BIOLOGY Limiting Factors Limiting factor Anything that prevents a population from growing too large Examples Discuss Space disease predation Sunlight Competition food water mates ID: 332191
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Slide1
Limiting Factors
BIOLOGYSlide2
Limiting Factors
Limiting factor:
Anything that prevents a population from growing too
large
Examples? Discuss
Space (disease, predation)
Sunlight
Competition (food, water, mates)Slide3
Why do males chase females?
Limiting factor: eggs Slide4
Density-Dependent Limiting Factors
Any factor limiting the size of a population whose effect
is dependent
on the
population size.
Examples?
Disease (overcrowding)
Competition (food, water, shelter)
PredationSlide5
Density-Independent Limiting Factors
Any factor limiting the size of a population whose effect
is NOT dependent
on the population size.
Examples?
Drought
Natural disasters
Damming rivers, clear-cutting forests Slide6
Carrying Capacity
Carrying
Capacity:
Maximum number of individuals an environment can support
After overshoot.. Population decline, then recovery Slide7
Carrying Capacity Graph Slide8
The carrying
c
apacity is limited by limiting factors!
Exponential Growth
Population decline
Recovery/stabilization Slide9
What’s Due
Engineering sketch
Materials/items (for building)
Ecology Unit Test next Wednesday/Thursday