Releases of water vapor create convective movements
By Summit Voice
FRISCO — We’ve all heard of microclimates, where topography and other factors can affect weather on a very local level. But new research suggests that mushrooms take that concept to whole new level, creating their own mini-windstorms to help spread spores.
Biologists have long thought that the spores produced by a mushroom’s cap simply drop into the wind and blow away. But observers have noted that spores disperse even when the air is still. It took a detailed study by fluid dynamics researchers find the answer.
Using high-speed videography and mathematical modeling of spore dispersal in commercially grown oyster and Shiitake mushrooms, they found that the fungi created their wind by releasing water vapor. The vapor cools the air locally, and this creates convective cells that move the air around in the mushroom’s vicinity. (more…)