Community and Succession 5.7

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What is Primary Succession?
Introduction of plants/animals into areas that have no previously supported a community
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What is Secondary Succession?
Reintroduction of organisms into a bare, previously occupid, habitat. E.g. Re-colonisation after a fire
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What is a Climax Community?
A community that has reached equilibrium with its enviroment and no further changes occur.
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What are the stages of succession known as?
Seres
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Example of Primary Succession.
Bare rock > Algae and Lichens > Lichens erode rock > Rock weathers, dead organic material accumulates > Primative soil forms > Wind blown spores brings moss > Grasses establish in developed soil > Deep rooted shrubs in soil build up > Trees establish
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What are the first species to colonise an area known as?
Pioneer species
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What assists in colonisation during Secondary Succession?
Seeds/Spores/Reproductive plant organs may remain in the soil, Migration of animals
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What kind of Human interference can affect succession?
Grazing of sheep, Farming of land, Deforestation, Soil erosion.
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Community Management - Heather and Grouse
Pioneer stage best for feeding, Building stage best for nesting. Managed to prevent passing into mature/degenerate stages which are unsuitable for Grouse breeding.
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Other cards in this set

Card 2

Front

What is Secondary Succession?

Back

Reintroduction of organisms into a bare, previously occupid, habitat. E.g. Re-colonisation after a fire

Card 3

Front

What is a Climax Community?

Back

Preview of the front of card 3

Card 4

Front

What are the stages of succession known as?

Back

Preview of the front of card 4

Card 5

Front

Example of Primary Succession.

Back

Preview of the front of card 5
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