Which types of trees and forests are at risk?

Dear EarthTalk: How will global warming change the distribution of trees across the continental U.S.? Which types of trees and forests are most at risk?     — Mike Powers, Golden, Colo.

 

It’s true that climate change is already affecting tree distribution and forest cover in the United States (as well as everywhere), but only time will tell which tree species are most successful at adapting and whether we will lose significant amounts of forest cover overall.

“A walk in the woods or a stroll on a tree-lined street could be a very different experience just a few decades from now,” says U.S. Forest Service researcher Stephanie Worley Firley. “Higher temperatures, altered precipitation patterns and longer growing seasons predicted for the future could require that some tree species will have to move — or be moved — into new areas where habitat will be more suitable.” She adds that some tree species may be able to stay in place by adapting to new conditions, but many others are unlikely to be able to adapt and “may succumb to the pressures of climate change.”

One example of an iconic tree species that is already suffering from the effects of climate change is the Quaking Aspen, the most widely distributed tree species in North America. Given their shallow root systems, aspens are particularly sensitive to drought; warmer, drier weather overall as a result of global warming means more drought and more trouble for the trees moving forward. Researchers worry that aspens may be gone from the southern (and driest) band of its range within decades, and foresee drastic declines in the tree’s overall distribution as temperatures inch up, drought pervades and forest fires rage throughout the region.

Some other tree species on the ropes thanks to climate change include Sugar maple, Balsam fir, Black ash, Paper birch, White pine, Tamarack and Red spruce.

EarthTalk® is produced by Roddy Scheer & Doug Moss for the 501(C)3 nonprofit EarthTalk. See more at www.emagazine.com. Send questions to: question@earthtalk.org.

Latest News

Walking among the ‘Herd’

Michel Negreponte

Submitted

‘Herd,” a film by Michel Negreponte, will be screening at The Norfolk Library on Saturday April 13 at 5:30 p.m. This mesmerizing documentary investigates the relationship between humans and other sentient beings by following a herd of shaggy Belted Galloway cattle through a little more than a year of their lives.

Negreponte and his wife have had a second home just outside of Livingston Manor, in the southwest corner of the Catskills, for many years. Like many during the pandemic, they moved up north for what they thought would be a few weeks, and now seldom return to their city dwelling. Adjacent to their property is a privately owned farm and when a herd of Belted Galloways arrived, Negreponte realized the subject of his new film.

Keep ReadingShow less
Fresh perspectives in Norfolk Library film series

Diego Ongaro

Photo submitted

Parisian filmmaker Diego Ongaro, who has been living in Norfolk for the past 20 years, has composed a collection of films for viewing based on his unique taste.

The series, titled “Visions of Europe,” began over the winter at the Norfolk Library with a focus on under-the-radar contemporary films with unique voices, highlighting the creative richness and vitality of the European film landscape.

Keep ReadingShow less
New ground to cover and plenty of groundcover

Young native pachysandra from Lindera Nursery shows a variety of color and delicate flowers.

Dee Salomon

It is still too early to sow seeds outside, except for peas, both the edible and floral kind. I have transplanted a few shrubs and a dogwood tree that was root pruned in the fall. I have also moved a few hellebores that seeded in the near woods back into their garden beds near the house; they seem not to mind the few frosty mornings we have recently had. In years past I would have been cleaning up the plant beds but I now know better and will wait at least six weeks more. I have instead found the most perfect time-consuming activity for early spring: teasing out Vinca minor, also known as periwinkle and myrtle, from the ground in places it was never meant to be.

Planting the stuff in the first place is my biggest ever garden regret. It was recommended to me as a groundcover that would hold together a hillside, bare after a removal of invasive plants save for a dozen or so trees. And here we are, twelve years later; there is vinca everywhere. It blankets the hillside and has crept over the top into the woods. It has made its way left and right. I am convinced that vinca is the plastic of the plant world. The stuff won’t die. (The name Vinca comes from the Latin ‘vincire’ which means ‘to bind or fetter.’) Last year I pulled a bunch and left it strewn on the roof of the root cellar for 6 months and the leaves were still green.

Keep ReadingShow less