Scientists seek to help troubled urban forests
Natalie van Doorn, a research ecologist with the U.S. Forest Service, said that many of the trees commonly planted in urban areas in California are temperate species that require a lot of water to survive in hot and dry conditions. … Across the U.S., metropolitan areas may lose an average of 6 percent of their tree species as warming trends continue. … Alison Berry, a professor of plant sciences at the University of California-Davis, said that drought stress was likely a bigger factor than heat.