Deer prefer native plants leaving lasting damage on forests. When rampant white-tailed deer graze in forests, they prefer to eat native plants over certain unpalatable invasive plants, such as garlic mustard and Japanese stiltgrass. These eating habits lower native plant diversity and abundance, while increasing the proportion of plant communities made up of non-native species, according to a new study. Source 1f.
Deer (Hover)
Deer are always a problem and with man killing off Coyotes and wolves you make the deer population explode in those regions. Yes men hunt deer too but they can not stop them from being a invasive species that does real harm to the area Especially in a national park or other non hunting land.