Tree-Eating Beetles March Northward, Lured by Milder Winters. (The New York Times, 8/28/2017)
Historically, the tiny beetles, which starve evergreens to death, were largely unheard-of north of Delaware. The Northeast’s cold winters killed off any intruders.
The winters are no longer cold enough.
Over the last 50 years, average annual temperatures in the northeastern United States have warmed by about 1 degree Fahrenheit. But crucially for the beetles, the year’s coldest nights — which determine whether they survive the winter — have warmed by as much as 7 degrees Fahrenheit.
Southern pine beetle. (New York Department of Environmental Conservation)
Southern pine beetle kills New Jersey pine trees. (New Jersey Department of Environmental Protection)
Other climate change as a matter of fact posts:
Tangier Island, Virginia. (8/25/2017)
South of the Arctic Circle in Alaska. (8/25/2017)
New Orleans. (8/12/2017)
The Netherlands. (6/19/2017)
Global Seed Vault on the Norwegian island of Spitsbergen. (5/20/2017)
Madeline Island, Wisconsin. (2/23/2017)
Mexico City. (2/19/2017)
Moose of Maine. (1/21/2017)
Florida Keys. (1/14/2017)
California wine country. (1/11/2017)
Kaktovik, Alaska. (12/20/2016)
Alaska's Glacier Bay National Park. (7/7/2016)