Sunday, March 18, 2018
Effects of Chernobyl: 30 Years Later
The Chernobyl nuclear meltdown happened on April 26th, 1986, when Ukraine was still a part of the USSR. The disaster occured during a systems test at Reactor Number 4, when there was a huge surge of power output. It led for a reactor to rupture, causing explosions and a cloud of toxic radioactive mass to fly out. Not only did the radioactive waste cover Ukraine, but drifted over Western Europe, with 60% of the fallout landing in Belarus. As a result, from 1986 to 2000, around 350,000 people were taken out of their homes and resettled into less contaminated areas. Although there were only 31 deaths that happened because of the accidents, there have been as many as 68 from the radiation. While a 2006 report suggested that 30,000-60,000 cancer deaths have been related to Chernobyl, others have estimated around 200,000 deaths. However, nearly 400 million people were exposed to the contamination with radioactivity levels greater than 4kBq/m2, and as of 2009, when the quote was given, "nearly 5 million people still live with dangerous levels of radioactive contamination in Belarus, Ukraine, and European Russia".
To cover the Unit 4 reactor, a concrete and metal structure was built to stop the radioactivity from leaving into the atmosphere. Not soon after the explosion, a 30 kilometer exclusion zone was created so people do not go into the most hazardous of areas. It is the most radioactively contaminated region in the entire world. However, contrary to popular belief, a lot of wildlife is actually thriving in the Exclusion Zone. Although there has been widespread publication of mutations, the some animal species as a whole have adapted to the radioactivity. After the initial explosion at reactor 4, many of the animals died out in the first 6 months. But as time went on, their populations began to recover.
1) The Red Forest:
The Red Forest refers to a patch of forest which took much of the brunt of the radioactive fallout. As a result, some trees actually took on a crimson shade from the toxic elements. I watched a documentary on Animal Planet a year or so ago, and it mentioned that the Red Forest was hit with so much radioactivity, that the leaves that fell on the ground in April 1986, have yet to be decomposed. Trees grow at a much slower rate, and there are very few natural decomposers like spiders and insects. With over 30 years of leaf litter and other non-decomposable material, the Red Forest and other forested regions in the Exclusion Zone are a huge fire risk to the region. A burning nuclear fallout zone is a severe threat to the air quality of much of Europe.
2) Bird Species:
The bird species in Chernobyl have been found to adapt to the ionizing radiation, meaning, they were able to continue reproducing after the original explosion. However, the exposure to radiation caused genetic damage in species, and increased the mutation rates. They have been found with cataracts in their eyes and smaller brains. With radiation in the air, water and food, many birds have mutatedsperm, and in some areas male bird populations are 40% sterile.
3) Catfish Species; River Monsters:
A couple of years ago, Animal Planet ran an episode of River Monsters where they traveled to Chernobyl to try to catch a catfish living in the cooling ponds of the nuclear reactors, specifically Reactor 4. The coolings ponds of the reactor have allowed for Wells catfish populations to live in isolation, without predators and more than enough prey. They are able to feed on decomposing material and small plant and animal life. Catfish caught were found to have 16x more radiation than normal, and can grow up to alarming sizes.
4) Wolves: the Apex Predator
The Chernobyl zone has up to 400 wolves, with the region having the highest density of wolves on the entire planet Earth. They have taken over the abandoned factories and buildings in Chernobyl and other areas of Pripyat, and even their carcasses can be deadly if touched by a human. The wolves eat prey that have radiation levels 50x the normal amount; and it has been noted that their behavior is much more wild than normal North American wolves. For wolves to travel out of the Pripyat area is a severe threat, because they would come with radiation. However, although these wolves are concentrated with radioactive materials, scientists have found them to be in good shape. They can hunt during both day and night, as there are no humans or other predators to get in their way. The wolf population grows rapidly, and is 7x more concentrated here than anywhere else.
Ultimately, Chernobyl remains a sad reminder that humans have the potential to destroy an entire ecosystem. It also showed Gorbachev that the Soviet Union was severely lacking resources in their non-military sectors, and that changes had to be made to make its economy stronger. Continuing the Cold War was no excuse to continue manufacturing dilapidated and ill-maintained technologies like the Chernobyl Nuclear Power plant. Today, Chernobyl continues to draw ecologists and scientists alike from all over the world to better understand the effects of radiation and make sure something like this never happens again.
Photos:
1) Behavioral changes in Chernobyl's growing wolf population has been observed
2) Mutated pine trees grow in the Red Forest
3) Mutated Bird Species
4) Highly radioactive Wells catfish caught in Chernobyl
5) Reactor Unit 4 explosion
6) Chernobyl Exclusion Zones
Sources:
http://chernobylgallery.com/chernobyl-disaster/what-is-chernobyl/
https://www.earthtouchnews.com/wtf/wtf/yes-there-are-giant-catfish-in-chernobyls-cooling-pond-but-theyre-not-radiation-mutants/
http://theconversation.com/at-chernobyl-and-fukushima-radioactivity-has-seriously-harmed-wildlife-57030
https://www.ranker.com/list/strange-chernobyl-radioactive-animals/cynthia-griffith
https://chernobylguide.com/chernobyl_wolves/
https://www.smithsonianmag.com/science-nature/forests-around-chernobyl-arent-decaying-properly-180950075/
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Anya Gupta
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Anya, this was a very interesting post. I was especially surprised by the biological resilience demonstrated by the wildlife in the area, prior to this I thought that the only wildlife left in an area (if any) would be very minimal and have severe challenges when it comes to reproduction. I was researching this topic further and found an article that said that as the radiation levels are decreasing it is becoming easier for populations to survive there, this is also because there is not human impact in this area. Do you think that Chernobyl will ever return to its pre-meltdown state and do you think that it is likely that these mutated species could damage other ecosystems around it if they were to ever venture out of the immediate area?
