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Fish Contamination in the Great Lakes

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Introduction

Matt Stanelle Hour 3 11/19/01 Fish Contamination in the Great Lakes Defining Problem / Research Question There are many chemicals in the water but only at a very low concentration. Some of these chemicals can bioaccumulate in aquatic organisms and can become very concentrated with chemicals such as: toxaphene and PCBs. Small fish and zooplankton eat large quantities of phytoplankton. Any of the chemicals accumulated in the phytoplankton become even more concentrated in that animals that eat them. This is the same for every step in the food chain. Fish like lake trout and lake salmon can have contamination levels millions of times higher than that of the water they live in. In fact, all foods, including fish, contain environmental contaminants. State and provincial governments provide information to consumers regarding consumption of sport-caught fish. This involves interpretation of studies of health effects from exposure to contaminants. Some effects may include numbness of fingertips, dizziness, and the sensory loss that might occur from toxic exposure to methyl mercury. ...read more.

Middle

And those who eat fish regularly in either of these conditions may be affected by becoming sick with symptoms listed above. Each lake will vary in quality, but the amount of contaminants consumed and with the other variables added in, depending on the person, will produce similar results. Selection of Variables * Overall Water Quality * Pollution regularly going into the water * Steps taken to prevent pollution * What Aquatic Organisms that are supported by the surrounding waters * Overall health of Aquatic Organisms * Levels of Various Chemicals in the Water * The amount of fish consumed and over what period of time Designing a method with Appropriate Apparatus / Materials 1. Gain access to materials to test water quality 2. Go online or use another resource for determining water pollution 3. Go online or use another resource for determining pollution prevention 4. Gain access to a chart of Aquatic Life in the waters 5. ...read more.

Conclusion

Record any physical affects primarily from the contamination 3. If the water quality is good and people eat less than the acceptable level of fish, record any physical affects primarily from the consumption of the contamination 4. If the water quality is poor, set a level of acceptable consumption and then pay close attention to those people whom consumer more than that limit. Record any physical affects primarily from the contamination 5. If the water quality is poor and people eat less than the acceptable level of fish, record any physical affects primarily from the consumption of the contamination 6. Create a chart displaying data thus showing affects from contaminates in fish. Side Affect from Contaminates in Poor Water Quality Conditions THOSE WHO EAT LESS THAN THE ACCEPTABLE LEVEL OF CONTAMINATED FISH THOSE WHO EAT MORE THAN THE ACCEPTABLE LEVEL OF CONTAMINATED FISH Side Affect from Contaminates in Good Water Quality Conditions THOSE WHO EAT LESS THAN THE ACCEPTABLE LEVEL OF CONTAMINATED FISH THOSE WHO EAT MORE THAN THE ACCEPTABLE LEVEL OF CONTAMINATED FISH ?? ?? ?? ?? 1 ...read more.

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