• Share
  • Email
  • Embed
  • Like
  • Save
  • Private Content
The Dying Ocean
 

The Dying Ocean

on

  • 1,787 views

 

Statistics

Views

Total Views
1,787
Views on SlideShare
1,785
Embed Views
2

Actions

Likes
1
Downloads
29
Comments
0

1 Embed 2

http://www.slideshare.net 2

Accessibility

Categories

Upload Details

Uploaded via as Microsoft PowerPoint

Usage Rights

© All Rights Reserved

Report content

Flagged as inappropriate Flag as inappropriate
Flag as inappropriate

Select your reason for flagging this presentation as inappropriate.

Cancel
  • Full Name Full Name Comment goes here.
    Are you sure you want to
    Your message goes here
    Processing…
Post Comment
Edit your comment

    The Dying Ocean The Dying Ocean Presentation Transcript

    • The Dying Ocean Nelson Le Linneah Gomez William Ly-Lee Natalia Becker
    •  
    • Overfishing is Cruel
      • Overfishing- when organisms are being caught faster than they can reproduce
      • 200 million people depend on fish
    • Hooked on Shark
      • Sharks play a vital role in maintaining the health of marine ecosystems
        • Over one hundred million sharks are killed by commercial fisheries each year
        • Harvested for their fins, meat, or liver oil
    • What effects on the marine ecosystem of losing one or more shark species?
      • It is recognized that removal of top predators in terrestrial and marine ecosystems can cause a ripple effect on organisms
      • The problem lies with predicting what the effect may be
        • The loss of C. carcharias (Great White)
          • might result in population explosions of seals, sea-lions, and other sharks
            • Increases in these species, can cause the ecosystem to shift off balance
    • Cause
      • Commercial fishing has the potential to severely impact shark populations in almost all habitats
        • Sharks are being hunted for their fins and their meat
    • Decline in the Ocean
      • Two of the greatest threats to sharks are finning and bycatch
        • Fins: 26 to 73 million per year
        • 50 million sharks are caught unintentionally as bycatch
    • Reason Behind the Slaughter
      • Many of the fishing industry stated that killing these animals would lower shark attack
    • Finning not Fishing
      • Killing sharks for their prized fins
        • Some ranging 100 to 1000 dollar for one fin
      • Product:
        • Shark Fin Soup
    • Bycatch…Catching the Drift?
      • When commercial fishermen catch animals that are not their desired catch, they call those animals "bycatch."
        • These unwanted animals are then thrown back to the ocean dead, dying, or injured.
    •  
    • One Effect Leads to Another
      • “ The study, by Ransom A. Myers of Dalhousie University in Halifax, Nova Scotia, and colleagues, is among the few to document the cascading effects that the loss of a top predator can have on a marine ecosystem. In the absence of large sharks, the researchers say, the smaller sharks, skates and rays that they feed upon have thrived. In turn, the study shows that as one of these middle links in the food chain, the cownose ray, has become more abundant, it has wiped out scallop beds in North Carolina.” (New York Times)
    • Long Term Effect
      • The loss of biodiversity
      • Consumption of Sharks will decline
    • Why are sharks so important?
      • keeps our oceans clean and helps to control populations of other ocean animals.
        • Without a top predator like sharks, animals lower on the food chain would experience a population explosion, potentially devouring their food sources until there is nothing left.
    • Brief History
      • Records shows that form 1970s to 2005 reveals a dramatic decline in the shark populations
        • Tiger sharks and hammerheads have declined more than 97 percent since the mid-1980s
    •  
    • Common Sense
      • Increase awareness on the need for shark conservation
        • Management of shark fisheries, encouraging the government to address shark bycatch problems, and reducing the demand for shark products
      • Pressing for a shark finning ban
    • Modest Proposal
      • Creating Shark havens
        • Allowing the sharks to:
          • Reproduce
          • Feed
        • Protection form man
    • Organizations
      • http://oceana.org/north-america/home/
      • http://www.animalsvoice.com/
      • http://www.sharkprotect.com/links.cfm
      • http://www.sharktrust.org/
    • Will Sharks soon become our forgotten memory?
    •  
    •  
    • Sites
      • http://oceana.org/north-america/home/
      • http://www.guardian.co.uk/environment/2008/feb/18/conservation.aaas
      • http://www.gettyimages.com
      • http://news.yahoo.com/s/livescience/20080522/sc_livescience/majorityofoceanicsharkspeciesfaceextinction
      • http://www.bite-back.com/shark_conservation.htm