ReplyDeletehttps://www.greenfacts.org/en/chernobyl/l-3/3-chernobyl-environment.htm#5p0
Hi! Thanks for your comment. I do not think that Chernobyl will ever return to its previous state before the meltdown. What came out of the reactor was iodine 131, cesium 134, and cesium 137. Iodine only has a half life of 8 days, but can quickly become concentrated in the thyroid glands. However, the half life of cesium 137 is actually around 30 years, so it takes that much time for the radioactivity of that isotope to decrease by 1/2. if you think about the sheer amount of waste that came out- that continues to biomagnify and bioaccumulate in species- that is a severe threat that will never go away. Not to mention that the reactor used uranium 235 as well, which has a half life of 700 million years. I think the mutated species could just pass on mutations through their genes, which would affect surrounding areas. They have such high level of radiation in them, that even the carcass of an animal is toxic to the human touch. Some scientists predict that people can go back in 20,000 years though...
Deletehttps://www.livescience.com/39961-chernobyl.html
Anya, I really liked your post because it was very detailed and I liked the pictures. Before reading your article I thought of Chernobyl as an environmental disaster. I was very interested how you mentioned that some species are actually thriving because humans are not present. I found a video "https://www.youtube.com/watch?v=TG-nwQBBfmc" and the biologist described Chernobyl as a "restored Eden brimming with wildlife." Some more interesting natural phenomenons that I learned about in the video were that the outer rings of some trees are a distinct different color. The red rings count back until the white rings begin in 1986. The spider webs are also very disorganized and different. The biologist seeks to learn more about radiation's effect on the environment by comparing his data with data found in fukushima where there was another nuclear accident. Using the source https://www.greenpeace.org/archive-international/en/press/releases/2016/Fukushima-nuclear-disaster-will-impact-forests-rivers-and-estuaries-for-hundreds-of-years-warns-Greenpeace-report-/ I found that unlike with Chernobyl, it is harder for them to quarantine Fukushima so the radiation in the environment is being passed to humans.
ReplyDeleteIt is incredibly interesting to see the effects of the Chernobyl disaster decades later. I decided to research and compare an accident that's a little more close to home. The Three Mile Island incident in Pennsylvania was no where as catastrophic as the Chernobyl disaster. This would be due, according to the articles I read, to the Three Mile Island incident only releasing a small amount of radiation, the situation being effectively contained, and no deaths occurred as a result. This is compared to the Chernobyl disaster which actually exploded and resulted in approximately 4,000 deaths in the region. This article/podcast also digs into the Fukushima incident. Check it out!
ReplyDeletehttps://skeptoid.com/episodes/4397
Anya, great post on the effects of the Chernobyl Disaster on the wildlife of the area. I found it rather remarkable that plants and animals were able to survive even after being exposed to such high levels of radiation for such a long time. According to WHO, the World Health Organization, up to 4000 people are expected to die from the Chernobyl disaster, from both direct radiation poisoning and resulting cancer. The WHO states that the area will be uninhabitable for many years, as the half life of plutonium and americium 241 is within the time period of thousands of years. It is amazing that humans would risk such a huge impact to the world just for the chance to generate energy. Do you think the production of nuclear power is still worth it, despite the possibility of a major disaster?
ReplyDeletehttp://www.who.int/mediacentre/news/releases/2005/pr38/en/index1.html
https://www.theguardian.com/news/datablog/2011/mar/14/nuclear-power-plant-accidents-list-rank
http://www.world-nuclear.org/information-library/current-and-future-generation/nuclear-power-in-the-world-today.aspx
http://www.who.int/ionizing_radiation/chernobyl/backgrounder/en/
I like the way that you start your post by explaining the nuclear reactor, the way it was built and what initially led to the nuclear waste affecting the areas around it. After the introduction the way that you organized your paragraphs and pictures helped me get a better understanding to your overall message, with paragraphs showing each affect that the nuclear reactor had on different species around it. This really opened my mind to the effects nuclear waste and reactors can have on the life around it.
ReplyDeleteWow! This article gave us a insight on how the mess that was the cold war not only hurt human politics but also the innocent wildlife. This article also showed us what an influence it had on Gorbachev which was part of the change in Russia. Another crazy fact about chernobyl is its elephants foot. The elephants foot is a mass of radioactive waste that lies in the basement of reactor 4. It is manly composed of corium and is super deadly to humans. 30 seconds around it will cause dizziness and fatigue. over 2 minutes will cause your cells to hemorrhage and around 5 minutes will surely spell your end.The radioactive mass is still eating away at the floor and spewing radioactive danger.
ReplyDeletehttps://www.ripleys.com/weird-news/elephants-foot/