IB Biology Topic B4.2.12 Fundamental and Realized Niches Revision Notes (SL/HL)

IB Biology Topic B4.2.12 Fundamental and Realized Niches Revision Notes (SL/HL) | RevisionDojo

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Fundamental vs Realized Niche: What a Species Could Use vs What It Actually Uses

Every species can only survive within set ranges of biotic and abiotic conditions.
This survival range is its range of tolerance, which sets the outer limits of its ecological niche.

Note

A niche is not just the physical space a species lives in.
It also includes its interactions and functional role in the environment.

The Fundamental Niche: The Full Range a Species Could Occupy

Definition

Fundamental niche

The fundamental niche represents the full range of environmental conditions and resources a species could theoretically occupy if there were no competition, predation, or other biotic limitations.

The fundamental niche is the full set of conditions and resources a species could use with no competitors or predators.
A species free from all such interactions would occupy its entire fundamental niche.
Its size is set by the species' own adaptations, including these.
1. Physiological tolerances, such as the temperature range it can survive.

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Definition

Paywall

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Note

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Tip

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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.

IB Biology Topic B4.2.12: Fundamental and Realized Niches Notes

Fundamental vs Realized Niche: What a Species Could Use vs What It Actually Uses

The Fundamental Niche: The Full Range a Species Could Occupy

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

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Fundamental vs Realized Niche: What a Species Could Use vs What It Actually Uses

The Fundamental Niche: The Full Range a Species Could Occupy

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Duis aute irure dolor in reprehenderit

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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 B4.2.12: Fundamental and Realized Niches Notes

Fundamental vs Realized Niche: What a Species Could Use vs What It Actually Uses

The Fundamental Niche: The Full Range a Species Could Occupy

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

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Fundamental vs Realized Niche: What a Species Could Use vs What It Actually Uses

The Fundamental Niche: The Full Range a Species Could Occupy

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

A - Unity and Diversity9 subtopics

B - Form and Function10 subtopics

C - Interaction and Interdependence9 subtopics

D - Continuity and Change12 subtopics