In many regions, particularly in the southern Appalachians, the loss of hemlock to hemlock woolly adelgid has been devastating. However, when Forest Service scientists used regional Forest Inventory & Analysis data to get a big picture view of the status of hemlock in the eastern US, the results surprised them.
Fuente : http://www.eurekalert.org/pub_releases/2014-01/ufs...
Fuente : http://www.eurekalert.org/pub_releases/2014-01/ufs...