coastal ecosystems - under threat Flashcards

1
Q

what is the difference between goods and services?

and give example of each:

A
  1. goods - material resource that can be extracted and used. (eg. fish, seaweed, salt, land for settlement and land use and construction materials).
  2. services - general benefits and advantages
    (eg. protection from storms, harbours, shelter, wildlife habitats)
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2
Q

what is the value of coral reefs?

A
  1. their biodiversity (house for many fish)
  2. the protection
  3. the rich fish stocks
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3
Q

how are coral reefs stressed?

A
  1. tourism (people touching them damages them)
  2. pollution
  3. over fishing
  4. quarrying
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4
Q

what is coral bleaching?

A

this happens when rising water temperature linked to global warming occur. (over time)

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5
Q

what are the values of mangroves?

A
  1. home for fish and animals
  2. roots trap material and creates new land.
    3 wood is used as material
  3. protection from storms and rising sea levels.
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6
Q

what are the threats to mangroves?

A
  1. deforestation for timber and because it is believed that they are full of diseases.
  2. removed for building land for tourists (hotels)
  3. fresh water is diverted away from mangroves ( for tourist uses)
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7
Q

what are the values of salt marshes?

A
  1. home for animals (crabs)
  2. coastal protection
  3. trap organic matter
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8
Q

what are the threats to salt marshes?

A
  1. abused by people
  2. land is reclaimed for:
    industry
    farmland
    port development
  3. industrial pollution ( oil , waste products from ports…)
  4. agricultural pollution (fertilizers and pesticides)
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9
Q

what is the value of coastal sand dunes?

A
  1. coastal protection
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10
Q

what are the threats to coastal sand dunes?

A
  1. extremely fragile
  2. people destroy them (horse riding, biking)
    if this happens plants (eg. marram grass is also destroyed and cant bind the sand well. leading the wind to blow the sand away).
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