Northern forests are facing unprecedented stressors. On top of a legacy of cation depletion from acid rain, the forests now face changing climate, especially changing winters, and related increase in browse pressure from white-tailed deer.  Beech-bark disease and sugar maple decline continue to impact forest structure and function.  Using examples from our long-term vegetation work at Hubbard Brook Experimental Forest, field researcher Nat Cleavitt will present what we currently know about impacts of these stressors and what we hope to know by continuing current or initiating future studies.