Biologists have long thought that the spores produced by a mushroom’s cap simply drop into the wind and blow away. The problem with that notion, said Emilie Dressaire, a professor of experimental fluid mechanics at Trinity College in Hartford, Conn., is that spores can be dispersed even when the air is still. So how do the mushrooms do it? Dressaire, along with Marcus Roper of the University of California, Los Angeles (UCLA), believe they have found the answer: they make their own wind.
Dressaire will present the findings in a talk today at the 66th Annual Meeting of the American Physical Society’s (APS) Division of Fluid Dynamics (DFD), held Nov. 24-26, 2013, in Pittsburgh, Pa.
Using high-speed videography and mathematical modeling of spore dispersal in commercially grown oyster and Shiitake mushrooms, Dressaire, Roper, and their students 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.
Caption: The spores released by an Amanita form a cloud of bright little specks. Credit: Patrick Hickey
For a long time, I always tried to write music with the goal of sounding like other composers because for a lot of reasons, I wanted to say the same things that they had already said. In the past few months I’ve chosen to write through my own perspective, saying the things that I want to say and this has, gladly, made things exponentially easier for me, ultimately. I don’t suffer from writer’s block anymore (I had been for a long time previously), and I’m really happy with what I’m producing….
However, now everything I write sounds completely absurd…
“These yellow, banana-like fruits can be picked and consumed by other Pokémon or humans, and grow twice a year because of the rapid production of sugar in Tropius’s leaves.” Are you fucking serious? If bananas grew on your dog would you eat them?!
it just fucking stares at him the whole time