IB Biology Topic D4.2.6 Assessing Sustainability of Resource Harvesting from Natural Ecosystems Revision Notes (SL/HL)

IB Biology Topic D4.2.6 Assessing Sustainability of Resource Harvesting from Natural Ecosystems Revision Notes (SL/HL) | RevisionDojo

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Sustainable Harvesting Keeps Extraction At or Below Regeneration

Harvesting is sustainable only when the rate of extraction does not exceed the rate of natural replacement.
Keeping this balance preserves ecosystems for future generations.

Note

Sustainability means meeting present needs without stopping future generations from meeting theirs.

Three Principles Decide Whether Harvesting Is Sustainable

Rate of replacement
1. Resources must regenerate at a rate that matches or exceeds harvesting.
Ecosystem health
1. Harvesting should not disrupt nutrient cycles, energy flow, or biodiversity.
Long-term perspective
1. Decisions must consider the needs of future generations.

Analogy

Treat a resource like a savings account and harvest only the interest, never the balance.
Withdrawing more than you deposit empties the account and leaves nothing for the future.

Sustainable Plant Harvesting Manages Growth and Replenishment

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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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Sustainable Harvesting Keeps Extraction At or Below Regeneration

Harvesting is sustainable only when the rate of extraction does not exceed the rate of natural replacement.
Keeping this balance preserves ecosystems for future generations.

Note

Sustainability means meeting present needs without stopping future generations from meeting theirs.

Three Principles Decide Whether Harvesting Is Sustainable

Rate of replacement
1. Resources must regenerate at a rate that matches or exceeds harvesting.
Ecosystem health
1. Harvesting should not disrupt nutrient cycles, energy flow, or biodiversity.
Long-term perspective
1. Decisions must consider the needs of future generations.

Analogy

Treat a resource like a savings account and harvest only the interest, never the balance.
Withdrawing more than you deposit empties the account and leaves nothing for the future.

Sustainable Plant Harvesting Manages Growth and Replenishment

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.

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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 D4.2.6: Assessing Sustainability of Resource Harvesting from Natural Ecosystems Notes

A - Unity and Diversity9 subtopics

B - Form and Function10 subtopics

C - Interaction and Interdependence9 subtopics

D - Continuity and Change12 subtopics

Sustainable Harvesting Keeps Extraction At or Below Regeneration

Three Principles Decide Whether Harvesting Is Sustainable

Sustainable Plant Harvesting Manages Growth and Replenishment

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

Sustainable Harvesting Keeps Extraction At or Below Regeneration

Three Principles Decide Whether Harvesting Is Sustainable

Sustainable Plant Harvesting Manages Growth and Replenishment

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