(Perceval) What are those so-called "Fairy Circles" in the desert in Namibia?
A: Related to fungal spread under surface.
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I find that odd. Most of researchers point to the cause as either plant competition for water and/or termites.
Some studies did mention fungi might play a secondary role, but I didn't find any claiming they are the main cause.
In Australia there is a similar phenomenon and, notably, there are no termite species there! This points to the plants' competition for water as the cause.
The leading hypothesis is, basically, plants that grew first will get all the water, thus leaving the surrounding soil drier for would-be plants.
