Pressures On Grassland Ecosystems Flashcards

0
Q

Fragmentation: Some animals may be unable to

A

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

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1
Q

Main pressures: (4)

A

Urbanisation,
Agriculture,
Hunting,
Fragmentation.

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2
Q

Fragmentation: Increased gaps between

A

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

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3
Q

Hunting:

A

Poaching of native animals threatens some species with extinction.

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4
Q

Agriculture: The biodiversity of grasslands

A

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

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5
Q

Agriculture: Nature vegetation has been

A

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

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6
Q

Agriculture: Hedgerows are important

A

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

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7
Q

Agriculture: Fertilizer leads to the loss of

A

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

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