Piles of Rotting Woodchip

A pile of woodchip stored for use in a garden usually as a weed suppressing mulch. The heat building up in the pile is illustrated by the plumes of steam eminating from the top of the pile.

Aspergillus fumigatus is particularly well adapted to grow in the heat (up to 60C) found in such piles of rotting organic material and this characteristic, an adaption for its life in its natural environment also enables it to survive and grow in warm mammalian bodies at 37C. Most fungi cannot grow or survive at those temperatures