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Wildlife Defies Chernobyl Radiation

An anonymous reader writes "The BBC reports that wildlife has reappeared in the Chernobyl region even with high levels of radiation. Populations of animals both common and rare have increased substantially and there are tantalizing reports of bear footprints and confirmed reports of large colonies of wild boars and wolves. These animals are radioactive but otherwise healthy. A large number of animals died initially due to problems like destroyed thyroid glands but their offspring seem to be physically healthy. Experiments have shown the DNA strands have undergone considerable mutation but such mutations have not impacted crucial functions like reproduction. It is remarkable that such a phenomenon has occurred contrary to common assumptions about nuclear waste. The article includes some controversial statements recommending disposal of nuclear waste in tropical forests to keep forest land away from greedy developers and farmers"

17 of 612 comments (clear)

  1. But ... by TheRealMindChild · · Score: 5, Insightful

    They have only whitnessed this over how many generations? I would imagine with every offspring, you have a handful more mutations. After a while, you have oatmeal.

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    1. Re:But ... by NitsujTPU · · Score: 4, Insightful

      pssst. You're usually supposed to provide a counter-example. Otherwise, it becomes two non-experts slapping each other's wrists.

    2. Re:But ... by Vreejack · · Score: 5, Insightful

      No. Every generation tends to get rid of bad mutations. It's called natural selection. While a few alarming but non-fatal mutations will occasionally be expressed, most mutations will simply result in reduced fertility due to terminated abnormal pregnancy. But wild animals are generally fecund enough to make up for the losses.

      Consider that the average human conception has about three dangerous mutations even without Chernobyl. Why aren't we oatmeal? Because a goodly percentage of conceptions never make it past the blastocyst stage due to excessive nasty chromosomal damage, while we lucky survivors had fewer.

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    3. Re:But ... by wheany · · Score: 4, Insightful

      Chernobyl happened 20 years ago. Some species, like mice, have probably had several dozen, if not hundreds of generations. Even dogs rarely live 20 years, and I'd imagine wolves to be the same. If that's true, assuming that a wolf first reproduces on average at the age of 2, there have been 10 generations of wolves after the Chernobyl accident. In any case, there has been time for several generations to be born.

  2. Is there a name for this? by wombatmobile · · Score: 5, Insightful

    He has found ample evidence of DNA mutations, but nothing that affected the animals' physiology or reproductive ability. "Nothing with two heads," he says.

    It's as if the positive changes are being selected in favor of the negative changes.

  3. It's like that at the Hanford Reservation by Beryllium+Sphere(tm) · · Score: 3, Insightful

    Leaking tanks of high-level bombmaking waste have made a huge area undevelopable. The animals are pleased as punch with this state of affairs.

  4. That doesn't sound so good by sl4shd0rk · · Score: 5, Insightful

    It's not hard to imagine many of the conceptions about radiation exposure may have been a bit over estimated, simply because nobody has really been willing to undergo an experiment of that caliber. I would not believe the animals are enjoying their radiation poisoning however until I was able to ask them.

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  5. long-term effect by lawpoop · · Score: 4, Insightful

    Well, a lot of animals have life cycles under a year. Even bears don't often live past 20, right? And they become sexually mature and reproduce within a few years. The radiation wouldn't interrupt the life of short-lived animals.

    So, not everyone living in an irradiated area will have their flesh falling off, but for us long-lifed humans, the life would be filled with more misery and an early ending. Maybe cancer at 20. And for normal human socities, "old farts" (those over 30) are really what drive the society.

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  6. Re:Contrary to Common Assumptions? by Planesdragon · · Score: 3, Insightful

    Sure they can reproduce but I wouldn't exactly be jumping with glee over this "recovery". The damage merely has yet to express itself.

    So what you're saying is, regardless of the lack of evidence for harmful mutation that should be evident, there MUST be harm becase you KNOW that radiation causes it?

    Way to be scientific about this.

  7. A bunch of thoughts by subreality · · Score: 5, Insightful
    • Sure enough, life adapts when it has to.
    • The current radiation levels are probably a lot lower than the levels when the area was freshly sprayed with molten core and irradiated particles.
    • The radiation isn't *that* bad. We'd consider it wildly unacceptable if 1 in 10,000 people died over the course of 5 years. Animals won't notice.
    • Getting rid of humans is *great* for wildlife.

    So why are we surprised that any of this is happening?
  8. Re:Contrary to Common Assumptions? by JanneM · · Score: 4, Insightful

    in fact, the offspring are pretty much normal.

