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Effects of Water Pollution on Natural Assemblages (Essay Sample)

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i want write report 2500words without referense and graph or timtable ,etc assignment-GSE804.docx GSE804_Unit_Guide_2011_(2).pdf Essay/Report: 2500words Choose an environmental topic from the list below (or suggest a suitable alternative but discuss with the unit convenor before proceeding with it) and write an examination of how the theoretical side of ecology relates to the practice of tackling that problem or issue. Your essay should not exceed 2500 words in length. This will allow you to examine at least one ecological topic in depth. Remember to explicitly link Principles to applications. Also, be sure to set out the problem and your approach in the introduction of your essay. Your essay will be assessed based on your demonstrated understanding of the problem or issue, your ability to logically link principles to applications, your use of available literature, and your written communication skills. Suggested topics: 1- Effects of a particular type of pollution on natural assemblages. 2- Conservation biology, especially with regard to the role of interactions between species. 3- Stock-recruitment relationships and harvesting in fisheries. 4- Introduction of exotic species across natural barriers of oceans and landmasses. 5- Habitat fragmentation and landscape ecology. 6- Ecosystem rehabilitation and reconstruction. 7- Ecological effects of the release of genetically engineered organisms. 8- Biological control of pests. 9- Strategies of biological monitoring. GRADING The general criteria under which you will be assessed throughout the unit are as documented in the table below Developing Functional Proficient Advanced Unable to explain basic terms and concepts Clearly or accurately. Unable to illustrate terms and concepts with specific examples or Conceptual diagrams. Unable to extrapolate concepts to new Situations. Able to explain terms and concepts clearly and accurately; can illustrate terms and concepts with specific examples and Conceptual diagrams. Can apply knowledge to new situations with Some competence. As for Functional level but with greater critical Insight. Includes acknowledgement and/or discussion of limitations or drawbacks Of own knowledge. As for Proficient but with originality in approach And/or interpretation. Correctly applies appropriate terminology relative to each discipline throughout Responses. source..
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Effects of Water Pollution on Natural Assemblages
Abstract
Two thirds of the earth`s surface is covered by water with only a third being taken up by land. The earth`s population, however, has continued to grow rapidly over the past few years and the result of this has been an increasing pressure on the earth`s water resources. The industrial revolution of the nineteenth century led to the creation of many industries. It soon spread to other countries across the globe. Despite the benefits that industrialization brought, it had the negative effect of causing all kinds of pollution including water, air and soil pollution. Pollution has subsequently led to various consequences like global warming. This paper discusses water pollution in particular and the effects it has had on natural assemblages.
Introduction
According to the United Nations, water pollution is defined as the direct or indirect introduction by man of substances or energy into the marine environment including estuaries which results to deleterious effects such as hazards to human health, harm to living resources, hindrance to marine activities such as fishing, reduction of amenities, and the impairment of the water quality (Laws 2000, p. 45). Water pollution can occur in surface water like that in water bodies such as rivers, lakes and oceans. It can also occur on underground water especially when weed killers used in agricultural activities are allowed to drain to the ground (Clark et al 2001, p. 42). Apart from pollution of surface water and underground waters, water pollution can also occur as point-source pollution or as nonpoint-source pollution. Point-source pollution occurs when pollution comes from a single location. For example, when a discharge pipe attached to an industry pours its waste on a water body, this is referred to as point-source pollution as the discharge pipe here is the only location from which pollution occurs. Oil spill from a tanker is also another example of point-source pollution (Best 2005, p. 71). Nonpoint-source pollution on the other hand takes place when water pollution happens from many different sources. For example, an oil spill from a tanker and industrial plants located near a lake can pollute the lake collectively. In point-source water pollution, the place that is most affected is the one located immediately near the source. Usually, the pollution disperses in such a case the further away it gets from the source (Clark et al 2001, p. 47). In nonpoint-source water pollution, however, this is not the case since pollution is happening from many sources. Water pollution can spread to other areas other than near the source and when this happens, this is referred to as trans-boundary pollution (Laws 2000, p. 47).
Causes of water pollution
Water pollution is brought about by various causes. First, it is caused by industrial waste being discharged into water bodies. According to a report by...
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