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Population Growth - Coggle Diagram
Population Growth
Main factors
Birth
Death
Immigration
Emigration
Limits leading to reduction
Density dependent
Predation
Carrying capacity
Parasitism
Diseases
Intraspecific competition
Resources
Density-independent
Disasters
Volcanic eruption
Tsunamis
Human invasion
Documenting life history patterns
Survivorship curves
Type I
Convex
Example: Humans
Death rate late
Type II
Diagonal
Example: Birds
Death rate doesn't vary with age
Type III
Concave
Example: Plants (many seeds)
Death rate early
Selections
r-selection
Produce quickly/profusely
K-selection
Produce little/high quality
Human population growth
Demographic transition model
Preindustrial
High birth & death rates
Transitional
Death rate drops
Industrial
Birth rate drops
Postindustrial
Birth rate below death rate