Saturday, May 14, 2011

Blog 7 -- The Great Barrier Reef

                            


Video #1: What is coral bleaching?
http://www.youtube.com/watch?v=iW8nCALx5iA&feature=related

1. What is a polyp? What does a polyp need to be considered coral? 
A coral larva is a tiny animal that floats out in the ocean water for up to thirty days until it has settled on the ocean floor. Once it settles, it becomes a polyp, which looks like an upside-down jellyfish. Tiny algae called zooxanthellae move into the polyp and multiply, giving the polyp its food and its astonishing color. After a while, the polyp grows and multiplies, creating more and more polyp colonies, which we recognize as coral.

      2. What types of things are coral sensitive to in the ocean? 
      Coral are very delicate creatures and are sensitive to changes in the water. If there is a temperature change of even a few degrees, the coral can become agitated and coral bleaching occurs.

      3. When does coral bleaching occur? 
      Coral bleaching occurs when the temperature of the ocean remains above its normal temperature for too long. The coral senses the temperature change in the water and becomes agitated. The zooxanthellae leave to find another coral, and the coral loses its main source of food and coloration turning it into a pale, ghostly color. Eventually, without food, the coral will die. However, if the temperature of the water returns to its previous state soon enough, the coral will recover.

      4. Why do scientists believe coral bleaching is occurring more now than ever? 
      Scientists think that coral bleaching is occurring more now than ever because of climate change.

      5. List three ways people can reduce their impact to climate change. 
      Many things affect climate change. People can reduce their impact to climate change by saving energy by turning off unused lights and appliances, avoiding unnecessary car journeys, and reusing and recycling products whenever possible.

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      Video #2: Why should we care about climate change/destruction of our reefs?
      http://www.youtube.com/watch?v=Wcoyj2VPCOM

      1. How many species of fish, hard coral, soft coral, sea birds, and shore birds are there in the Great Barrier Reef? 
      The Reef is home to 1500 species of fish, 360 species of hard coral, one-third of the world’s soft corals, 22 species of sea birds, and 32 species of shore birds.

2. What is responsible for warming our oceans? 
      Climate change is responsible for warming our oceans. Warmer oceans cause coral to become bleached and die.

3. How does increased flooding affect the reefs and the birds and fish that live there?  
      Increased flooding pollutes the reef and forces fish to move to cooler offshore waters, which means less food for sea birds.

4. List three additional ways that people can reduce climate change. 
      Three other ways people can reduce climate change are buying environmentally sustainable products, opening windows instead of using air conditioners, and drying clothes on the line.

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      Videos #3/#4: Educating children about the effects of climate change
      http://www.youtube.com/watch?v=RnqJMlnH5yM&feature=related
      http://youtube.com/watch?v=aEdoizgeNJk&feature=related

      1. List two benefits and two drawbacks to using this kind of media to teach this information.
      Both of these videos are very good at grabbing people's attention with their bright colors and simple cartoons. The simple pictures easily catch kids' eyes. Also, the information is not too scientific. The dialogue and narrations aren't filled with intellectual jargon, but are filled with small, easily identifiable words that make the videos easy to understand. On the other hand, the videos should not only focus on little kids as their intended audiences, but also other people, such as teenagers and old people. Furthermore, in the first video, the main character, Hermie the hermit crab, doesn't spend a lot of time on the main reason for his problem. Instead, the whole video is devoted to teaching children about crab homelessness.

      2. Videos that I feel would be more informational:
      
      Adults from Australia: http://www.youtube.com/watch?v=cbN161yBBGA
      This video is not only informational, but it also specifies the problems the Great Barrier Reef is going through. Furthermore, the video stresses the importance of the Great Barrier Reef at home in Australia as well as all over the world.

      Foreigners not from Australia: http://www.youtube.com/watch?v=liG_ZV289VM
      This video not only specifies what problems are occurring in the Great Barrier Reef, but also what we can do to help.It shows actual coral reefs before and after bleaching, and also interviews scientists and people trying to help. For foreigners not from Australia, it can open their eyes to the issues worldwide.

      Tourists visiting the Great Barrier Reef: http://www.youtube.com/watch?v=inGov_ipVKk&feature=player_embedded#at=16
      This video provides attention-grabbing pictures and information. Although it may stretch the truth a bit at some parts, the propaganda will make the tourists want to help however they can.


           

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