Natural stresses in ecosystems
- Created by: Share63
- Created on: 11-09-18 14:22
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- Natural stresses in ecosystem
- GBR
- 2.Tropical cyclones
- Increase sediment and turbidity levels
- immediate effects
- 3.Crown of Thorns starfish
- Causes widespread damage to reef when in plague proportions
- 1.Rising sea levels
- Reefs grow when sea levels are high
- If sea levels rise slowly corals can keep pace and keep growing
- Reefs grow when sea levels are high
- 2.Tropical cyclones
- Intertidal wetlands
- 1.Salinity
- Wetlands Located in coastal estuaries
- Must be able survive salt water,fresh water and brackish water
- Plants have adaptations
- Grey Mangroves
- Peumatophores exclude salt
- Secrete salt
- Waxy cuticle minimises water loss
- Grey Mangroves
- Plants have adaptations
- Must be able survive salt water,fresh water and brackish water
- Wetlands Located in coastal estuaries
- 2.Tidal movements
- Transports organic material that is deposited on floor -forms food chain for crabs,and snails
- Pneumatophores can exist under tidal water for short time
- If magnitude or frequency of tidal inundation changes-roots can be submerged for too long
- 1.Salinity
- Gradual
- Species cope through adaptation and natural selection
- GBR
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