By Jeff Mulhollem, Pennsylvania State University
"Lingering ash." That's what the U.S. Forest Service calls the relatively few green and white ash trees that survive the emerald ash borer onslaught. Those trees do not survive by accident, and that may save the species, according to Penn State researchers, who conducted a six-year study of ash decline and mortality.
By Katie Pavid
Scientists believe that the arrival of just one more ash dieback spore could kill off Europe's remaining ash trees.
The dieback problem could have been caused by just one or two mushroom-like fruiting bodies of a fungal pathogen, according to a comprehensive genome sequence study published in Nature Ecology & Evolution.
By Susan Milius
An invasive beetle has unexpected — and potentially troublesome — tastes in trees. Now two new studies are clarifying the insects’ dining habits, researchers reported at the annual Entomological Society of America meeting.
