Question: What is meant by ‘eutrophication’? Explain with reference to the severity of the problem in your own country. Eutrophication is the ecosystem response to the addition of artificial or natural substances to an aquatic system. (Schindler‚ David and Vallentyne‚ John R. 2004)Most people don’ t really know about it‚ so I’m writing this essay to tell some facts about two major causes‚ the bad effect in my country – China and the prevention and reversal and how can the algae be used to make
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Overloading in Fresh Waters 1. Nutrients and Nutrient Overloading 2. OM and BOD Overloading river N and P cycles‚ revisited. The concentrations of N‚ P C and O in the hydrosphere are intricately related by the Redfield relationship. N (+)/P (+) = 16 CO2 (+)/N (+) = 6.6O2(+)/N(-) = 8.6 CO2 (+)/P (+) =106 O2(+)/P(-) = 138 O2 (+)/CO2 (-) = 1.3 Atmosphere exchanges. Nitrogen:¡°fixed¡± N occurs in a number of gaseous forms that are easily exchanged to the atmosphere. Natural sources of atmospheric"fixed"
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How Healthy is the Conodoguinet Creek? Acid rain and Eutrophication are the two main pollution in Central Pennsylvania. Acid rain is a bad type of rain whiles eutrophication is the process where water bodies receive excess nutrients. Our mission here is to determine whether the Conodoguinet Creek is polluted or not. My hypothesis before the experiments was if there was to be signs of acid rain and eutrophication‚ then it means the Creek is polluted We went to the creek
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Scenarios 1: Characterize the differences among untreated‚ primary-treated‚ and secondary-treated sewage and compare and explain the effects of dumping each type on the eutrophication of a pond and a fast-moving river. Answer 1: The general idea of wastewater treatment plants is to decrease the biochemical oxygen demand (BOD) and chemical oxygen demand (COD) in the runoff into the lakes and streams‚ and do so by meeting the standards of the state and federal government. The purpose of the treatment
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chloride (Cl-) ions are important indicators of the salinity of a water system‚ and also affect the taste of water * Magnesium and calcium ions are indicators of water hardness * Phosphate and nitrate ions need to be monitored to prevent eutrophication of a water system * Cations * Atomic Absorption Spectrometry (AAS) is the preferred technique used to identify concentration of metal ions * Sodium [Na+]‚ magnesium [Mg2+]‚ calcium [Ca2+]‚ potassium [K+]‚ iron (III) [Fe3+]
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freshwater supplies are a key challenge facing humanity. At the end of this lesson‚ you should be able to: Define water pollution and discuss some of the common water pollutants. Discuss selected water pollution problems‚ including cultural eutrophication and acid mine drainage. Describe point and nonpoint sources of water pollution and the difference between them. Describe how groundwater becomes polluted and treatment methods for polluted water. Discuss important issues related to water quality
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to the bacteria consuming the organic plant waste and subsequent low dissolved oxygen levels(Hooper‚1998). The addition of large quantities of phosphates to waterways accelerates algae and plant growth in natural waters (Hooper)‚ enhancing eutrophication and depleting the water body of oxygen. This can lead to fish kills and the degradation of habitat with loss Boyington 5 of species. Large mats of algae can form and in severe cases can completely cover small lakes. Dying plants and algae
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cultural eutrophication Overnourishment of aquatic ecosystems with plant nutrients (mostly nitrates and phosphates) because of human activities such as agriculture‚ urbanization‚ and discharges from industrial plants and sewage treatment plants. See eutrophication. dissolved oxygen (DO) content Amount of oxygen gas (O2) dissolved in a given volume of water at a particular temperature and pressure‚ often expressed as a concentration in parts of oxygen per million parts of water. eutrophication Physical
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human activities can cause an imbalance in biogeochemical cycling and lead to problems such as cultural eutrophication and fish kills. Eutrophication is a naturally occurring‚ slow‚ and inevitable process. However‚ when it is accelerated by human activity and water pollution called cultural eutrophication‚ it can lead to the premature aging and death of a body of water. Cultural eutrophication occurs when humans speed up the aging process by allowing excessive amounts of nutrients in such forms
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http://www.articlegarden.com/Article/Main-Causes-of-Water-Pollution/54047 Water Pollution. (2010). Water. Retrieved October 3‚ 2010 from United States Environmental Protection Agency. http://www.epa.gov/ebtpages/wastewaterpollution.html What is Eutrophication? (2010). Retrieved October 3‚ 2010 from WiseGeek http://www.wisegeek.com/what-is-eutrophication.htm
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