Great Lakes freshwater ecosystem

Great Lakes freshwater ecosystem
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  • Did you know that all across Michigan we have numerous environmental issues, most lye in the Great Lakes   
  • The Great Lakes are a freshwater ecosystem that is home to many plants and animals in the food chain as well as many people. 
  • Exactly right! For example, if a fish ate a toxic chemical such as DDT then a Bald Eagle ate that fish, not only would the fish have that chemical in their system, so would the Bald Eagle, this would cause the bald eagle's eggs to have a soft and easily puncturable shell.   
  • With the large amounts of people in the Great Lakes ecosystem also comes pollution that can be harmful to the foodchain. 
  • There are two types of pollution, point-source pollution, and non-point-source pollution, point- source pollution is pollution from one spot, an example would be a discharge pipe at a sewage plant leading straight into a lake, non-point-source pollution, on the other hand, is pollution from many different places, an example of this would be air pollution from factories. 
  • Another problem caused by people moving into the Great Lakes ecosystem is building on top of and destroying the natural habitats of plants and animals. 
  • This is called habitat loss, an example of habitat loss is when people cut down trees that are the homes to many animals, like birds and squirrels. 
  • In addition to human ruining the Great Lakes ecosystem, other animals are too, these animals are non-native animals known as invasive species. Invasive species have been found to steal native species food, be a disruption to the ecosystem and the people in it, and harm native species.   
  • This is an example of a "Sea Lamprey" sucking the blood out of the " Native Trout." 
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