There lives a giant among us, and he grows quietly in the dense forests of Utah. In the heart of the Fishlake National Forest. The second largest living organism on Earth is found here. Covered in light bark and yellow leaves, Pando, or the Trembling Giant, occupies a vast area of forest.
Pando, or "Trembling Giant," is a massive aspen grove located in the Fishlake National Forest, Utah. The grove consists of approximately 47,000 trees, all genetically identical and sharing a single root system. This makes the entire grove a single living organism and one of the largest on the planet.
Aspens, with their vibrantly colored leaves and striking patterns on their grayish or white bark, are among the most beautiful trees. They also possess a unique characteristic. Each individual tree in an aspen grove is essentially part of a single, massive tree. They share a common root system, and the roots cover vast areas of the ground. The trees we see above ground are actually shoots that emerge from the roots underground under favorable environmental conditions.
The aspen trees growing in the Trembling Giant Forest are a species known as "quaking aspen." They are so named because they rustle in the slightest breeze, producing a trembling sound. Burton W. Barnes of the University of Michigan discovered the forest in the 1970s. Paul Rogers, an ecologist at the University of Utah, identified the Pando inhabitants as male.
The Pando Grove contains over 47,000 trees. Each tree has the same genetic makeup. In other words, they are clones of each other, making the grove a single living organism. In 1992, the Organization for Economic Cooperation and Development declared the grove "the most massive organism in the world." It currently ranks second only to the giant honey mushroom, which covers 9.6 square kilometers in Oregon.
Pando covers 43 hectares and weighs nearly 6,000 metric tons. It contains over 40,000 stems, which die off individually, and new stems grow in their place from the roots.
Aspen trees reproduce by suckering. This is a form of asexual reproduction, in which an individual trunk is capable of producing lateral roots. These roots, under favorable environmental conditions, grow into straight trunks. Above ground, these trunks appear as individual trees. But underground, they are all connected by a single root system. This process repeats, and aspens cover large areas.
The Trembling Giant Grove covers an area of 43 hectares (0.43 square kilometers or 106 acres). The entire grove weighs nearly 6,000 metric tons. Although the grove itself is a single organism, the death and regrowth of different tree parts occur independently.
Experts estimate Pando's age at approximately 80,000 years, making him one of the oldest living creatures. This age estimate is based on a complex set of factors.
There is much debate about determining the age of an aspen grove. Tree rings are typically used to determine a tree's age. However, this is impossible with an aspen grove, as the trees growing on the ground are part of a single, massive tree. Therefore, age determination has had to be done by examining the roots.
To determine Pando's age, many complex factors were taken into account. These include the history of the local environment, the soil conditions in the area, the growth rate of aspen trees, and the distance from sea level. Taking all these factors into account, Pando's age was estimated at approximately 80,000 years. This means that Pando existed even before the dawn of modern human civilization. This makes Pando the oldest living organism on the planet!
Unfortunately, the future of this giant looks bleak. The trees are constantly suffering from drought, bark beetles, fungal diseases, and overgrazing.
Pando plant stems are often attacked by pests, diseases, and natural disasters. They die and then regrow through the roots. However, new evidence suggests that the roots are being attacked, which has reduced their ability to regenerate. Dead stems do not regrow. If this continues, the grove will begin to shrink.
As of 2013, a restoration project is underway to preserve the Pando Grove. Part of the grove is fenced off, allowing new trunks to grow without any external influences, such as grazing. Research is underway on the trees to learn more about them and determine conservation measures.
[source: 1,2,3]