they claim that heavy browsing by deer indicates that there is a lack of adequate food for the size of the herd in a given area with high browsing impact.
Obviously even with high levels of browse damage, there is more than "adequate" food- relative to the herd size atleast, or that lack would correspond with a negative impact on herd health, with one measure of such being breeding rates. I haven't viewed much of the report yet, but I am curious if fawn breeding rates have improved or remained the same.