IB Geography Topic B.3.4 Management of Coral Reefs and Mangrove Swamps Revision Notes (SL/HL)

IB Geography Topic B.3.4 Management of Coral Reefs and Mangrove Swamps Revision Notes (SL/HL) | RevisionDojo

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Protecting Fragile Ecosystems

Imagine snorkeling in crystal-clear waters, surrounded by vibrant coral reefs teeming with life. Now picture a mangrove forest, its tangled roots sheltering fish and absorbing the force of ocean waves.
These ecosystems are not just beautiful, they are vital to our planet’s health. But they are under threat.

Coral Reefs: Threats and Management

Threats to Coral Reefs

Overfishing
1. Disrupts food chains and reduces biodiversity.
2. Removes key species like herbivorous fish, allowing algae to overgrow and smother corals.
Coral Bleaching
1. Triggered by rising sea temperatures.
2. This causes corals to expel symbiotic algae, losing their colour and vital energy source.
Pollution
1. Runoff from agriculture introduces harmful chemicals.
2. Sedimentation reduces sunlight, hindering photosynthesis.

Example

The Great Barrier Reef in Australia has lost over 50% of its coral cover due to bleaching events and pollution.

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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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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 nisi ut aliquip ex ea commodo consequat.

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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Protecting Fragile Ecosystems

Imagine snorkeling in crystal-clear waters, surrounded by vibrant coral reefs teeming with life. Now picture a mangrove forest, its tangled roots sheltering fish and absorbing the force of ocean waves.
These ecosystems are not just beautiful, they are vital to our planet’s health. But they are under threat.

Coral Reefs: Threats and Management

Threats to Coral Reefs

Overfishing
1. Disrupts food chains and reduces biodiversity.
2. Removes key species like herbivorous fish, allowing algae to overgrow and smother corals.
Coral Bleaching
1. Triggered by rising sea temperatures.
2. This causes corals to expel symbiotic algae, losing their colour and vital energy source.
Pollution
1. Runoff from agriculture introduces harmful chemicals.
2. Sedimentation reduces sunlight, hindering photosynthesis.

Example

The Great Barrier Reef in Australia has lost over 50% of its coral cover due to bleaching events and pollution.

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.

1 Changing Population3 subtopics

2 Global Climate - Vulnerability and Resilience3 subtopics

3 Global Resource Consumption and Security3 subtopics

4 Power, Places and Networks (HL only)3 subtopics

5 Human Development and Diversity (HL only)3 subtopics

6 Global Risks and Resilience (HL only)3 subtopics

Option A Freshwater - Drainage Basins4 subtopics

Option B Oceans and Coastal Margins4 subtopics

Option C Extreme Environments4 subtopics

Option D Geophysical Hazards4 subtopics

Option E Leisure, Tourism and Sport4 subtopics

Option F The Geography of Food and Health4 subtopics

Option G Urban Environments5 subtopics

IB Geography B.3.4 Management of Coral Reefs and Mangrove Swamps Notes

1 Changing Population3 subtopics

2 Global Climate - Vulnerability and Resilience3 subtopics

3 Global Resource Consumption and Security3 subtopics

4 Power, Places and Networks (HL only)3 subtopics

5 Human Development and Diversity (HL only)3 subtopics

6 Global Risks and Resilience (HL only)3 subtopics

Option A Freshwater - Drainage Basins4 subtopics

Option B Oceans and Coastal Margins4 subtopics

Option C Extreme Environments4 subtopics

Option D Geophysical Hazards4 subtopics

Option E Leisure, Tourism and Sport4 subtopics

Option F The Geography of Food and Health4 subtopics

Option G Urban Environments5 subtopics

Protecting Fragile Ecosystems

Coral Reefs: Threats and Management

Threats to Coral Reefs

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

Protecting Fragile Ecosystems

Coral Reefs: Threats and Management

Threats to Coral Reefs

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