    The offspring you find in the wild is pretty normal. Of course, just about all offspring that does exhibit deleterious phenotypic expression die very quickly, and is in most cases spontaneously aborted long before birth. Most species can produce a lot more offspring than actually survive to adulthood (and most species do usually produce slightly more, as a hedge), so dramatically higher infant mortality or aborted pregnancies would just be compensated for by having more pregnancies and larger klutches in the first place. Of course, to some extent the mortality is lowered by the lack of human activities. You could hypothesize a donut-shaped overall mortality graph with the senter around the reactor and the outer edge at the edge of normal human habitation. Near the center you'd have high mortality from the radiation effects, and high mortality in human-habitated areas, but in between there'd be a sweet spot, with just a small increase in radiation mortality completely swamped by the lack of humans.

    In fact, it would be really interesting to see a study of klutch size among birds nesting at the plant compared to the same species at various distances away from the area.

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  9. Re:No suprise by Kadin2048 · · Score: 4, Insightful

    That's good to know, but regardless of whether she's 26 or 30, or whether she rode a motorbike or a Jeep, the real question is whether or not the photos in the photo-essay are authentic. I've been reading through it and by and large I think the text is far less interesting and compelling than the photos.

    Anybody have any clue as to the authenticity of the photos?

    (Particularly, since we're talking about the wildlife in this thread, the ones of the mutant animals? Which she admits are not hers.)

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  10. Re:Disposal of nuclear waste could be trivial by Kadin2048 · · Score: 5, Insightful

    But, in any case, dumping all our radioactive waste in the sun would be a horribly short sighted squandering of a potentially precious resource for the future. Heavy metals don't exactly grow on trees you know.

    An excellent point, one that I think can't be said enough. While we're burying all this nuclear waste, or tossing it down into the Marianas Trench, or whatever, I think it's important to consider that while the storage method should be able to last as long as the longest-lived dangerous isotopes in the waste (in case we just want to leave it there) it should also have as a design criteria the ability for us to recover it.

    I could easily envision a time in the future, a lot sooner than 10,000 years or even a few hundred, when we might want to get at some of that "waste" in order to reprocess it in ways that are not economically viable, or perhaps technologically feasible, right now.

    This is hugely the case with the type of nuclear energy we use in the United States, where the majority of the fuel rods are comprised of U-238 and only a small percentage of it is U-235, the latter is the fissionable fuel, the former isn't (although it can be bred into Plutonium) and currently we really just use it as a sort of contaminant in order to make weaponization of the fuel difficult. A change in attitudes regarding breeder reactors would instantly make U-238, particularly the stuff that comes out of reactors (which has greater-than-trace amounts of plutonium in it already) a hot commodity. (No pun intended.)

    Frankly given our energy requirements, I think the need to reprocess nuclear fuel waste may occur sooner rather than later, perhaps within a few centuries or even decades, depending on technological developments of other energy sources and the geopolitics of Uranium mining, and thus the solutions for waste storage that are recoverable while also being secure are the best ones.

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  11. Re:Disposal of nuclear waste could be trivial by roseblood · · Score: 3, Insightful
    quote:
    You're calling building a space elevator trivial? Damn, what do you consider hard?

    /quote

    reply:

    FTL travel.
    Time travel.
    Raising of the dead.
    Understanding women.

    --
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  12. Re:But currently the radiation level is small by Anonymous Coward · · Score: 4, Insightful

    I think your argument would be better if you could cite some of your sources (the parent post had couple of links to support his/her point). I guess I could just google it but how do I know I'm looking at the same sources that you used to make your argument?

    Also, pictures of deformed babies don't really support your argument either way except to include emotional aspect to this argument. Deformed babies are born everyday. What I think would be important is the number of deformed babies and type of deformalities compared to "normal" population.

  13. Some will always survive a nuke by Opportunist · · Score: 3, Insightful

    To give a reliable overview, you'd have to track ALL the animals there and observe the population. Here is what you would find:

    Some die instantly at the blast.
    Some die within the next hours.
    Some die within the next days/weeks/months.
    Fertility goes DOWN, but those THAT have offspring will have a higher chance to raise them to maturity (less competition).
    Again, of those some will die due to mutation.
    Some will have a shorter life expectance. As long as they mature and can raise at least one generation of offspring, it's not so important.
    Also keep in mind that quite a few animals CAN only raise one generation of offspring, they die after giving birth/laying eggs.

    Bottom line, of course animals will survive, as a group. Humans would too, the body count would be incredibly high and the chance that YOU, as an individual, survive, is incredibly small. But as a species, you can fairly reliably survive a nuking.

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  14. Re:While we're doing movie quotes by david.given · · Score: 4, Insightful
    (Can anyone guess the Movie or Book title?)

    Uninformed and Inaccurate Alarmism, by Michael Crichton?