If deer, other wildlife, and the forest itself co exist in harmony for over 80 years at densities of 25dpsm, and suddenly in the last ten years, that same forest can no longer support a fraction of that many deer AFTER 80 YEARS!!!!! It doesn't take a genius to figure out that another factor has come into play and altered that relationship, and it's not the deer. Two possible factors being forest management and pollution. WE are still learning much about how pollution is affecting our planet. Can bad air quality affect certain species of plant regeneration, as well as acid rain? There is a a broad area of the Rothrock SF where poor red oak regeneration has been specifically attributed to acid rain, and that assessment came straight from DCNR.