Visionary mycologist Paul Stamets is giving one of his totally awesome mushroom workshops tomorrow (Friday, 2/6/09) at the Community Church of NY; 40 East 35th Street, Between Park and Madison Avenues. It’s $20 and — if you’ve got it — well worth it.
Full details at New York Open Center. More about Stamets after the jump.
Saddled With Legacy of Dioxin, Town Considers an Odd Ally: The Mushroom
By ANNIE CORREAL
FORT BRAGG, Calif. — On a warm April evening, 90 people crowded into the cafeteria of Redwood Elementary School here to meet with representatives of the State Department of Toxic Substances Control.
The substance at issue was dioxin, a pollutant that infests the site of a former lumber mill in this town 130 miles north of San Francisco. And the method of cleanup being proposed was a novel one: mushrooms.
Mushrooms have been used in the cleaning up of oil spills, a process called bioremediation, but they have not been used to treat dioxin.
“I am going to make a heretical suggestion,” said Debra Scott, who works at a health food collective and has lived in the area for more than two decades, to whoops and cheers. “We could be the pilot study.”
Fort Bragg is in Mendocino County, a stretch of coast known for its grand seascapes, organic wineries and trailblazing politics: the county was the first in the nation to legalize medical marijuana and to ban genetically modified crops and animals.
Fort Bragg, population 7,000, never fit in here. Home to the country’s second-largest redwood mill for over a century, it was a working man’s town where the only wine tasting was at a row of smoky taverns. But change has come since the mill closed in 2002.
The town already has a Fair Trade coffee company and a raw food cooking school. The City Council is considering a ban on plastic grocery bags. And with the push for mushrooms, the town seems to have officially exchanged its grit for green.
The mill, owned by Georgia-Pacific, took up 420 acres, a space roughly half the size of Central Park, between downtown Fort Bragg and the Pacific Ocean. Among several toxic hot spots discovered here were five plots of soil with high levels of dioxin that Georgia-Pacific says were ash piles from 2001-2, when the mill burned wood from Bay Area landfills to create power and sell it to Pacific Gas & Electric.
Debate remains about how toxic dioxin is to humans, but the Department of Toxic Substances Control says there is no safe level of exposure.
Kimi Klein, a human health toxicologist with the department, said that although the dioxin on the mill site was not the most toxic dioxin out there, there was “very good evidence” that chronic exposure to dioxin caused cancer and “it is our policy to say if any chemical causes cancer there is no safe level.”
Fort Bragg must clean the dioxin-contaminated coastline this year or risk losing a $4.2 million grant from the California Coastal Conservancy for a coastal trail. Its options: haul the soil in a thousand truckloads to a landfill about 200 miles away, or bury it on site in a plastic-lined, 1.3-acre landfill.
Alarmed by the ultimatum, residents called in Paul E. Stamets, author of “Mycelium Running: How Mushrooms Can Help Save the World.”
Typically, contaminated soil is hauled off, buried or burned. Using the mushroom method, Mr. Stamets said, it is put in plots, strewn with straw and left alone with mushroom spawn. The spawn release a fine, threadlike web called mycelium that secretes enzymes “like little Pac-Mans that break down molecular bonds,” Mr. Stamets said. And presto: toxins fall apart.
In January, Mr. Stamets came down from Fungi Perfecti, his mushroom farm in Olympia, Wash. He walked the three-mile coastline at the site, winding around rocky coves on wind-swept bluffs where grass has grown over an airstrip but barely conceals the ash piles. It was “one of the most beautiful places in the world, hands down,” he said.
Quick to caution against easy remedies — “I am not a panacea for all their problems” — he said he had hope for cleaning up dioxin and other hazardous substances on the site. “The less recalcitrant toxins could be broken down within 10 years.”
At least two dioxin-degrading species of mushroom indigenous to the Northern California coast could work, he said: turkey tail and oyster mushrooms. Turkey tails have ruffled edges and are made into medicinal tea. Oyster mushrooms have domed tops and are frequently found in Asian food.
Local mushroom enthusiasts envision the site as a global center for the study of bioremediation that could even export fungi to other polluted communities.
“Eventually, it could be covered in mushrooms,” said Antonio Wuttke, who lives in neighboring Mendocino and describes his occupation as environmental landscape designer, over a cup of organic Sumatra at the Headlands Coffeehouse.
The proposal is not without critics, however.
