| 1457008 |
black ash decline |
|
General decline in wetland black ash, regionally widespread in northern MN, WI and MI in 2003-2005. The cause is undetermined though drought is likely in this instance. Tree mortality did occur, crown dieback and decline was common. Photo taken near Cloquet, MN, 2005. |
| 1457006 |
black ash decline |
|
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. |
| 1398203 |
spruce decline |
|
Recently killed white spruce on the Chequamegon national Forest, Wisconsin. Mortality agent apparently a combination of drought, spruce budworm and armillaria root disease. |
| 1398202 |
spruce decline |
|
White spruce in northern Wisconsin dying of a general stand decline, cause apparently drought related, 2004, Chequamegon National Forest |
| 1457007 |
black ash decline |
|
Black ash decline symptoms, summer 2004, near Cloquest, MN |