Tuesday, November 25, 2014

Politics and Mercury (b5)





Peru is one of the world’s largest exporters of gold, exporting an estimated 150 tons of gold in 2013. In the past ten years Peru’s poverty has dropped from 54% to close to 34%. Those are some pretty impressive numbers and both economic wealth and low unemployment are high on the priority list of a stable government. In addition to gold, Peru is also a major exporter of oil, copper, tin, zinc, and silver. Many of these resources are found within Peru’s Amazon Rainforest.

Environmentalists, concerned about pollution and deforestation caused largely by mining, placed pressure on the Peruvian government leading to the appointment of a new office in the government. Antonio Brack Egg was appointed the first Minister of the Environment of Peru in May of 2008. Egg was passionate about cleaning up Peru’s environment and cracking down on illegal mining but was faced with much opposition from those profiting from the mining.

Egg supported the International Mercury Treaty, saying that the gold industry should have similar standards as the International Diamond Certifications, which were put into place to reduce human rights violations. Most people know what blood diamonds are and are pretty savvy about where they purchase gems but few people take note of where their gold comes from. Peru signed the International Minamata Convention on Mercury in October of 2013, just 10 months after it’s creation.

The Mimamata Convention on Mercury states that “mercury is a chemical of global concern owing to its long-range atmospheric transport, its persistence in the environment once anthropogenically introduced, its ability to bioaccumulate in ecosystems and its significant negative effects on human health and the environment.” The 62 page document talks in great detail about the adverse affects of mercury as well as the measures countries should take to limit mercury use.

In the past year Peru’s government has attempted to take a stand against illegal gold mining operations. Government officials have been monitoring gold traffic while police and armed forces have raided mining camps and destroyed mining equipment. ““It’s like a liberated zone. The state’s presence there is ephemeral. The operations all follow the same pattern: The interdiction lasts a day, but the next day, the miners are already replacing the destroyed equipment, and within three days, they’re back at work,” Puerto Maldonado resident  Victor Zambrano says.


There are many issues that stand in the way of fight against the illegal or artisanal gold mining. One problem is that there is no incentive for the illegal gold miners to apply for licenses. “Walther Arratia, director of the Madre de Dios Regional Government Office of Energy, Mines and Hydrocarbons, says that 3,770 miners registered with his office in 2012 to begin the process of formalizing their concessions, but no applications have been approved to date because of unresolved questions about the application of the new law. The office’s environmental expert says that once those questions are resolved, he will need to evaluate thousands of environmental impact studies, which could take years.”

In the meantime, there are no attractive alternatives for the miners to earn a living and provide for their families. Government interference is minimal at best so most choose to continue to take the risk and mine illegally. 

In order to effect change, people first need to be made aware of the problem. The miners who choose not to formalize their concessions need to be provided with a realistic alternative to provide for their families. The government must be willing to put into place policies that are reasonable to enforce and a process of formalization must be established that can be completed in a timely manner. 


Sunday, November 23, 2014

Summary of a Study: Mercury Levels in Humans of the Madre de Dios Region (b4)




A study conducted by Katy Ashe was done in 2012 to show the threat that mercury contamination poses to the human population in the Madre de Dios region of Peru. The Madre de Dios region is responsible for approximately 70% of Peru’s illegal gold production. The study estimated that there could potentially be up to 30,000 illegal gold miners operating in the Madre de Dios region. This is partially because permits are difficult to obtain and are not often enforced. Many miners choose to avoid the hassle and mine off the books. These unregulated miners have a poor understanding of proper mercury handling techniques and are responsible for elevated mercury levels in the region.

Hair samples were collected from men and women in mining zones as well as in the capitol city of Puerto Maldonado. In addition to the hair samples, each participant was also asked to complete a brief survey that included their sex, age, gender, location, length of time at that location, and information on their fish consumption.

The results of the study showed that location, gender, and fish consumption were all significant factors of mercury levels while age and the length of time at the location were not significant indicators of abnormal mercury levels.

As expected, the samples taken from the mining zones were significantly higher than those of Puerto Maldonado. Men had the highest levels of mercury in both demographics. This is probably due to the fact that the men are more likely to have had direct contact with mercury. When factoring in location, the study showed that 11% of those surveyed in the mining camps had unhealthy levels of mercury as opposed to 6% of those living in the city.




Figure 1. Mercury levels in hair samples by location of residence and gender. Red line indicates the level of mercury in human hair considered to start unhealthy symptoms by WHO (6 mg Hg/grams of dry hair) [13]. doi:10.1371/journal.pone.0033305.g001



Considering the amount of fish that the people participating in the survey consumed on a regular basis the study concluded that the rates of unhealthy mercury levels were 6% and 7% for the lower levels of fish intake (fewer than 12 fish per month) and 11% for those who ate more than 12 fish per month.



Figure 2. Total mercury levels in hair samples by fish consumption levels. Red line indicates the level of mercury considered unhealthy by WHO [13].



This study supports that there are high levels of mercury contamination in areas prevalent to mining. Another step would be to assess possible symptoms in those surveyed. This is difficult to do since people can be wary of providing information on themselves beyond just a general survey. More studies like this one are necessary in order to draw public attention to the issue of mercury contamination and the dangers that mercury presents not only for the environment but to humankind as well. 


