"A wild landscape has wild animals, and so the first step for Knepp was returning large mammals to the Knepp Estate fields and thickets, including fallow, roe, and red deer, Tamworth hogs, Exmoor ponies, and longhorn cattle, as the actions of these animals on the environment creates a very unique reaction from the land.
“Disturbance from grazing, browsing, rootling, rubbing and trampling, provides a check on [overgrowing] scrub; and the battle between these two processes–animal disturbance vs vegetation succession–creates all sorts of vegetation structures which contribute to a dynamic, ever-shifting mosaic of valuable habitats,” explains the Knepp Rewilding Project website."
https://www.goodnewsnetwork.org/knepp-estate-rewilding-project-is-one-of-englands-most-successful/
“Disturbance from grazing, browsing, rootling, rubbing and trampling, provides a check on [overgrowing] scrub; and the battle between these two processes–animal disturbance vs vegetation succession–creates all sorts of vegetation structures which contribute to a dynamic, ever-shifting mosaic of valuable habitats,” explains the Knepp Rewilding Project website."
https://www.goodnewsnetwork.org/knepp-estate-rewilding-project-is-one-of-englands-most-successful/