Biology / Unit 14 Bio 3563 short lesson, about 20 seconds
Density-Dependent Limiting Factors
Captions available
The idea
A density-dependent factor's effect on growth rate strengthens as density increases, as when competition for food or disease transmission intensifies in a denser population.
In practice
Disease spreads faster through a dense population than a sparse one, so mortality rises with density.
Where people slip
A density-dependent factor's effect changes with density — it is not any factor that merely kills many individuals at once.
Your place on the trail
Every lesson rests on earlier ones and opens later ones. Tap any to jump.
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