BIOB.docx - Factors affecting growth as population density...

Factors affecting growth as population density
Density dependence
 Competition
 Territoriality
 Disease
 Predation
Harvest regulations
 Quota systems
 Size limits
 Moratoriums
 Ex. With fish you can only harvest so many at a time
Endangered species: Declining Populations
 Ex. Eagles, cheetahs
*human population is growing faster than exponential
Immigration: influx of individuals
Emigration: movement of individuals out of an area
Metapopulations
 Multiple populations linked by im/emigration
 Patches of habitat across landscapes
 Ex. Aland checkerspot butterfly