Coast Terms (Especially 4 Geography As)

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Term

Definition

Detail

Succession

Changes that take place in plant communities over time as conditions change

Psammosere

A plant succession that developes on sand dunes

Pioneer Species

Species that colonise pristine environments

They need not be very tolerant and flexible eg. SPARTINA on mud flats

Seral Stage

Stage in succession from colonisation to climax

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Sub-climax

Plant community that is inhibited from reaching its climax by natural factors

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Plagio-climax

A stable community formed as a result of human activity

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Climax

A stable community at the end of a succession that is in balance with prevailing abiotic conditions

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Prisere

A succession developing from a bare surface

i.e Mud flats

Colonisation

The arrival and establishement of plants in an area

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Species

Variety of plant that can interbreed with other memebers of a plant group

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Successional Processes

Processes that take place in a succession such as colonisation

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Mud Flats

Areas of fine silt and sediment deposited by marine action in sheltered zones

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Creeks

Shallow tidal inlets associated with mud flats

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Embryo Dune

Accumulation of sand that preceeds stable dune formation on which plant colonisation can begin

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Fixed dune

Dune that has been stabalised with a climax plant community of psammomere

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Dune degradation

Dune damage that often begins with "blow-outs" - frequently initiated by human action

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*Coast Terms* (Especially 4 Geography As)

Coast Terms (Especially 4 Geography As)