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Succession of habitats

Age 16-18 (A-level)

A fully illustrated, hyperlinked, animated powerpoint presentation (15 slides) introducing key ideas in succession. Primary succession from bare rock to forest on Dartmoor, Devon is used as an example. Primary/secondary/deflected succession are all introduced along with key ideas. Includes an animated summary slide and a task slide to guide students to explore other examples.



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Published 14 Jun 2009

Contributed by Toby Tufton — Experienced contributor

2 people are following this contributor Average rating: 1 2 3 4 5

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Overall 1 2 3 4 5

Originality 1 2 3 4 5

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2 reviews

Louise Edgeworth - Experienced contributor

Fabulous photographs, really brought the subject to life.

Useful? Yes / No 1 2 3 4 5

Abigail Laing - Admin

A beautifully presented resource, with photos to illustrate stages of succession and clear navigation and explanation throughout - well worth downloading.

Useful? Yes / No 1 2 3 4 5

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Extracts from this resource

Succession

1SuccessionSome species of organism are gradually replaced by othersSummaryExampleAll photos taken on Dartmoor by TT 2008/9Task2Bare rock
If water is available
colonised by lichens
which arrive as spores
NEXT
3Lichens are symbiotic
Algae
- Photosynthesise
Fungi
- Absorb nutrients using hyphae
- Dissolve rock with acid
Dust and decaying lichens gather and form a soil
NEXT
4Mosses can survive in very little soil
Grow in clumps
Trap more soil and water
NEXT
5Ferns arrive as spores
drought resistant with a waterproof cuticle
Early flowering plants (e.g. clover) are often nitrogen fixing
NEXT6Tall grasses out-compete the ferns and mosses7Eventually the soil is deep enough for hawthorns and elders
Some early trees e.g. (Alder) fix nitrogen8These smaller trees are eventually replaced by the climax community usually woodland of some sort9Animals show succession too
Follows plant succession
Mites feed on dead lichen
Worms survive in moist soil
Many insects need flowers
Predators e.g. dragonflies / birds / frogs need insects
Animals10Animals show succession too
Follows plant succession
Mites feed on dead lichen
Worms survive in moist soil
Many insects need flowers
Predators e.g. dragonflies

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