Although much of September felt almost summery, we now see signs of fall as October arrives.
This week, our programming will focus on the change of season. One of the first signs is that we will host the Door Peninsula Mushroom Club’s Fall Fungi Fest on Saturday, October 4, from 9:00 to 2:00. This will be immediately followed by our weekly Science Saturday Family program, “Signs of Fall.”
In our afterschool program, Environmental Exploration, on Tuesday, we will visit wetlands in the fall (which this year are not very wet—but wetlands nonetheless). The topic for this week’s Junior Nature Club is “Colors,” so we will be looking at autumn leaves.
One of the children attending Junior Nature Club asked, "In the fall, why do things die so much?”
We find the answer in David Arora’s classic book Mushrooms Demystified:
“One of the more obvious laws of nature is that existing life must die if new life is to flourish… if there were no vehicle for the disposal of dead matter, there soon would be no need for one—we would all be buried under a blanket of inert matter.
‘Fungi, along with bacteria, are precisely that vehicle. They are nature’s recyclers, the soil’s replenishers. Fungi and bacteria reduce complex organic compounds into simpler building blocks, enabling plants to reuse them. Thus, in a very profound way, fungi are life givers and destroyers.”
That recycling role makes fungi a perfect focus for our fall explorations.” So during our various activities this week, we will observe the fruiting bodies of fungi—the mushrooms.
Admittedly, some parasitic fungi feed on living organisms, but most fungi live on dead and decaying matter or form mutually beneficial relationships with plants. These are the fungi that make mushrooms. But don’t assume that all mushrooms look like chubby umbrellas.
Mushrooms develop in a dazzling array of sizes, shapes, and spore dispersal methods. I was taught that “mushrooms are to fungi what apples are to an apple tree,” but that comparison is a stretch. Fungi are not plants, and spores are nothing like seeds. But mushrooms do form so that fungi can release tens of thousands of spores to reproduce.
Autumn mushrooms are indeed a sign of fall—but not a dependable one. Mushrooms are neither plants nor animals and don’t respond to hours of daylight or human calendars. There is, however, some evidence that they follow internal rhythms that regulate when they appear.
Often they emerge after rain and a sudden drop in temperature. But humid air and a damp surface—a rotting log, decaying leaf litter, moist soil—can also trigger fruiting. Or not. Sometimes a fungus is worn out, lacks dead material, or …well, who knows?
Fungi do. They—without brains—“know” exactly when spores are most likely to germinate.
Other signs of fall, such as autumn colors (dependent on early fall sunshine), leaf drop, and bird migration, we can count on. And maybe we will also see these things—and a whole bunch of truly bizarre-shaped mushrooms—as we get in touch with nature in the fall.
Saturday, October 4
9:00-2:00 Fall Fungi Fest
Enjoy the Door Peninsula Mushroom Club’s Fall Fungi Fest. Meet mushroom growers, vendors, artisans, and enthusiasts. Collins Learning Center, Crossroads, 2041 Michigan, Sturgeon Bay.
Saturday, October 4
2:00 Science Saturday: Signs of Fall
Explore Crossroad’s forest edges as we search for signs of fall. This program is intended for school-aged children, but learners of all ages are welcome. It is free and open to the public. Meet in the Collins Learning Center, Crossroads, 2041 Michigan, Sturgeon Bay.
Monday, October 6
1:30 Movie Matinee: The Magic of the Snowy Owl
Enjoy an intimate look at the snowy owl. Filmmakers take us into the owls’ tundra home. Free and open to the public. Meet in the Collins Learning Center, Crossroads, 2041 Michigan, Sturgeon Bay.
Tuesday, October 7
3:30 Environmental Exploration – Fall Wetlands
This after-school family program, geared for school-aged students, will—weather permitting—include a hike to observe signs of fall in a wetland area. It may not be very soggy this time of year, but it is still home to wetland species and creatures. Dress for the weather. This program is free and open to all ages. Meet at the Collins Learning Center, Crossroads, 2041 Michigan, Sturgeon Bay.
Wednesday, October 8
10:00 Junior Nature Club
This program explores nature and includes free play for children ages 3–5 and their adult companions. The topic will be colors and other signs of fall. No pre-registration is required. Meet at the Collins Learning Center, Crossroads, 2041 Michigan, Sturgeon Bay.
1:30 Wandering Wednesday
Join a naturalist on a guided hike along Crossroads's trails, looking for signs of fall. The hike is easy and takes about an hour. No pre-registration is required. Meet at the Collins Learning Center, Crossroads, 2041 Michigan, Sturgeon Bay.