IB Biology Topic D4.3.6 Poleward and Upslope Range Shifts of Temperate Species Revision Notes (SL/HL)

IB Biology Topic D4.3.6 Poleward and Upslope Range Shifts of Temperate Species Revision Notes (SL/HL) | RevisionDojo

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Range shifts: species track their climate as the planet warms

As the planet warms, species shift their ranges to stay within their preferred temperature and climate envelope.
This usually means moving poleward toward higher latitudes or upslope toward cooler, higher elevations.

Definition

Range shift

A range shift refers to the movement of a species’ habitat in response to environmental changes, such as climate warming.

Species move because their old habitat drifts outside their tolerance

Temperature tolerance: many species tolerate only a narrow temperature range, so rising heat makes their current habitat unsuitable.
Habitat availability: cooler areas at higher latitudes or elevations provide refuge as conditions change.
Resource dependency: warming shifts food availability, breeding sites, and other resources that species must follow.

Note

Not every species can simply move higher or farther to escape warming.
Species already at mountaintops have nowhere left to go, making them highly vulnerable to extinction.

New Guinea's montane birds are climbing upslope as the lowlands warm

Tropical montane birds in New Guinea are shifting their ranges upslope as temperatures rise on the mountainsides.

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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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Range shifts: species track their climate as the planet warms

As the planet warms, species shift their ranges to stay within their preferred temperature and climate envelope.
This usually means moving poleward toward higher latitudes or upslope toward cooler, higher elevations.

Definition

Range shift

A range shift refers to the movement of a species’ habitat in response to environmental changes, such as climate warming.

Species move because their old habitat drifts outside their tolerance

Temperature tolerance: many species tolerate only a narrow temperature range, so rising heat makes their current habitat unsuitable.
Habitat availability: cooler areas at higher latitudes or elevations provide refuge as conditions change.
Resource dependency: warming shifts food availability, breeding sites, and other resources that species must follow.

Note

Not every species can simply move higher or farther to escape warming.
Species already at mountaintops have nowhere left to go, making them highly vulnerable to extinction.

New Guinea's montane birds are climbing upslope as the lowlands warm

Tropical montane birds in New Guinea are shifting their ranges upslope as temperatures rise on the mountainsides.

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

Tip

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.

A - Unity and Diversity9 subtopics

B - Form and Function10 subtopics

C - Interaction and Interdependence9 subtopics

D - Continuity and Change12 subtopics

IB Biology Topic D4.3.6: Poleward and Upslope Range Shifts of Temperate Species Notes

A - Unity and Diversity9 subtopics

B - Form and Function10 subtopics

C - Interaction and Interdependence9 subtopics

D - Continuity and Change12 subtopics

Range shifts: species track their climate as the planet warms

Species move because their old habitat drifts outside their tolerance

New Guinea's montane birds are climbing upslope as the lowlands warm

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

Range shifts: species track their climate as the planet warms

Species move because their old habitat drifts outside their tolerance

New Guinea's montane birds are climbing upslope as the lowlands warm

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