We present an overview of high nitrogen deposition effects on coastal dune grasslands in NW-Europe (H2130), especially concerning grass encroachment in calcareous and acidic Grey Dunes. The problem is larger than previously assumed, because critical loads are still too high, and extra N-input from the sea may amount to 10 kg ha− 1 yr− 1. Grass encroachment clearly leads to loss of characteristic plant species, from approximately 16 in open dune grassland to 2 in tall-grass vegetation.
A.M. Kooijman, M. van Til, N. Noordijk, E. Remke & K. Kalbitz (2017) Nitrogen deposition and grass encroachment in calcareous and acidic Grey dunes (H2130) in NW-Europe. Biological Conservation 212B: pp 406-415