GCSE Biology revision

Biodiversity

Biodiversity and the effect of human interaction on ecosystems

AQA 4.1.1.1

Your specification

AQA student objectives

Learning pathway

All · Most · Some

ALL 🎯

Identify and describe Breeding Programmes for Endangered Species, Protected Areas & Habitat Regeneration and Conservation on Farmland in the context of biodiversity.

MOST 🎯🎯

Explain the relationships between Breeding Programmes for Endangered Species, Protected Areas & Habitat Regeneration and Conservation on Farmland and how they contribute to biodiversity.

SOME 🎯🎯🎯

Apply and analyse knowledge of Breeding Programmes for Endangered Species, Protected Areas & Habitat Regeneration and Conservation on Farmland to interpret unfamiliar information about biodiversity.

Revision summary

Key knowledge

Read on screen, then print for Cornell-style active revision.

Breeding Programmes for Endangered Species

Breeding programmes involve raising endangered species in captivity to safely increase their population numbers.
Once numbers are sufficient, animals can be reintroduced to the wild to join existing populations or establish new ones.
A key limitation is that if the natural habitat remains unsafe or damaged, reintroduced populations are likely to decline again.

1. Breeding Programmes for Endangered SpeciesAQA

Notes

Breeding programmes involve raising endangered species in captivity to safely increase their population numbers.
Once numbers are sufficient, animals can be reintroduced to the wild to join existing populations or establish new ones.
A key limitation is that if the natural habitat remains unsafe or damaged, reintroduced populations are likely to decline again.

Protected Areas & Habitat Regeneration

Creating protected areas helps safeguard ecosystems so that organisms living there are not threatened by human activity.
Regenerating rare habitats such as mangroves and coral reefs helps restore biodiversity in damaged ecosystems.
If habitats are properly protected, breeding programmes may become unnecessary as species can survive naturally.

2. Protected Areas & Habitat RegenerationAQA

Notes

Creating protected areas helps safeguard ecosystems so that organisms living there are not threatened by human activity.
Regenerating rare habitats such as mangroves and coral reefs helps restore biodiversity in damaged ecosystems.
If habitats are properly protected, breeding programmes may become unnecessary as species can survive naturally.

Conservation on Farmland

Field margins are narrow strips around the edge of fields where a variety of plants can grow freely, increasing local biodiversity.
Hedgerows are borders of shrubs and trees around fields that provide additional habitats and food sources for a range of species.
Governments encourage these practices by introducing laws or offering financial incentives to farmers who adopt them.

3. Conservation on FarmlandAQA

Notes

Field margins are narrow strips around the edge of fields where a variety of plants can grow freely, increasing local biodiversity.
Hedgerows are borders of shrubs and trees around fields that provide additional habitats and food sources for a range of species.
Governments encourage these practices by introducing laws or offering financial incentives to farmers who adopt them.

Government Regulations

Governments set quotas to limit the amount of deforestation permitted each year, helping to protect forest ecosystems.
Businesses are often restricted by legal limits on how much carbon dioxide they can release into the atmosphere.
Regulation helps ensure that harmful but necessary practices, such as farming, are carried out in a more environmentally responsible way.

4. Government RegulationsAQA

Notes

Governments set quotas to limit the amount of deforestation permitted each year, helping to protect forest ecosystems.
Businesses are often restricted by legal limits on how much carbon dioxide they can release into the atmosphere.
Regulation helps ensure that harmful but necessary practices, such as farming, are carried out in a more environmentally responsible way.

Individual Actions to Reduce Waste

Recycling waste instead of sending it to landfill helps preserve land that would otherwise be damaged.
Reducing unnecessary consumption means fewer toxic chemicals from waste can leach into the surrounding environment.
Individual choices, when made collectively, can have a significant positive impact on biodiversity and ecosystem health.

5. Individual Actions to Reduce WasteAQA

Notes

Recycling waste instead of sending it to landfill helps preserve land that would otherwise be damaged.
Reducing unnecessary consumption means fewer toxic chemicals from waste can leach into the surrounding environment.
Individual choices, when made collectively, can have a significant positive impact on biodiversity and ecosystem health.

Economic Barriers to Conservation

Protecting biodiversity is expensive, and individuals, companies, and governments often prioritise spending their limited funds elsewhere.
Many people and organisations underestimate the economic and ecological benefits that high biodiversity provides.
The cost of conservation means that even when solutions are known, they are not always implemented in practice.

6. Economic Barriers to ConservationAQA

Notes

Protecting biodiversity is expensive, and individuals, companies, and governments often prioritise spending their limited funds elsewhere.
Many people and organisations underestimate the economic and ecological benefits that high biodiversity provides.
The cost of conservation means that even when solutions are known, they are not always implemented in practice.

Standard of Living vs. Environmental Damage

Maintaining a high standard of living requires practices that damage the environment, such as using fertilisers and pesticides to grow enough food.
Mining for rare metals needed in technology such as phones and computers causes significant environmental disruption.
There is a difficult trade-off between meeting human needs and protecting ecosystems, making simple solutions hard to apply.

7. Standard of Living vs. Environmental DamageAQA

Notes

Maintaining a high standard of living requires practices that damage the environment, such as using fertilisers and pesticides to grow enough food.
Mining for rare metals needed in technology such as phones and computers causes significant environmental disruption.
There is a difficult trade-off between meeting human needs and protecting ecosystems, making simple solutions hard to apply.

Conservation Challenges in Developing Countries

In developing countries, people often depend directly on the environment for their livelihoods, making conservation more complex.
Forests may be cut down to provide building materials, firewood for cooking, or land for growing crops — all basic survival needs.
Addressing conservation in developing nations requires understanding the social and economic pressures that drive environmental damage.

8. Conservation Challenges in Developing CountriesAQA

Notes

In developing countries, people often depend directly on the environment for their livelihoods, making conservation more complex.
Forests may be cut down to provide building materials, firewood for cooking, or land for growing crops — all basic survival needs.
Addressing conservation in developing nations requires understanding the social and economic pressures that drive environmental damage.