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Mercury Contamination in SF Bay: Fish & Human Health Impacts, Essays (high school) of Architecture

The historical context of mercury contamination in the san francisco bay, its effects on fish populations and human health, and potential solutions to reduce mercury pollution. The document highlights the negative impacts of mercury on fish behavior, reproduction, and early development, as well as its toxic effects on humans, particularly on the developing brain and nervous system.

Typology: Essays (high school)

2014/2015

Uploaded on 09/18/2015

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Tyler Bruno
Prof. Koehler
Biology 117
23 May 2014
Words:743
Mercury in the Bay
During the mid-1800s, the California gold rush was at its peak. There was a huge
increase in the population in the Bay Area at this time. With this increase, it sparked the demand
for fishas the main source of food. This was detrimental to the fish population. Fishermen took
as many edible sea life as they could. This almost caused multiple types of fish to become
extinct. Now, we are faced with a new issue, mercury contaminated fish. Commercial fishing, a
once prosperous industry may be on the verge of being almost extinct. Not only is there a huge
decrease in the fish population, but there has been evidence that the remaining fish can be
contaminated with mercury. It is important to know what mercury contamination is, how it can
affect people, how it is caused, and how we can reduce it.
Mercury contamination has multiple serious effects. According to waterboards.ca.gov,
“Mercury can impair behavior, reproduction and early development of fish.” With mercury
poisoning, this poses a risk to future generations of fish. Not only does mercury have the ability
to kill the fish, but can cause reproductive mutation which can therefore cause a decreased life
span. This may lead to a significant decrease in fish populations in future generations.
Not only does mercury have a negative effect on fish, but it can also cause health
problems with humans. When a person consumes a fish, it may contain methylmercury, a toxic
compound that forms when mercury binds with organic molecules. According to epa.gov,
“mother's consumption of fish and shellfish that contain methylmercury, can adversely affect a
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Tyler Bruno Prof. Koehler Biology 117 23 May 2014 Words: Mercury in the Bay During the mid-1800s, the California gold rush was at its peak. There was a huge increase in the population in the Bay Area at this time. With this increase, it sparked the demand for fishas the main source of food. This was detrimental to the fish population. Fishermen took as many edible sea life as they could. This almost caused multiple types of fish to become extinct. Now, we are faced with a new issue, mercury contaminated fish. Commercial fishing, a once prosperous industry may be on the verge of being almost extinct. Not only is there a huge decrease in the fish population, but there has been evidence that the remaining fish can be contaminated with mercury. It is important to know what mercury contamination is, how it can affect people, how it is caused, and how we can reduce it. Mercury contamination has multiple serious effects. According to waterboards.ca.gov, “Mercury can impair behavior, reproduction and early development of fish.” With mercury poisoning, this poses a risk to future generations of fish. Not only does mercury have the ability to kill the fish, but can cause reproductive mutation which can therefore cause a decreased life span. This may lead to a significant decrease in fish populations in future generations. Not only does mercury have a negative effect on fish, but it can also cause health problems with humans. When a person consumes a fish, it may contain methylmercury, a toxic compound that forms when mercury binds with organic molecules. According to epa.gov, “mother's consumption of fish and shellfish that contain methylmercury, can adversely affect a

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baby's growing brain and nervous system. Impacts on cognitive thinking, memory, attention, language, and fine motor and visual spatial skills have been seen in children exposed to methylmercury in the womb.” Consuming fish that have mercury, may cause serious defects to fetuses and young children. Toepa.gov also states “Outbreaks of methylmercury poisonings have made it clear that adults, children, and developing fetuses are at risk from ingestion exposure to methylmercury.” It is clear that, too much exposure to mercury can be a serious issue for people of all ages. Now that we know the effects of mercury contamination, we must look at how aquatic life is being contaminated. During the 1800’s, mining was the cause of most of the pollution in the bay. Corporations during the gold rush would mine for gold and other precious metals in the mountains. Miners would blast sediment with water, a process called hydro blasting. Mercury would attach to gold and random sediment during this process. Breaking up the sediment and gold would cause mercury infused sediment to run off into streams and rivers which would then lead into the bay. Unfortunately, mercury pollution is not a thing of the past. Coal, oil, and tar sand refineries in Northern and Central California release mercury pollutants into the air, which then evaporates into rivers, streams, and the bay. Mercury pollution is an issue that effects both humans and wildlife, but this problem can be reduced with several key steps. The residents must help create laws and regulations that will reduce pollutants caused by refineries. According to Baykeeper, there are several regulations that should be enacted. They state, “Require municipal and industrial waste water dischargers to monitor methyl mercury levels in discharges to the bay. Strengthen requirements to protect communities that rely on fish out of the bay as a food source. Require dischargers to undertake and fund efforts to protect our communities from mercury contamination. Improve strategies to

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