Fresh Water Ecosystem Essay

959 Words 4 Pages
Register to read the introduction… Plant species adapted to the very moist and humid conditions are called hydrophytes. These include pond lilies, cattails, sedges, tamarack, and black spruce. Marsh plants also include such species as cypress and gum. Wetlands have the highest species diversity of all ecosystems. Many species of amphibians, reptiles, birds can be found in the wetlands. Wetlands are not considered freshwater ecosystems as there are some, such as salt marshes, that have high salt concentrations these support different species of animals, such as shrimp, shellfish, and various grasses. Without freshwater ecosystem you and I would not be alive. Freshwater ecosystems are important because they provide us water for drinking, and energy. One way that people use rivers is to produce hydroelectric power. As water passes through a dam, and into a river below electricity is produced. A device inside the dam called a turbine uses magnets, metal, and the movement from the water to produce electricity. When a dam is built, an artificial lake is created behind the dam. Dams can be viewed as good and bad. Wetlands are also an important type of freshwater ecosystem. They may be nasty and sometimes smelly, but they provide critical …show more content…
As I stated before the use of dams can also be bad for freshwater ecosystem. The creation of dams and water diversion systems blocks migration routes for fish and disrupts habitats. Water withdrawal for human consumption shrinks and degrades freshwater habitats. Runoff from agricultural and urban areas really hurt water quality. The draining of wetlands for development kills off habitats. Overexploitation is also a major problem. Humans killing off species for food and game and even clothing. Overexploitation and pollution threaten groundwater supplies. Invasion of exotic species can harm native animals and plants. Because freshwater ecosystems are found near human habitat the human change to carbon and nitrogen cycles have a direct effect to the freshwater ecosystem. Whenever fertilizer is applied to farmland to help crops grow, this adds pollutants to the soil. If soil erodes, the pollutants are transported and deposited in the nearest body of water. This can cause algae to overgrow in a process called eutrophication. The lake will run out of oxygen as the algae die off and bacteria begin their decomposition. Fixed organisms are greatly affected. Later, it can result in fish kills and smelly

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