Pressures On Grassland Ecosystems

Question 0

Fragmentation: Some animals may be unable to

Answer 0

Survive if the size of their habitat is reduced below certain limits.

Question 1

Main pressures: (4)

Answer 1

Urbanisation,
Agriculture,
Hunting,
Fragmentation.

Question 2

Fragmentation: Increased gaps between

Answer 2

Ecosystems may make dispersal for breeding, recolonisation or migration difficult or impossible.

Question 3

Hunting:

Answer 3

Poaching of native animals threatens some species with extinction.

Question 4

Agriculture: The biodiversity of grasslands

Answer 4

Decreases as the intensity of production or exploitation by humans increases.

Question 5

Agriculture: Nature vegetation has been

Answer 5

Replaced with cereal crops and domestic livestock have replaced native herbivores.

Question 6

Agriculture: Hedgerows are important

Answer 6

Wildlife habitats, however these have been removed to make room for larger machinery.

Question 7

Agriculture: Fertilizer leads to the loss of

Answer 7

Stress tolerators plants and an increase in competitor species of plants. This usually leads to a reduction in species diversity.