Pando: Earth’s Largest and Oldest Multicellular Organism

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The Earth’s Elder – Discover Magazine

If you were to meet Pando — which you could easily do, if you paid a visit to Fishlake National Forest in Utah — it would look like a forest of Quivering Ash trees. But if you happened to be equipped to do DNA testing on plant specimens, you would realize that all of the trees were genetically identical. That’s because they’re all part of the same tree, sharing a common root system. One tree springs from a seed, long ago, and spreads out roots; but then more trees erupt from those roots, and the process simply continues. Individual “trees” might die, but that’s like you or me losing a toenail; Pando lives on. It weighs in at over six million kilograms, and is likely more than 80,000 years old (although it might be much older).

Wikipedia provides some information on the largest organism on Earth by area, but there is some debate whether this fungus is contiguous or just a tight collective of clones.

A mushroom of this type in the Malheur National Forest in the Strawberry Mountains of eastern Oregon, U.S. was found to be the largest fungal colony in the world, spanning 8.9 km² (2,200 acres) of area. This organism is estimated to be 2,400 years old. The fungus was written about in the April 2003 issue of the Canadian Journal of Forest Research. While an accurate estimate has not been made, the total mass of the colony may be as much as 605 tons. If this colony is considered a single organism, then it is the largest known organism in the world by area, and rivals the aspen grove “Pando” as the known organism with the highest living biomass.

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  • Hi Joan:

    Thanks for your kind words.

    Pando is "Quaking Aspen" - see more here: http://en.wikipedia.org/wiki/Pando_(tree)

    Quite amazing, IMO.

    Best,

    Kurt
  • Jofolly
    Is Pando a grove of Ash or Aspen? I'm assuming
    it looks like ash but it's really aspen right.

    Overall a good artiacal

    Thanks Joan Balkwill
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