Population
Demographic Transition
Rule of 70
Transitional
Population Growth
Species
K-Selected and r-Selected Species
Overpopulation
Fertility Rate
Generalist and Specialist Species
Industrial
Pre-Industrial
Post-Industrial
Growth Rates & Doubling Time
r-Selected-"are those that emphasize high growth rates, typically exploit less-crowded ecological niches, and produce many offspring,
Urban Sprawl
J-Curve
Carrying Capacity
Survivorship Curve
K-selected-"are characterized by having only a few offspring but investing high amounts of parental care."
Generalist Species-"able to thrive in a wide variety of environmental conditions and can make use of a variety of different resources"
Specialist Species-" A specialist species can thrive only in a narrow range of environmental conditions or has a limited diet"
S-Curve
Age Structure
Population Pyramid
Living conditions are severe, medical care is bad, food supply limited
Birth rates are high to compensate for the high mortality rates
Ex. Sub-Saharan Africa
Standards of hygiene, medical care, cleaner water supply, vaccinations, and better education start to drive down death rate
Birth rate is still high, leading to a rapid increase in population size
Pollution from Large Population
Urban Runoff
The number of individuals in a population or community that an ecosystem can successfully, efficiently, and readily sustain given the number of resources available within the environment.
Advancements in education and medicine make birth rates decline. Parents are more actively discouraged from having multiple children.
Birth rate is almost equal to death rate
The expansion of a population within an urban area to outside, and surrounding land in order to have enough room to support and sustain the population. This often occurs when overpopulation happens within an urban setting.
Standard of living is the highest out of all four transitional periods.
Birth rate equals mortality rate, and in some countries even falls below mortality rate. This results in net losses in population, or, if the two are equal, zero population growth.
click to edit
Surface pollution that is the result of overpopulation and urbanization. This often involves motor oil from cars that runs off of the roads and into the waterways of cities, ultimately polluting the water.
a calcuation to determine how many years it will take for a population to double
70/percent growth rate=doubling time