How Humans Impact Beaches. Seven Mile Beach in Australia Student Resource Center GeologyLink. Houghton Mifflin, College division. Visited 8 August 2008.

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Presentation transcript:

How Humans Impact Beaches

Seven Mile Beach in Australia Student Resource Center GeologyLink. Houghton Mifflin, College division. Visited 8 August /glossary/b.html ... an accumulation of sand or gravel that is part of the shore ... constantly changing as the sediments are moved by waves and currents

US Environmental Protection Agency. Beaches. Updated 1December Visited 7 August Salt Pond Beach Park, Hanapepe, Kauai  They provide many recreational opportunities.  They act as a buffer between people who live on the coast and high winds and waves produced by storms.  They support a variety of plants and animals.

Kamilo Beach, Hawaii 2006 Owen, James. Oceans Awash With Microscopic Plastic, Scientists Say. National Geographic News. 6 May Visited 8 August lastic.html  All kinds of plastic can be found on beaches.  Some plastics are left by people using the beach.  Some plastics wash on shore from the ocean.  The plastics can harm animals that live on or near the beach.  Plastic garbage can also make the beach unusable by people.

What's the Story on Oil Spills? National Oceanic and Atmospheric Administration. Revised on 20 June Visited 8 August Oceanic and Atmospheric Administration Photo by Gordon Richardson, July htm Spills can be caused by:  people making mistakes or being careless.  equipment breaking down.  natural disasters such as hurricanes.  deliberate acts by terrorists, countries at war, vandals, or illegal dumpers.

Heavy beach erosion threatens several condominiums on Singer Island, Florida. Coastal Erosion and Beach Loss in Hawaii. Visited 8 August West-Central Florida Coastal Studies Project. U.S. Geological Survey Center for Coastal & Regional Marine Studies. Updated March 24, Visited 8 August Geological Survey Center for Coastal & Regional Marine Studies  Healthy beaches have plenty of sand.  When sand supply is blocked, beaches will erode.  Constructing jetties, sea walls, or even buildings may block sand movement.

Natural Resources Defense Council. Updated 24 July Visited 7 August Florida Red Tide Bloom of Karenia brevis. (Photo courtesy Woods Hole Oceanographic Institution Harmful Algal Bloom Page)Harmful Algal Bloom Page  Sometimes the water at a beach is not safe  Too many nutrients in the water, because of inadequately treated sewage, farm waste, or fertilizer runoff can cause a red tide. This can be toxic to people and other life forms in the water.  Sometimes even if the water looks normal, it can contain toxins, and people should stay out.

Lake Michigan beach Ocean Conservancy's International Coastal Cleanup. Ocean Conservancy. Visited 8 August me=press_icc&JServSessionIdr011=ubq81hkp21.app46b 1. Recycle plastics. 2. Clean up after yourself when enjoying a day at the beach. 3. Check your own boat if you are traveling on the water. Make sure it isn’t leaking any oil or gas. 4. Realize that building on or near a beach may change it. Study the local conditions before you build. 5. Volunteer to help clean up a beach. 6. Join a beach improvement group. There are a lot from which to choose.