2. Management of Resources
Humans obtain resources from the Earth.
This has led to the destruction of habitats.
This has led to a decrease in species diversity.
Conservation is important to prevent the loss of
resources and wildlife.
Agriculture
Forestry
Fish stocks
Resources are managed for:
SPECIES DIVERSITY:
variety of species present in a given area.
3. Give 2 examples of
poor management of
natural resources
and suggest possible
improvements.
Describe how the
effect of poor
management of
natural resources
can produce
problems.
GROUP ACTIVITY
4. Poor management of resources
• Overfishing in the North Sea
• Destruction of rainforests
• Overuse of land, leading to
desert soils.
Solutions
• Have fish quotas, or
increase net mesh to allow
smaller fish to survive
• Produce food more
efficiently to limit areas
being logged for
agriculture.
• Set aside areas as national
parks.
• Use different agricultural
practices, such as crop
rotation and natural
fertilisers.
5. Overfishing in North Sea
Solutions?
Have fish quotas
Increase net mesh size to allow smaller fish to survive
http://www.telegraph.co.uk/news/uknew
s/1575561/Town's-last-fishing-boat-
fights-tide-and-time.html
Great
Yarmouth
2008
1 boat 1955
>1000
boats
7. Deforestation (inc rainforests)
Problems:
Reduces photosynthesis which removes CO2
Reduces the rate at which carbon dioxide, CO2 , is “locked up” in wood
Satellite images show logged areas
are much greater than thought.
http://www.greenpeace.org.uk/for
ests/problems
8. These statements about the effects of
deforestation are all mixed up.
Put them in the correct order.
A. Trees are removed.
B. New trees grow more slowly and there are less species.
C. Soil is now less fertile and the unprotected surface
becomes dry and compacted.
D. Trees do not protect soil so nutrients are washed out
by the rain.
E. It is hard for rain to soak into the soil, so flooding may
occur.
9. Overuse of land, leading to desert
soils
Solutions?
Use different agricultural practices such as crop rotation and natural
fertilisers
Plant shelter beds of trees, grass cover, develop irrigation schemes
http://www.ypte.org.uk/
environmental/desertifi
cation/22#
10. Managing land for agriculture
Farmers need to control:
Nutrient supply
Addition of fertilisers – natural and artificial
The habitat of the plant
Clearing land of competitors (kills weeds)
Cultivation (fertiliser, soil pH, water content)
Erects fences (keeps out herbivores) and scarecrows whilst
planting (birds)
Sprays crop with pesticides (kills insects, fungi)
