The Effects of Harmful Algal Blooms and Eutrophication Introduction Eutrophication‚ by definition‚ is a process where bodies of water receive excess nutrients that stimulate excessive plant growth. Eutrophication results from continuous pollution in the form of agricultural run-offs or sewage outflows. Fertilizers and sewage are both rich in nitrogen and phosphorus‚ which are both nutrients essential for plant growth. However‚ these nutrients are typically low in content in aquatic environments
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to toxins. First‚ there is a lot of bacteria entering Lake Erie. A few years ago much of Lake Erie was very contaminated with dangerous toxins from algae: “In 2011‚ bright green slime spread across one-third of Lake Erie. The slime was a harmful algal bloom‚ caused by cyanobacteria” (Kowalski 34). As a result of Lake Erie being polluted people must find the issue and resolve it. One theory of the pollution in Lake Erie is that the species are not being managed well enough. Lake Erie must be conserved
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Eutrophication 2-1 2. EUTROPHICATION This chapter should be read by anyone wanting a brief summary of the causes‚ the impacts and the management of eutrophication. CHAPTER CONTENTS 2.1 2.2 2.3 2.4 INTRODUCTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-3 CAUSES . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-4 2.2.1 Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . .
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the coasts. Run-off comes in the from fertilizers and pesticides from agriculture that often collect in rivers that most of the time flows right into the Gulf. 5. Explain how a Harmful Algal Bloom can impact an ecosystem. Many of the harmful algal blooms release toxins as they grow larger. Algae blooms grow quickly. As they grow they starve the air of oxygen and block sunlight which many aquatic plants and animals need to survive.
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water World Health Organization Regional Office for Europe EUROPEAN COMMISSION Eutrophication and health 40 preface Eutrophication and health Algal blooms‚ “red tides”‚ “green tides”‚ fish kills‚ inedible shellfish‚ blue algae and public health threats. What is the common link ? The answer is‚ EUTROPHICATION: a complex process which occurs both in fresh and marine waters‚ where excessive development of certain types of algae disturbs the aquatic ecosystems and becomes a threat
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The Gulf of Mexico Dead Zone The gulf of Mexico’s dead zone is only getting worse doing a great deal of damage to the U.S. economy. The issue in the Gulf of Mexico is the dead zone that has started occurring since 1972 and is only increasing in size. The Gulf of Mexico supplies the U.S. with 72% of their income shrimp 66% of oysters and 16% of fish (Philpott‚ 2013). If the dead zone does not decrease in size fisherman and costal workers will be largely impacted
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destroying some of the algae population within days or weeks. Conditions that are high in nutrients and allow the blooms to thrive can result in the blooms surviving for months. An abundance of Blue Green algae is of serious concern to our environment causing toxic and sometimes fatal consequences especially to live stock that drink from the water ways. Toxins produced by the blooms also have an impact on humans who drink the infected waters‚ causing many health problems and can increase the chance
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Approach | Writing Assignment 2 | 3/25/2012 | Scientific Method and the Problem-Solving Approach My hypothesis for the small amount of information would be the reason for the fewer fish and higher amount of algae may be due to algae blooms. Algae blooms are due to a rapid increase of algae and too much nitrogen in the water. From this information‚ I can deduce that there is a runoff problem from one or more of the farms where fertilizer is being spread and is entering into the lake. This in
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Unit 3. Assignment 1: Bacterial Growth Rates 1. Mediums that could be used to determine shigellosis include Btilliant Green Agar‚ and Triple Sugar-Iron Agar. Expected results in a confirmed case of shigellosis are as follows: Brilliant Green Agar – Isolated Shigella colonies which do not ferment lactose or sucrose and appear red or white in color with no growth to trace growth on the Agar plate will be present. Triple Sugar-Iron Agar – Presence of Shigella will manifest as a red slant with
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Chesapeake bay is having problems with recent algal blooms. This paper will discuss the roles of the organisms in the partial chesapeake bay food chain‚ The possible effects of a decrease in the algae population on the plant and animal populations‚ What the causes of this problem is‚ what is being done to fix it‚ and what else could be done. Algae is a floating plant on top of the water; that is at the bottom of the food chain. This plant has no roots‚ and floats freely about the water. According
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