1.1.10 - the impact of human activity on coastal landscape systems

Question 1

what are some positive impacts of human activity on coastal processes and landforms?

Answer 1

• creating coastal world heritage sites
• marine reserves

Question 2

what is an example of a coastal world heritage site?

Answer 2

the Great Barrier Reef

Question 3

what is managed coastal realignment?

Answer 3

• allowing the sea to flood a previously protected area of land, which encourages natural environmental processes

Question 4

what are the benefits and disadvantages of managed coastal realignment?

Answer 4

• encourages natural habitats
• reduces cost to keep protecting area in the long-term

BUT
- poor public perception
- could fail
- not suitable for all environments

Question 5

what are some negative impacts of human activity on coastal processes and landforms?

Answer 5

offshore dredging:
- this is very destructive to marine ecosystems and the environment
- releases toxins from machinery

BUT
-good for sea defence

Question 6

what is offshore dredging?

Answer 6

• the removal of unwanted things from the seabed or riverbed

Question 7

how do sand dunes get eroded by humans? why?

Answer 7

• urbanisation (housing)
• resources (glass making)
• retraining (tourism)

Question 8

what occurs to dunes after they have been repurposed?

Answer 8

• available sand in system is trapped so it becomes immobile and does not continue to make dunes
• creates blowouts due to erosion

Question 9

what are some strategies used to manage the impacts of human activity on coastal landforms?

Answer 9

creating a integrated coastal zone:
deals with the coastline as a whole and creates plans that consider and meets the needs of everything (people, environement)

Question 9

what is an example of strategies used to manage the impacts of human acitivty on landforms?

Answer 9

BARTON ON SEA
- sea defences are present due to the property value
- unstable cliffs due to permeable rocks mean that new sea defences need to be implemented on top of the old.

Question 11

what are the positive/negative impacts o human activity of one coastal landscape?

Answer 11

protection of cliffs by management strategies - groynes, sea walls

management and conservation of dune systems - areas not for public use, replanting, boardwalks

conserving coral reefs

Question 12

what is a social impact of coastal erosion?

Answer 12

magnitud varies, affects local communities recreationally