In addition, small areas of local clay and historical imported soils give rise to areas of neutral grassland. Where possible we manage several of these neutral grassland areas meadows, with suitable hay bales going to feed the horses in nearby Richmond Park.
Aside from the specific threat from encroaching scrub onto the acid grassland, in general the grasslands of the common are under threat from nitrogen pollution from vehicle exhausts and dog excrement. Both cause nutrient enrichment of the soils which can disrupt the fragile ecology of these habitats.
You can help by making sure to pick up after your dog when out on the Common.