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Population Size Contributors - Coggle Diagram
Population Size Contributors
Increase
Births
Immigration
Exponential Growth
per capita remains the same, population increases
Development of Agriculture
Advances in Sanitation decreased death rates
Technological and medical advancement
Increase in economic development
Decrease
Deaths
Emigration
Use of contraception
caused birth rates to slow
Diseases / Global Pandemics
Poor living conditions
Lack of economic development
Remains the Same
Zero Population Growth
Births are balanced by Deaths
per capita growth rate
Smaller families are wanted, leading to a less rapid population growth
Limitations
Density-dependent limiting factors
predation
parasitism / disease
competition for limited resources
Leads to Logistic Growth
Intraspecific Competition
food
water
hiding places
nesting sites
nutrients
access to sunlight
Density-Independent limiting factors
Natural Disasters
Human-caused events