growth rate is not the only factor that determines the future size of a population. Other factors such as immigration and emigration can also affect the population size.
The intrinsic growth rate can be affected by many factors including the age structure of the population the fertility rate the mortality rate and the sex ratio. The age structure of the population can affect the intrinsic growth rate because it affects the number of births and deaths in a population. The fertility rate is the number of children born per woman. The higher the fertility rate the higher the number of births and the higher the intrinsic growth rate. The mortality rate is the number of deaths per 1000 people. The higher the mortality rate the higher the number of deaths and the lower the intrinsic growth rate. The sex ratio is the number of males per 100 females. The sex ratio can affect the intrinsic growth rate because it affects the number of births. If the sex ratio is skewed towards males there will be more births and the intrinsic growth rate will be higher.
The intrinsic growth rate is not the only factor that determines the future size of a population. Other factors such as immigration and emigration can also affect the population size. Immigration is the movement of people into a population and emigration is the movement of people out of a population. Immigration can increase the population size and emigration can decrease the population size.
The intrinsic growth rate is a measure of the potential for growth of a population. The higher the intrinsic growth rate the greater the potential for growth. The intrinsic growth rate can be used to make predictions about the future size of a population. However the intrinsic growth rate is not the only factor that determines the future size of a population. Other factors such as immigration and emigration can also affect the population size.”
Sources:
https://www.investopedia.com/terms/i/intrinsicgrowthrate.asp
https://www.statisticshowto.datasciencecentral.com/intrinsic-growth-rate/
What is the intrinsic growth rate?
The intrinsic growth rate is the rate of growth of a population when there are no density-dependent limiting factors.
What factors can contribute to a population’s intrinsic growth rate?
The intrinsic growth rate is determined by the birth rate and the death rate.
What is the difference between the intrinsic growth rate and the actual growth rate?
The actual growth rate is the actual rate at which the population is growing while the intrinsic growth rate is the rate of growth of a population when there are no density-dependent limiting factors.
How do density-dependent limiting factors affect a population’s growth rate?
Density-dependent limiting factors affect a population’s growth rate by reducing the growth rate as the population density increases.
What is an example of a density-dependent limiting factor?
Competition for resources is an example of a density-dependent limiting factor.
What is an example of a density-independent limiting factor?
A natural disaster is an example of a density-independent limiting factor.
How does the carrying capacity of an environment affect the growth rate of a population?
The carrying capacity of an environment is the maximum number of individuals that can be supported by the environment.
Once the carrying capacity is reached the growth rate of the population will decrease.
What happens to a population’s growth rate when the carrying capacity is reached?
When the carrying capacity is reached the growth rate of the population will decrease.
What is the difference between a population’s carrying capacity and its maximum population size?
The carrying capacity is the maximum number of individuals that can be supported by the environment while the maximum population size is the maximum number of individuals that a population can reach.
How does the environment affect the carrying capacity of a population?
The carrying capacity of a population is determined by the resources available in the environment.
What is the difference between the carrying capacity and the environmental carrying capacity?
The carrying capacity is the maximum number of individuals that can be supported by the environment while the environmental carrying capacity is the maximum number of individuals that the environment can support.
How do human activities affect the carrying capacity of the environment?
Human activities can affect the carrying capacity of the environment by causing pollution and by consumin
