Download File - Mr. Schmitt Biology 12 AP

Ecology: Communities
How are communities structured?
How do the interactions of species in a community lead to emergent properties?
Where are we?
Community Interactions
Competition
Niche:
- Fundamental niche
- Realized niche
Effects of Competition
Competitive Exclusion
Resource Partitioning
Character Displacement
Predation
Effects of Predation
Colouration


Mimicry


Herbivory
Symbiosis
Mutualism
Facilitation
Characterizing Communities
Diversity
Can be understood in terms of:
Parasitism
Commensalism
Trophic Structure
Food Chain
Food Web
Keystone Species
Trophic Limits
Energetic Hypothesis
Dynamic Stability Hypothesis
How are food chains controlled?
‘Bottom-Up model’
‘Top-Down model’
Effects on Diversity
Disturbance – any event that
The intermediate disturbance hypothesis
Succession
Primary
Secondary
Biogeographic Factors
Area Effects
Why?
Evapotranspiration
Why?
Island Effects
Make sure you can …
… describe and compare all of the community interactions discussed and provide multiple examples of each.
… explain the relationship between community diversity and stability.
… quantitatively demonstrate the diversity of a community.
… explain the interactions in a community that contribute to its trophic structure.
… explain why community diversity is maximized when disturbance is present at an intermediate level.
… explain the processes of primary and secondary succession.
… explain the effects of all of the biogeographical factors on community structure discussed here.