Limiting Factors Ecosystems. Let’s suppose…. We have two mice…: and they produce the standard...
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Transcript of Limiting Factors Ecosystems. Let’s suppose…. We have two mice…: and they produce the standard...
Limiting Factors
Ecosystems
Let’s suppose….
We have two mice…:
and they produce the standard 56 “pups” (baby mice) each year.
and each of these mice goes on to have 56 babies each year….
Soon…..
We’d be over-run with mice on the planet!!
Why doesn’t this occur?
Limiting Factors
A limiting factor is an abiotic or biotic factor that restricts the number of individuals in a population.
Limiting Factors
Limiting factors can include:
1. Competitors
Limiting Factors
Limiting factors can include:
1. Competitors
2. Disease and parasites
Limiting Factors
Limiting factors can include:
1. Competitors
2. Disease and parasites
3. Weather
Limiting Factors
Limiting factors can include:
1. Competitors
2. Disease and parasites
3. Weather
4. Fires
Limiting Factors
Limiting factors can include:
1. Competitors
2. Disease and parasites
3. Weather
4. Fires
5. Available habitat
Limiting Factors
Limiting factors can include:
1. Competitors
2. Disease and parasites
3. Weather
4. Fires
5. Available habitat
6. Predators
Competitors-organisms both cooperate and compete
Red-Tailed Hawk Barred Owl
•Birds of prey
•Live in forests on the edge of fields
•Eat mice and other rodents
•Nest in trees
Disease and Parasites
Diseases and parasites can be dependent on population size and habitat
Weather
StormsDroughtFloodingHeat/cold
Fires
Fires lead to succession which is a predictable change in the community over time.
Available Habitat
Human activities play a large role
Development, damming rivers, clear cutting forests.
Predators
Predator-prey relationship can be a delicate balance between the two populations.
Predators As the prey
population increases, the predator population increases. As the prey population decreases, then so does the predator population.
Example: Lynx and Hare: