Every single passenger pigeon is dead. Within a human lifespan, the American Chestnut tree was virtually wiped off the map by the virus. Now one determined … By 1950, the American Chestnut tree was virtually extinct. First and foremost, the American chestnut never really went extinct. This was caused by an Asian bark fungus accidentally imported into North America. The European chestnut is also susceptible but due to widespread CHV1 hypoviruluence, blight-induced tree death is less common.
Image: Courtesy of the Forest History Society, Durham, NC.

Only a handful here and there along the eastern U.S. managed to hang on. They were once among the most common trees in New Jersey, but the American chestnut is virtually wiped out. For approximately 40 million years, the American Chestnut made up roughly 25% of the trees from Maine to Florida, and Mississippi to southern Michigan, with a population totaling around 4 billion.

Huge American chestnut trees in North Carolina, U.S.A., in 1910. Let’s look at the case of Castanea dentata, the American chestnut. The disease was first noticed on American chestnut trees in 1904 at the Bronx Zoo by Hermann Merkel who at that time was their chief forester. The American chestnut tree is threatened with extinction from blight because very few trees are producing nuts. These huge trees have been called the redwoods of the east. The American Chestnut dates back to 1800 and was an economic staple of the original homesteaders in the Appalachian Mountains. The term that is most applicable for the chestnut is “effectively extinct”. The American chestnut is not extinct! Once an important hardwood timber tree, the American chestnut became overwhelmingly susceptible to chestnut blight.

SYRACUSE — American chestnuts used to be unique and beautiful trees, providing sustenance and shelter for wildlife and a healthy and profitable nut crop for humans. There were once billions of them and their range stretched from Georgia and Alabama to Michigan, but the majestic tree was gone before forest science existed to document its role in the ecosystem. Can the nearly extinct American chestnut, once a mainstay, be revived?
These trees were huge, majestic and very long-lived compared to other species in America’s eastern forests. The American chestnut is not extinct. The forests of eastern North America were very different 100 years ago. But tragically, American chestnuts were almost entirely wiped out when an invasive blight […]

A legendary Ozark chestnut tree, thought extinct, is rediscovered The chinquapin was supposed to have been wiped out by blight. Whereas there are genetically pure, blight-resistant trees still living in the wild, but they are so widely distributed that they couldn't breed naturally—each surviving tree is documented, and researchers are still searching for more, such as on isolated Appalachian mountainslopes. The fungus can infect other tree species such as oaks, red maples, staghorn sumacs, and shagbark hickories. The wood was lightweight, weather-resistant, and very easy to chop and hand mill. A fungus plague has been attacking the American Chestnut tree population for over 100 years now. Mature trees … A devastating chestnut disease was first introduced in North America from an exported tree to New York City in 1904.This new American chestnut blight, caused by the chestnut blight fungus and presumably brought in from eastern Asia, was first found in only a few trees in the New York Zoological Garden. The American Chestnut and American chinquapin are highly susceptible to chestnut blight. What we see today is a forest that has experienced the extinction of its keystone species, the American Chestnut Tree. Scientists have been trying everything to save the tree from extinction. Sometimes reaching a height of more than 100 feet tall with trunk diameters often well over 10 feet, the American chestnut was the giant of the eastern U.S. forests. There are literally only a few dozen old growth chestnut trees left in the United States. I …

At the turn of the 20th century, Castanea dentata was one of the most important trees in eastern North American forests. The near-extinct American chestnut looks set to make a comeback. What was once known as the queen of Eastern America—the American Chestnut tree—is now nearly extinct?


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