I would like to do my research project on the Great Garbage Patches and their effects on the sea and wildlife in the oceans surrounding them. My thesis looks like this right now:
Although plastic and Styrofoam products have made life easier in the world, they are contaminating the oceans because plastic litter is finding it’s way out into the ocean, the materials are then breaking down and allowing toxic chemicals to leach into the water and plastic pieces are making their way into the bellies of birds and other animals.
- Large amounts of plastic and Styrofoam are finding their way to the ocean
- Boaters dump trash into the ocean
i. In 1975, the National Academy of Sciences estimated that ocean-based sources, such as cargo ships and cruise liners, dumped 14 billion pounds of garbage into the ocean.
ii. In the Cayman Islands, the government has traced milk cartons on shore to a passing cruise ship.
- Rain and wind carry litter to local rivers that eventually dump into the ocean
i. Wind can carry trash from landfills into nearby rivers or storm drains.
ii. Most storm drains empty directly into rivers, lakes or the ocean.
- Plastic and Styrofoam break down and releases toxins into the water
- When plastics are exposed to the rain, sun and other environmental conditions they begin to decompose.
i. Plastics that we use daily are quite stable, but once out in the ocean, they are exposed to rain and the sun.
ii. Once in the ocean, it only takes a year for them to start breaking down.
- BPA, styrene and PS oligomer are now found in small quantities in the ocean which causes hormonal imbalances in animals
i. When Styrofoam decomposes, it breaks down into three materials not found in nature; styrene monomer, styrene dimmer and styrene trimer. These are known to cause cancer.
ii. When plastic breaks down, it produces BPA and PS oligomer known to cause hormonal problems in low dosages.
- Each year as much as 150,000 tons of plastic and Styrofoam debris, wash up on the shores of Japan alone.
- Birds and other animals are eating plastic that looks like fish and plankton
- Plastic marine debris affects at least 267 species worldwide, including 86 percent of all sea turtle species, 44 percent of all sea bird species, and 43 percent of marine mammal species.
i. Animals are known to eat plastic bags in the ocean because they look like jellyfish.
ii. Every year thousands of albatross chicks are dying from starvation and choking because their parents are feeding them plastic that looks like food.
- Several countries have banned the use of plastic bags or made them less desirable by placing taxes on them
i. Bangledesh was the first to ban plastic bags in 2002, followed by Ireland and Taiwan who placed a tax on plastic bags. Australia, France, Italy and China have also banned plastic bags.
ii. The United States has made no attempt, as a whole, to ban plastic bags, but New York and San Francisco, and some grocery store chains like Trader Joe’s and Albertson’s, have taken steps to help the reduction of plastic bag use.
Filed under: Part 1- Research Proposal, Pollution, Research Project, Spring 2012 | Leave a Comment »