Arborists

The New York Times

As climate change accelerates, the trees in the Eastern forests of the United States are increasingly vulnerable. For many arborists, the challenges facing trees are reshaping and expanding the nature of their work. Many said they are spending more time on tree removal than ever before — taking down dead or unhealthy trees, or trees damaged or felled by storms.

We are a heavily treed state,” said Kristina Bezanson, an arborist and a lecturer at the University of Massachusetts Amherst. “We are having more tree problems that require lots of arborists, and there is a shortage of arborists.”

Many New England towns are verdant, and the area is roughly 75 percent forest — forests that have generally grown back twice, after clearing by colonists for agriculture and after logging for timber in the early 1900s. To the untrained eye, it looks good: lots of green.

Not to the trained eye.

— Marguerite Holloway