Citation: Ashe K (2012) Elevated Mercury Concentrations in Humans of Madre de Dios, Peru. PLoS ONE 7(3): e33305. doi:10.1371/journal.pone.0033305

Friday, November 21, 2014

Knowledge Drives Change (b2)



When people talk about saving the Amazon Rainforest the first thing that comes to most minds involves large-scale logging. Most do not consider the threat of pollution in such a vast, and seemingly untouched expanse of land. Mercury is only one of the many pollutants that are damaging our tropical rainforests. The majority of tropical rainforests contain large oil reserves. Due to increasing oil demands from around the world these reserves are being exploited. Oil companies currently lease approximately 70% of the Peruvian Amazon.

In an article on Science Daily the European Association of Geochemistry highlighted a new study that reveals some disturbing data on pollution in the Amazon Rainforest. Records show that over a span of 30 years the western Amazon has suffered widespread oil pollution from spills, improper drilling, and poor extraction methods.



Researcher Raúl Yusta Garcia described the findings:

"We looked at measurement in 18 wastewater dumping sites from 10 different Amazon tributaries. We were able to pull together records over a 30 year period, from 1983 to 2013, allowing us to measure variations in 9 different pollutants, such a lead, mercury and cadmium. We found that 68% of the samples were above the current permitted Peruvian limits for lead concentrations, and 20% of the samples above permitted cadmium levels.

We were also able to compare pollution upstream and downstream of some of the dumping sites. With some samples, we found chlorine levels averaged 11 times higher downstream of the wastewater dumping site than it had been upstream. Pollution from oil extraction declined from around 2008, but the danger is that increased demand causes increased pollution."

In addition to pollution the Amazon is suffering from deforestation from both large and small-scale logging and farming. The farming of palm oil, which is found in many processed foods, is a large source of deforestation.

Gathering this knowledge is crucial in identifying areas of concern but that only part of the battle to conserve our rainforests. It is our responsibility to take that knowledge and act in order to make our world a better place for future generations.



The Amazon Rainforest is probably a long way away from where you live. Aside from donating to the conservation efforts you may wonder what can you possibly do to help.

1. Reduce your consumption of fossil fuels.
            Take the bus, ride your bike, or walk to work whenever possible. Start incorporating clean
            energy into your home and life.

2. Avoid buying products made of Amazonian wood such as Mahogany.
            Instead, select woods that are more easily regrown like bamboo.

3. Avoid purchasing foods containing palm oil.
This is a tough one since it is in so much of what we eat but being aware of what is in your food can lead to a reduction of the amount of palm oil you consume.

4. Be a voice of the rainforest.
Education drives change. Inform and challenge your neighbors, friends, and family to make eco-friendly choices and help save the rainforests!








Wednesday, November 19, 2014

Spotlight on Luis E. Fernandez (b3)

Luis E. Fernandez


Luis E. Fernandez is a tropical ecologist and public speaker. In addition to his many publications, his work has been featured on television broadcasts, blogs, and several news and magazine outlets such as Smithsonian Magazine, National Geographic, The Washington Post, and Scientific American. He has been recognized many times over for his work on mercury dynamics in the Amazon River Basin and serves on the advisory boards of the Amazon Aid Foundation, the Environmental Health Council, and OROECO. Fernandez is also a Research Associate at the Carnegie Institution's Department of Global Ecology, a Senior Research Associate at Stanford University's Department of Anthropology, and a Research Assistant Professor at Wake Forest University.

His work as the Director of the Carnegie Amazon Mercury Ecosystem Project (CAMEP), examining the effects that gold mining and mercury contamination has on the environment, and the deforestation of natural and human ecosystems in Southeastern Peru has provided valuable data and insight into the devastation and long-lasting effects of artisanal gold mining. In an article with Lacey Avery from Mongabay.com, Fernandez makes the following statement about the dangers of mercury poisoning:

"Mercury in all forms is a potent neurotoxin affecting the brain, central nervous system and major organs, at extremely high exposure levels, mercury has been documented to cause paralysis, insanity, coma and death. However, mercury does not typically trigger dramatic immediate health effects, Fernandez continued. Instead it causes slow, insidious damage eventually resulting in reduction of life span and decreased quality of life. Because of the slow nature of the damage done by mercury, combined with the vague symptoms of early exposure, it is common that mercury contamination is overlooked, or, in many cases, actively denied as a real health threat." 
-Luis E. Fernandez

CAMEP is comprised of eight universities and non-governmental organizations. The group has conducted several studies measuring mercury levels in Puerto Maldonado, the capital of the Madre De Dios region of Peru. These studies indicated that mercury levels in fish found in the markets of Puerto Maldonado increased from 2009 to 2013. In addition, human hair tests revealed average levels of mercury that were almost three times higher than the reference value. The work that Fernandez and his group conducts not only gathers valuable data on the destruction and harmful impacts of mercury contamination in the Amazon but it sheds light on a topic that is seldom thought of. The effort made by Fernandez and CAMEP to reach out to the communities affected by mercury poisoning and to the help make the world aware of the dangers of mercury contamination is commendable. There is an old saying, “With knowledge comes responsibility.” The more we are able to find out about the negative impacts of introducing large quantities of mercury into our environment the more important it becomes to work together to find a solution to stop it.


A photograph I took of the town square in Puerto Maldonado. (c) Krista Lee