AP Biology · Unit 8: Ecology
8.5 Community Ecology
In short
You must understand community structure in terms of species composition and diversity, and be able to calculate Simpson's Diversity Index. You need to explain how interactions (competition, predation, symbioses including parasitism, mutualism, and commensalism) drive population dynamics and determine access to energy and matter.
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What else do you need to know about Community Ecology?
The topic requires characterizing these relationships as positive or negative and understanding models of predator/prey interactions, cooperation, trophic cascades, and niche partitioning. The topic is explicitly tied to Big Idea 2 (Energetics), emphasizing how these interactions dictate energy and matter access.
Can you do these?
- I understand that communities change over time based on the interactions between populations of different species.
- I can describe how competition, predation, and symbioses (parasitism, mutualism, commensalism) drive population dynamics.
How is Community Ecology tested on the exam?
Assessed using 'Describe' and 'Explain' command words. Questions may require you to use confidence intervals and error bars to estimate whether sample means are statistically different (Suggested Skill 5.B). You should be prepared to apply the Simpson's Diversity Index formula to community data to quantify diversity.
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Community Ecology: common questions
What do you need to know about Community Ecology for AP Biology?
You must understand community structure in terms of species composition and diversity, and be able to calculate Simpson's Diversity Index. You need to explain how interactions (competition, predation, symbioses including parasitism, mutualism, and commensalism) drive population dynamics and determine access to energy and matter.
How is Community Ecology tested on the AP Biology exam?
Assessed using 'Describe' and 'Explain' command words. Questions may require you to use confidence intervals and error bars to estimate whether sample means are statistically different (Suggested Skill 5.B). You should be prepared to apply the Simpson's Diversity Index formula to community data to quantify diversity.
How do I know I have mastered Community Ecology?
Check you can do each of these: I understand that communities change over time based on the interactions between populations of different species; describe how competition, predation, and symbioses (parasitism, mutualism, commensalism) drive population dynamics.
Where does Community Ecology fit in AP Biology?
Community Ecology is topic 8.5 in Unit 8: Ecology of AP Biology.
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