IB Biology Topic C4.1.16 Predator–prey Relationships Revision Notes (SL/HL)

IB Biology Topic C4.1.16 Predator–prey Relationships Revision Notes (SL/HL) | RevisionDojo

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Predator and Prey Numbers Rise and Fall in Linked Cycles

Predators and their prey regulate each other through a repeating cycle of coupled oscillations.
This is a form of negative feedback between two species, so neither population runs away unchecked.

Note

Predation is a density-dependent factor: its effect gets stronger as prey numbers rise.

The Cycle Turns in Four Repeating Stages

Prey rise, then predators rise
1. More prey means more food, so more predators survive and breed.
Predators rise, then prey fall
1. Heavy predation removes prey faster than they can reproduce.
Prey fall, then predators fall

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Predator and Prey Numbers Rise and Fall in Linked Cycles

Predators and their prey regulate each other through a repeating cycle of coupled oscillations.
This is a form of negative feedback between two species, so neither population runs away unchecked.

Note

Predation is a density-dependent factor: its effect gets stronger as prey numbers rise.

The Cycle Turns in Four Repeating Stages

Prey rise, then predators rise
1. More prey means more food, so more predators survive and breed.
Predators rise, then prey fall
1. Heavy predation removes prey faster than they can reproduce.
Prey fall, then predators fall

Definition

Paywall

(on a website) an arrangement whereby access is restricted to users who have paid to subscribe to the site.

anim nostrud sit dolore minim proident quis fugiat velit et eiusmod nulla quis nulla mollit dolor sunt culpa aliqua

Duis aute irure dolor in reprehenderit

Note

Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam quis nostrud exercitation.

Excepteur sint occaecat cupidatat non proident

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Lorem ipsum dolor sit amet, consectetur adipiscing elit.
Sed do eiusmod tempor incididunt ut labore et dolore magna aliqua.
Ut enim ad minim veniam, quis nostrud exercitation ullamco laboris.
Duis aute irure dolor in reprehenderit in voluptate velit esse cillum.

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A - Unity and Diversity9 subtopics

B - Form and Function10 subtopics

C - Interaction and Interdependence9 subtopics

D - Continuity and Change12 subtopics

IB Biology Topic C4.1.16: Predator–prey Relationships Notes

A - Unity and Diversity9 subtopics

B - Form and Function10 subtopics

C - Interaction and Interdependence9 subtopics

D - Continuity and Change12 subtopics

Predator and Prey Numbers Rise and Fall in Linked Cycles

The Cycle Turns in Four Repeating Stages

anim nostrud sit dolore minim proident quis fugiat velit et eiusmod nulla quis nulla mollit dolor sunt culpa aliqua

Duis aute irure dolor in reprehenderit

Excepteur sint occaecat cupidatat non proident

Unlock the rest of this chapter with a free account

Predator and Prey Numbers Rise and Fall in Linked Cycles

The Cycle Turns in Four Repeating Stages

anim nostrud sit dolore minim proident quis fugiat velit et eiusmod nulla quis nulla mollit dolor sunt culpa aliqua

Duis aute irure dolor in reprehenderit

Excepteur sint occaecat cupidatat non proident

Unlock the rest of this chapter with a free account