Overgrazing has two significant impacts on dune grassland habitats. Firstly, on systems already in the process of succession to mature species-poor habitats, the nutrient input from large numbers of grazing animals will exacerbate the situation. Secondly, large numbers of grazing animals, and particularly sheep, will cause a significant reduction in the number of plants setting seed which, over an extended period, would have a negative impact on the seedbank. This limits the potential for successful habitat restoration in the future.