Carly Stevens. The impact of atmospheric nitrogen deposition on ecosystems
Atmospheric nitrogen deposition is a global problem with levels increasing in many regions of the world. It represents a major threat to ecosystems globally with the potential to alter nutrient cycling, acidify soils and consequently change species composition. In Europe many different types of habitat are potentially threatened by the eutrophying and acidifying effects of nitrogen deposition. Surveys at national and international levels indicate reductions in plant species richness and increases in above-ground biomass associated with increasing N deposition in a range of habitats including grasslands, heathlands and bogs. This presentation will highlight some of the results from surveys conducted in recent years across a range of scales as well as national modelling studies using volunteer collected data focused on the responses of individual species.