Exam 4 Must-Know Cards

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Last updated 7:07 PM on 6/14/26
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12 Terms

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Five Interaction Types
Competition, Predation, Herbivory, Parasitism, Mutualism
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Interaction Signs
Competition (-/-), Predation (+/-), Herbivory (+/-), Parasitism (+/-), Mutualism (+/+)
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Most Common Productivity-Diversity Pattern
Hump-shaped curve
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Keystone Species Definition
Species with a disproportionately large effect on community structure
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Resistance vs Resilience
Resistance = withstand change; Resilience = recover after change
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Apparent Competition
Two species indirectly harm each other through a shared predator
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Liebig's Law of the Minimum
Growth is limited by the scarcest resource
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Food Web Rule
Same direction up the chain, opposite direction down the chain
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Competition Experiment
Remove one species; if the other increases, competition likely exists
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Predation Experiment
Remove predator; prey should increase
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Mutualism Experiment
Remove partner; both species perform worse
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Food Web Question Shortcut
Follow arrows; more food = usually more consumers, fewer food resources = usually fewer consumers