Stages of the DTM
What is the pre-industrial/first stage?
What is Nigeria/Ethiopia?
This is the growth rate when the birth rate is 7.2% and the death rate is 2.2%.
What is 5%?
This type of growth occurs when a population reaches carrying capacity.
What is logistic growth?
Most populated country in the world.
What is India?
In this stage there is a decline in birth rates and population growth slows.
What is the industrial/third stage?
The population growth when the age structure diagram is like a rectangle.
What is stable/no population growth?
This is the value of r when the crude birth rate is 25 and the crude death rate is 11.
What is 1.4%
When the population exceeds carrying capacity. This is followed by rapid die-off.
What is overshoot?
The average number of children born to a woman in her lifetime.
What is TFR (total fertility rate)?
In this stage, there are both low birth and death rates so the population stabilizes and starts to decline.
What is the postindustrial/fourth stage?
The population growth when the base of the diagram is larger.
What is increasing population growth?
This is the doubling time when the growth rate is 5%.
What is 14 years?
This is characteristic of r-selected strategists.
What is many offspring/no parental care/early die-off?
What is the Type III survivorship curve?
In this stage, the death rate is lower because of better access to healthcare. The population grows fast.
What is the transitional/second stage?
What is access to family planning/healthcare/clean water or education of women?
The growth rate when there are 2,000 births, 500 deaths, 200 emigrants, 100 immigrants in a population of 100,000 people.
What is 1.4%
When organisms reach their maximum reproductive rates.
What is biotic potential?
Song birds show this survivorship curve.
What is a type II survivorship curve?
What is the postindustrial/fourth stage?
The current United State population.
What is approximately 340 million?
The year a population will double when in 2025 the growth rate is 1.4%.
What is 2075?
What are K-selected strategists?
This is the replacement fertility level.
What is 2.1?