Geography SL
Geography SL
10
Chapters
152
Notes
Option A - Freshwater – Drainage basins
Option A - Freshwater – Drainage basins
Option B - Oceans & coastal margins
Option B - Oceans & coastal margins
Option C - Extreme Environments
Option C - Extreme Environments
Option D - Geophysical Hazards
Option D - Geophysical Hazards
Option E - Leisure, Tourism And Sport
Option E - Leisure, Tourism And Sport
Option F - The Geography Of Food & Health
Option F - The Geography Of Food & Health
Option G - Urban Environments
Option G - Urban Environments
Unit 1 - Changing Population
Unit 1 - Changing Population
Unit 2 - Global Climate - Vulnerability & Resilience
Unit 2 - Global Climate - Vulnerability & Resilience
Unit 3 - Global Resource Consumption & Security
Unit 3 - Global Resource Consumption & Security
IB Resources
Option B - Oceans & coastal margins
Geography SL
Geography SL

Option B - Oceans & coastal margins

The Domino Effect: How Overfishing Disrupts Global Ecosystems & Economies

Word Count Emoji
665 words
Reading Time Emoji
4 mins read
Updated at Emoji
Last edited on 16th Oct 2024

Table of content

Introduction - the world's fishing plate

Fact Fun: The world's fisheries and aquaculture contributed almost 160 million tonnes of fish in 2012, valued at over $215 billion. It's a lot of fish, but more impressively, it's the amount of money that makes it "reel"ly significant!

 

Food fish supply has grown from 9.9 kg per person in the 1960s to 19 kg in 2012.

The fish pyramid - the decline of fish stocks

Fact Fun: Fishing fleets now catch fewer large predatory fish (like the mighty cod) but more smaller fish further down the food chain. This impacts both the type of fish available for human consumption and could also cause a lasting change in marine ecosystems.

 

Overfishing of top-level predators like cod leads to an increase in smaller fish populations.

Money down the drain - inefficient fishing practices

Fact Fun: A World Bank and FAO report showed that poor management, inefficiency, and overfishing cause up to $50 billion in losses per year for world fisheries. Also, despite investments in technology, fish stocks are so depleted that it takes more effort to find and catch the remaining fish.

 

The world’s fisheries capacity continues to grow but, due to over-capacity, much of the investment in new technology is wasted.

 

Real-world Example: Ever tried to catch butterflies with a net, but there were only a few butterflies left? It's kind of like that with fishing, too. There's plenty of capacity to catch fish (imagine lots of big nets), but fewer fish to catch. That’s the sad reality of overfishing!

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IB Resources
Option B - Oceans & coastal margins
Geography SL
Geography SL

Option B - Oceans & coastal margins

The Domino Effect: How Overfishing Disrupts Global Ecosystems & Economies

Word Count Emoji
665 words
Reading Time Emoji
4 mins read
Updated at Emoji
Last edited on 16th Oct 2024

Table of content

Introduction - the world's fishing plate

Fact Fun: The world's fisheries and aquaculture contributed almost 160 million tonnes of fish in 2012, valued at over $215 billion. It's a lot of fish, but more impressively, it's the amount of money that makes it "reel"ly significant!

 

Food fish supply has grown from 9.9 kg per person in the 1960s to 19 kg in 2012.

The fish pyramid - the decline of fish stocks

Fact Fun: Fishing fleets now catch fewer large predatory fish (like the mighty cod) but more smaller fish further down the food chain. This impacts both the type of fish available for human consumption and could also cause a lasting change in marine ecosystems.

 

Overfishing of top-level predators like cod leads to an increase in smaller fish populations.

Money down the drain - inefficient fishing practices

Fact Fun: A World Bank and FAO report showed that poor management, inefficiency, and overfishing cause up to $50 billion in losses per year for world fisheries. Also, despite investments in technology, fish stocks are so depleted that it takes more effort to find and catch the remaining fish.

 

The world’s fisheries capacity continues to grow but, due to over-capacity, much of the investment in new technology is wasted.

 

Real-world Example: Ever tried to catch butterflies with a net, but there were only a few butterflies left? It's kind of like that with fishing, too. There's plenty of capacity to catch fish (imagine lots of big nets), but fewer fish to catch. That’s the sad reality of overfishing!

Unlock the Full Content! File Is Locked Emoji

Dive deeper and gain exclusive access to premium files of Geography SL. Subscribe now and get closer to that 45 🌟