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One of the World's Largest Organisms is Shrinking (sciencemag.org)

An anonymous reader shares a report: The Pando aspen grove, located in central Utah, is the largest organism on the planet by weight. From the surface, it may look like a forest that spans more than 100 U.S. football fields, but each tree shares the exact same DNA and is connected to its clonal brethren through an elaborate underground root system. Although not quite as large in terms of area as the massive Armillaria gallica fungus in Michigan, Pando is much heavier, weighing in at more than 6 million kilograms. Now, researchers say, the grove is in danger, being slowly eaten away by mule deer and other herbivores -- and putting the fate of its ecosystem in jeopardy. "This is a really unusual habitat type," says Luke Painter, an ecologist at Oregon State University in Corvallis who was not involved with the research. "A lot of animals depend on it."

[...] Scientists first noticed the Pando shrinking in the late '90s. They suspected elk, cattle, and most prominently deer were eating the new shoots, so in the new study Rogers and colleagues divided the forest into three experimental groups. One section was completely unfenced, allowing animals to forage freely on the baby aspen. A second section was fenced and left alone. And a third section was fenced and then treated in some places with strategies to spur aspen growth, such as shrub removal and controlled burning; in other places it was left untreated. The results were surprising: Simply keeping the deer out was enough to allow the grove to successfully recover, the team reports today in PLOS ONE. Even in the fenced-off plots where there was no burning or shrub removal, young trees were thriving.

15 of 108 comments (clear)

  1. Let's be fair about this, people by Applehu+Akbar · · Score: 3, Funny

    Michael Moore is losing pounds because he hasn't had a hit movie in a while, that's all. This has no connection with global wa--

    Oh, wait!

  2. Re:Open Season by infolation · · Score: 2

    We'd have a lot more biodiversity if it wasn't for these pesky animals.

  3. Poor Bambi is eating Ferngully by Amigori · · Score: 3, Interesting

    On my last visit to family in Michigan, deer were everywhere. And they are being pests. I say: larger quotas for hunting season. Same for this area. Venison jerky is very tasty. What say you Eco folks? Save the trees, or save the deer?

    --
    "The quality of life is determined by its activites."--Aristotle
  4. Time for wolves by Strider- · · Score: 4, Interesting

    Time to reintroduce some wolves to the area. They were having similar issues in Yellowstone National Park. Once wolves were brought back into the park, the deer stopped browsing on the trees, causing the forests to regrow, bringing back bird habitat and so forth.

    --
    ...si hoc legere nimium eruditionis habes...
  5. Re:Open Season by ShanghaiBill · · Score: 5, Interesting

    The problem is a lack of apex predators. The deer population has expanded past a sustainable level.

    In the past decade, biologists have recorded strong rebounds in the population of trout in Wyoming rivers, less sediment in the water, and higher oxygen levels. Why? Wolves. When the wolves came back to Yellowstone, the behavior of the deer and elk changed. They spend more time on higher ground, and along ridge lines where they are safer from ambush, and much less time browsing in stream beds where they destroy vegetation and stir up sediment. When the apex predators returned, they had a dramatic effect on the entire ecosystem.

    A reintroduction of wolves to central Utah would reduce the deer population, but also change their behavior. Another option would be to use biotechnology to bring back the American lion.

  6. Re:Open Season by bhcompy · · Score: 3, Informative

    Deers in Utah have tested positive for a prion disease and (human) hunters are wary of eating those deer(or even touching them, prions are basically impossible to destroy).

  7. Re:Open Season by Nidi62 · · Score: 2

    Unfortunately, the apex predator that you mention, humans, are restricted from hunting in the grove because human homes are too close.

    Year-round bow season. Problem solved.

    --
    The only thing necessary for evil to triumph is for it to be pitted against a slightly greater evil
  8. Re: Open Season by Type44Q · · Score: 3, Insightful

    and I know no one who has any problem touching or eating deer because of it.

    You will.

  9. Re:Open Season by arth1 · · Score: 3, Funny

    We are the apex predators. We used to hunt deer. Now we don't nearly as much. We should hunt and eat deer again.

    Barefoot, with spears.

  10. For those of you unfamiliar with American football by Solandri · · Score: 3, Funny

    a forest that spans more than 100 U.S. football fields

    For those of you unfamiliar with American football, 100 U.S. football fields is about 2.75 Libraries of Congress.

    (Kidding aside, it's a bit more than half a million square meters.)

  11. You missed a bit part of the GP in your haste by Anubis350 · · Score: 3, Insightful

    If you actually read the post you're replying to you'd note they talk about something human predation doesnt help with: behavioral change.

    Reintroduction of wolves in a number of places, notably, as the GP mentioned, Yellowstone, changes the behavior of prey animals and other members of the ecosystem. Humans just culling deer during hunting season doesnt do that.

    --
    "goodbye and hello, as always" ~Prince Corwin, from Zelazny's Amber series
  12. Re:Open Season by Ryanrule · · Score: 2

    or you know. deer tastes good.

  13. Re:Open Season by ShanghaiBill · · Score: 2

    The numbers are ridiculous even in the metro area. They had to start culling numbers.

    In California, the overpopulation of mule deer causes serious environmental destruction, erosion from over grazing, and even the near extinction of some tree species (they eat the seedlings). But every proposal to cull the deer is stopped by urban voters who think they are "saving Bambi's mother".

  14. Re:Open Season by TheCastro1689 · · Score: 2

    So far studies have not shown it to be transmittable to humans. But states with it usually have a way to get your animal tested.

  15. Re:Open Season by onepoint · · Score: 2

    As a kid, I was friends with a true Indian Family from the wilds of the midwest.
    I knew more about how to live off the land than I could ever imagine, learned
    some real weird shit that to this day, I never worry about camping, I just know
    how to do things.

    about deer:
    I learned how to deer tap. I never had the courage to try that with a bear.
    deer tapping is the art of stalking a deer in fresh wood in the autumn while
    they are rutting and mad as heck. the goal is simple, slap one in the rump
    and run for your life and not get raked. fastest I've ever done was 3 hours of
    stalking.

    so yes, a spear would be fun.

    --
    if you see me, smile and say hello.