How Human Activities Reduce Land for Wildlife Revision Notes | GCSE OCR Foundation Biology

What this lesson covers

Explore how building, quarrying, farming and waste dumping reduce available land for plants and animals, and examine the specific impact of peat bog des...

• Explain how human activities reduce land available for wildlife
• Describe the impact of building, quarrying, farming and waste disposal on habitats
• Evaluate the environmental consequences of peat bog destruction
• Calculate the carbon dioxide released when peat is burned or decays

Key ideas to keep in view

Use this lesson to stay inside B6.1 Monitoring and maintaining the environment while connecting the detail back to the wider B6: Global challenges topic.

• B6: Global challenges
• B6.1 Monitoring and maintaining the environment
• GCSE OCR Foundation Biology

Lesson notes preview

Read the core explanations from How Human Activities Reduce Land for Wildlife before testing yourself from memory.

• Every day, wild spaces disappear. A forest becomes a housing estate. A meadow becomes a car park. A wetland becomes a shopping centre. Where do the animals and plants go when their homes vanish?
• This isn't just about saving cute animals. When we reduce land for wildlife, we're dismantling the natural systems that keep our planet healthy. Let's examine exactly how human activities are shrinking the wild world.
• Humans reduce available land for wildlife through four main activities. Each one transforms natural habitats into human-dominated landscapes.
• The construction of houses, roads, factories and infrastructure that permanently converts natural habitats into urban areas.
• When we build, we don't just cover the land with concrete. We fragment habitats, creating isolated patches too small to support viable populations. A motorway through a forest doesn't just remove trees - it splits the remaining woodland into disconnected islands.
• The extraction of stone, sand, gravel and minerals from the ground, creating large excavated areas that destroy existing ecosystems.
• Quarries strip away entire hillsides and valleys. The noise, dust and heavy machinery drive wildlife away from surrounding areas too. Even after quarrying stops, the landscape rarely returns to its original state.
• Agricultural practices that convert natural habitats into crop fields and livestock pastures, often using pesticides and fertilisers that affect surrounding ecosystems.
• Modern farming creates biological deserts. Monoculture crops replace diverse plant communities. Hedgerows disappear to make fields bigger. Pesticides kill insects that birds and mammals depend on for food.
• The dumping of household, industrial and agricultural waste on land, contaminating soil and water while making areas unsuitable for wildlife.

Continue through the topic

Move to the related lessons or back to the topic page when you need the wider sequence before exam-style practice.