Scientists Discover Hidden Biological Network Under World's Oldest Tree

Deep within the temperate rainforests of Chile stands the Gran Abuelo, an ancient alerce tree estimated to be nearly 5,500 years old.

locationChile

otherGran Abuelo

otheralerce

Scientists have discovered that the soil beneath this ancient giant is a 'microbial metropolis,' home to over 300 unique species of fungi.

otherfungus

This underground biological network represents a critical hub for the forest, where the tree and fungi engage in a vital mutualistic relationship.

otherfungus

The tree provides sugars, while the fungi act as an extended root system, scavenging for water and nutrients.

otherfungus

This 'Wood Wide Web' supports the tree during harsh droughts and reinforces the entire forest's resilience.

conceptwood wide web

These 'Mother Trees' function as lynchpins for ecosystem health, proving that forests are far more than just individual trees—they are highly interdependent, social communities.

conceptmother tree

conceptecosystem

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Comprehension Questions

What is the primary role of the fungal network discovered under the Gran Abuelo?

It acts as an extension of the tree's root system to provide water and nutrients.

It competes with the tree for limited soil sunlight.

It mainly decomposes dead leaves to clean the forest floor.

Reveal Answer

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Correct Choice

It acts as an extension of the tree's root system to provide water and nutrients.

How does the relationship between the tree and the fungi benefit the tree?

The fungi help the tree survive stressors like droughts by providing water and minerals.

The fungi provide oxygen to the tree's roots.

The fungi provide protection against invasive insects.

Reveal Answer

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Correct Choice

The fungi help the tree survive stressors like droughts by providing water and minerals.

Why are ancient trees like the Gran Abuelo referred to as 'Mother Trees'?

Because they are the only trees that can grow in the shade.

Because they produce more seeds than younger trees in the forest.

Because they serve as central hubs that maintain the health and stability of the entire forest ecosystem.

Reveal Answer

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Correct Choice

Because they serve as central hubs that maintain the health and stability of the entire forest ecosystem.

What could happen if an ancient tree like the Gran Abuelo were lost?

It could destroy the complex underground community, causing a domino effect of environmental damage.

The forest would grow faster due to less competition for resources.

The soil would become more fertile for younger trees.

Reveal Answer

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Correct Choice

It could destroy the complex underground community, causing a domino effect of environmental damage.

How does the fungal biodiversity under the Gran Abuelo compare to younger trees?

It is exactly the same as the soil around younger trees.

It is roughly 2.25 times more biodiverse in fungal species.

It is significantly lower because the tree uses all the resources.

Reveal Answer

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Correct Choice

It is roughly 2.25 times more biodiverse in fungal species.

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