Role of Vegetation and Sand dune succession Flashcards

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1
Q

Vegetation helps to stabilise coastlines because

A

The plant roots help to bind the soil/sand together reducing the impact of erosion

Wind speeds are reduced by vegetation which decreases erosion and increases deposition

Dead plant material adds organic matter to the sand and eventually leads to the formation of soil

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2
Q

Vegetation is often sparse in coastal environments because

A

Exposure to salty/saline water

High wind speeds
Lack of shade
Lack of nutrients

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3
Q

Pioneer species

A

in the coastal environment are the first plants to grow in the harsh coastal environment, paving the way for other plants that are less able to survive the conditions

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4
Q

Pioneer species:

A

Help to stabilise the sediment
Add organic matter
Increase shade
Trap more sediment

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5
Q

and dune succession is an example of this process
The succession in a sand environment is called a

A

psammosere
Sand dunes are a dynamic environment

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6
Q

Sandy beaches usually have sand dunes at their rear, because of

A

strong onshore winds transporting dried, exposed sand

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7
Q

Sand grains are trapped and deposited against any obstacle……………………. and begin to form…..

A

rubbish, rocks, driftwood

embryo dunes

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8
Q

Dune ridges move inland due to

A

onshore winds pushing the seaward side to the leeward side
It is the interaction of winds and vegetation that helps form sand dunes

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