Light Pollution Presentation
Published on Nov 18, 2015
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Light Pollution
By: David Randall
As you know there are many types of pollution, water, air and sound. Today I am going to share with you an overlooked pollution. Light Pollution.
What is Light Pollution?
- Caused by artificial light
- Sources may include: Street lights, commercial buildings, and cars
How many of you have ever heard of the term light pollution? Light pollution is caused by an overwhelming amount of artificial light in a certain area. Some sources of light pollution may include, street lights, commercial buildings, and cars.
Photo by BeautySeeer
The left side picture was taken in 1970, and the right side picture was taken in 2012.
The two pictures were taken roughly at the same location. The one on the left was taken in 1970 while the one on the right was taken in 2012. As you can see the picture on the left has little or no light coming from outside sources. On the other hand, the picture on the right has a lot of artificial light sources. In most cities, light pollution has gotten worse since the 1970's.
What does Light Pollution have to do with baby turtles?
Let me give you one example on how light pollution affects a specific animal. This animal is the loggerhead turtle, and is located on the shores of South Carolina. Every year the loggerhead turtle lays its eggs in the sand. When the eggs hatch during the night, it is important that the baby turtles get to the ocean to survive. The way the baby turtle finds the ocean, is by following the moon light to the water. If there is any other artificial light sources, the baby turtle could get confused and walk towards the brighter light. For example when I go on vacation at Hilton Head, I have to close the curtains at night, so the baby turtle won't crawl up to the hotel and die.
The Department of natural resources in South Carolina, states, "Uniformed visitors using flashlights at night can cause females to avoid certain areas, and beachfront lighting will disorient hatchlings" This means that the amount of light coming from an area can affect the life of a baby turtle.
The Department of natural resources in South Carolina, states, "Uniformed visitors using flashlights at night can cause females to avoid certain areas, and beachfront lighting will disorient hatchlings" This means that the amount of light coming from an area can affect the life of a baby turtle.
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High Cost Solution
There are two ways to solve this light pollution problem. One is a high cost solution, and the other is a low cost solution. The high cost solution would be to change from the bad example in the picture to the good example. This would prevent the light from spreading into unwanted zones. This is high cost solution because it would take a lot of money to replace all of the street lamps.
Low Cost Solution
The low cost solution would be the cheaper option to do. The low cost solution involves telling people about light pollution, and trying to get them to take action. For example, here is a bumper sticker that helps people realise that turing out the lights, can help save a baby turtles life. This solution would be cheaper and quicker to implement than the higher cost solution.
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Now that you know a little bit about light pollution it is up to you to decided id you want help the baby turtles make it to the water, and live another day.
Citations (1)
- Bellucci, Joel. "Light Pollution." Turtle Time. N.p., n.d. Web. 29 Apr. 2015.
- The view almost all of us had from home only 25 - 50 years ago... and what the vast majority of Americans now see from their backyard., Springfield, MA. Personal photograph by anonymous photographer. 2014.
Citations (2)
- DeAngelo, Julianne. Light Pollution. Digital image. Penny4Nasa. Space Advocates, 9 July 2013. Web. 21 Apr. 2015.
Citations (3)
- Baby Turtles. 2011. Hilton Head Island, Hilton Head.
- Murphy, Sally, and DuBose Griffin. "A Loggerhead Turtle on the Mayo Coast." The Irish Naturalists' Journal 7.5 (1939): 144. LoggerHead Turtle. Web. 28 Apr. 2015.