“There still needs to be further testing on whether it works on dioxin,” said Edgardo R. Gillera, a hazardous substances scientist for the State Department of Toxic Substances Control. “There has only been a handful of tests, in labs and field studies on a much smaller scale. I need to see more studies on a larger scale to consider it a viable option.”
On April 14, at a packed City Council meeting, an environmental consultant hired by the city voiced skepticism, citing a study finding that mushrooms reduced dioxins by only 50 percent. Jonathan Shepard, a soccer coach, stood up and asked: “Why ‘only’? I think we should rephrase that. I think we should give thanks and praise to a merciful God that provided a mushroom that eats the worst possible toxin that man can create.”
Jim Tarbell, an author and something of a sociologist of the Mendocino Coast, said the enthusiasm for bioremediation showed a change in the culture at large.
“We are trying to move from the extraction economy to the restoration economy,” Mr. Tarbell said. “I think that’s a choice that a broad cross-section of the country is going to have to look at.”
At the April 14 meeting, Georgia-Pacific promised to finance a pilot project. Roger J. Hilarides, who manages cleanups for the company, offered the city at least one 10-cubic-yard bin of dioxin-laced soil and a 5-year lease on the site’s greenhouse and drying sheds for mushroom testing. And the City Council said it would approve the landfill but only if it came with bioremediation experiments.
So, sometime later this year, Mr. Stamets is scheduled to begin testing a dump truck’s load of dioxin-laced dirt in Fort Bragg.
“One bin. Ten cubic yards. That’s a beginning,” said Dave Turner, a Council member. “I have hope — I wouldn’t bet my house on it — but I have a hope we can bioremediate this.”
Mycova: Helping the Ecosystem through Mushroom Cultivation
Adapted from the article, “Earth’s Natural Internet” by Paul Stamets, published in the Fall 1999 issue of Whole Earth Magazine
Mushroom growing isn’t just a rapidly expanding agribusiness; it’s also a significant tool for the restoration, replenishment and remediation of Earth’s overburdened ecosphere. Like most people, we at Fungi Perfecti are concerned about the depletion of resources, loss of habitat and release of toxic substances into the environment. We’d like to show you some of the many ways in which the cultivation of mushrooms can help to tip the scales in Nature’s favor, thereby benefiting all the inhabitants of Planet Earth.
Farmers, gardeners and scientists have long known about the importance of healthy soil. Human populations have ebbed and flowed according to the carrying capacities of their environment and the food chain it provides. But despite our long history with our environment, we know surprisingly little about the ground beneath our feet. And yet, it is the very soil upon which we depend that is in dire jeopardy. Unless we begin to understand and utilize the dynamics of soil creation, the matrix of life on this planet may begin to unravel. Genetic diversity and resilience could suffer to the point of mass extinctions, the scope of which could be comparable to the cataclysms of 60 million years ago. These extinctions appear to be underway—we are noticing only the more obvious victims.
Covering most all landmasses on the planet are huge masses of fine filaments of living cells from a kingdom barely explored. More than 8 miles of these cells, called mycelia, can permeate a cubic inch of soil. Fungal mats are now known as the largest biological entities on the planet, with some individuals covering more than 20,000 acres. Growing outwards at one quarter to two inches per day, the momentum of mycelial mass from a single mushroom species staggers the imagination. These silent mycelial tsunamis affect all biological systems upon which they are dependent. As they mature and die back, panoply of other fungi quickly come into play. Every ounce of soil does not host just one species, but literally thousands of species of fungi. Of the estimated 1–2 million species of fungi—about 150,000 species being mushrooms—we have catalogued only about 50,000, of which 14,000 have been identified with a species name. The genetic diversity of fungi is vast by design, and apparently crucial for life to continue.
Waves of mycelial networks intersect and permeate through one another. This interspersing of mycelial colonies is the foundation of soils worldwide. Although seemingly undifferentiated under the microscope, the ability of fungi to respond to natural disasters and sudden changes in the environment are a testimonial to their inherent intelligence. I believe that mycelia are Earth’s natural Internet, the essential wiring of the Gaian consciousness. The recent creation of the computer Internet is merely an extension of a successful biological model that has evolved on this planet for billions of years. The timing of the computer Internet should not be construed as a happenstance occurrence. Sharing intelligence might be the only way to save an endangered ecosystem. The planet is calling out to us. Will we listen in time? The lessons are around us. Will we learn?
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