Sand dunes
- Created by: RaCHeLsEEd
- Created on: 28-10-15 21:40
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- Sand dunes
- Embryo dunes
- Fore dunes
- Yellow dunes
- Fore dunes
- How they form
- sand get trapped around debery on the beach and collects
- over time the amount of sand builds up and starts to form a dune
- sand get trapped around debery on the beach and collects
- Pioneer plant
- Sea couch
- very first plants that start to grow on newly formed dunes
- can grow in xerophytic environments (no water)
- resistant plants
- little organic water
- salt torelrant
- more akalian soil
- CaCO3 is alkali and there are shells which are made of CaCO3
- sea couch is out competed by marram grass (sucession)
- leaves open and close for water
- better adapted to surrondings
- deep roots can reach water table (fix roots)
- Xerophytic enviroment
- Heather succeeds marram grass
- high humus level in sand/soil
- organic matter makes soil
- there's been more organic matter so more soil
- more organic matter makes soil more acidic
- climax species
- birch (trees) or gorse
- The sea progrades backwards, pushing the sea into itself
- Embryo dunes
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