The densities I provided were from the study by de Calesta and that study was conducted in contiguos hardwoods of NW PA, Here is a quote which describes the study.

"Based on a 10-year, deer-enclosure study (de-
Calesta 1994) we estimated K and RDD levels associ-
ated with deer impact on many forest resources. The
study incorporated 4 65-ha study sites in northwest-
ern Pennsylvania divided into 4 deer enclosures. We
designed the study intending to maintain white-tailed
deer densities of 4, 8, 16, and 32/km2 within the en-
closures for 10 years. As all sites were within large
blocks of contiguous second-growth forest, we
opened each enclosure by 10% clearcutting and 30%
thinning for forage creation. We used only adult fe-
male deer, and we replaced losses due to escapes,
predation, starvation, or poaching every spring to
maintain desired densities. the basic relationships of K to RDD values extracted
from the study will apply to other landscapes, pro-
viding a useful starting point for integrating manage-
ment of deer and other forest resources based on
deer density and forage availability. Absolute deer
densities at each of the RDD values may differ among
landscapes with different quality and quantity of deer
forage, but we hypothesize that the ratios of RDD to
K will be consistent.
We summarized the interactions of deer with plant
communities as a function of RDD and integrated re-
sults of deer impact studies with McCullough