Ocean Resources - PowerPoint PPT Presentation

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Ocean Resources

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Fishing Shipping Oxygen Production Ocean Resources Tourism Climate Buffer Mining Fishing Fish supply about 16% of the world s protein. – PowerPoint PPT presentation

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Title: Ocean Resources


1
Ocean Resources
2
  • Fishing Shipping Oxygen Production
  • Ocean Resources
  • Tourism Climate Buffer Mining

3
Fishing
  • Fish supply about 16 of the worlds protein.
  • Methods nets, trawlers, longlining,
    gillnetting, diving

4
Fishing
  • Gillnetting
  • Longlining
  • Trawling

5
Fishing
  • 60 of fish are used to feed people
  • 40 are used food for fish on fish farms and
    other fish in captivity and fish oil

6
Fishing Our Impact
  • Over fishing we have caught too many fish
  • We need to determine the carrying capacity of
    the ocean how many of each type of fish should
    there be?
  • We need to develop sustainable fishing practices
    fisheries are limited in how many fish and what
    size of fish they can catch
  • Habitat destruction
  • Pollution

7
Shipping
  • moving cargo with ships between seaports
  • Ships used include
  • Tankers
  • Container ships
  • Cable layers
  • Ferries
  • Car carriers
  • Barges

8
Shipping
  • Should be low impact but
  • Accidents happen
  • Pollution from ships air and water
  • Organisms are carried to new habitats in ballast
    water and introduced into new habitats
  • Ships can hit animals

9
Tourism
  • Provides a great deal of income world wide in
    the use 478 billion
  • Problems
  • Construction of resorts destroys habitat
  • Pollution (sewage)
  • Activities destroy habitats
  • Overexploitation of local seafood

10
Mining
  • Provides diamonds, gold, silver, and manganese
  • Destroys ecosystems sediments are dredged up,
    killing animals living in it and interferes with
    photoplankton

11
Climate Buffer
  • The ocean holds and circulates water and heat.
  • The ocean and atmosphere interact to produce
    weather the air gets heat and moisture from the
    oceans
  • Air temperatures worldwide are regulated by the
    circulation of heat by the oceans

12
Oxygen Production
  • Phytoplankton provide as much as 90 of the
    worlds oxygen
  • Some is dissolved into the ocean water
  • Some goes into the atmosphere

13
Human impact
  • How_the_Actions_of_Humans_Threaten_Our_Oceans.asf
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