black ash decline
Host: black ash (Fraxinus nigra
Description: General decline in wetland black ash stands. Cause undetermined, though regional drought conditions are the most likely cause. Widespread tree mortality as well as branch dieback. Common across northern MN and WI in 2003-2005. Photo taken near Cloquet, MN, 2005.
Image type: Field
Image location: United States
Name: Steven Katovich
Organization: USDA Forest Service
Country: United States