Laurel wilt is a disease spread by the non-native red bay ambrosia beetle that affects trees in the laurel family. The disease, which originated from infested wood packing material, has killed native ...
Stan Boutin has climbed more than 5,000 spruce trees in the last 30 years. He has often returned to the forest floor knowing if a ball of twigs and moss within the tree contained newborn red squirrel pups. Over the years, those squirrels have taught Boutin and his colleagues many things, including an apparent ability to predict the future. Boutin, of the University of Alberta in Edmonton, was ...
A very noticeable fall equinox feature in these parts is when deciduous tree leaves turn from green to yellow or orange or sometimes red, then fade and waft to the ground. Middle Alaska doesn’t have many species of deciduous trees: paper birch, aspen, willows and balsam poplar are all part of the dominant boreal forest here.
As forests continue to be cleared and forested landscapes degraded by human activity, their loss can significantly affect the trees left standing, potentially changing the structure of forests, a ...
The Florida Times-Union: The ambrosia beetle could be the culprit in your avocado tree's demise. What to know
The ambrosia beetle could be the culprit in your avocado tree's demise. What to know
Interior Alaskan forests have only six native tree species: white spruce, black spruce, quaking aspen, balsam poplar, larch (tamarack) and paper birch. Northern Canadian forests have all of those, plus jack pine, balsam fir and lodgepole pine. Since northern Canada and interior Alaska share the same grueling climate and extremes of daylength, why are the Canadian tree species absent from ...