A number of habitats have been identified as both sensitive and vulnerable to acid deposition, including heathland, bog and grassland habitats. This report will focus on:
* acid grassland (lowland dry acid grassland, upland acid grassland);
* bogs (raised bogs, lowland blanket bog, blanket bog and valley mire);
* heathland (lowland heathland, subalpine dry dwarf-shrub heath, wet heath);
These habitats are amongst the most sensitive and vulnerable to nitrogen (N) deposition. They are also widespread habitats that occur in many SSSIs.
Across the investigated habitats, few of the existing CSM site condition indicator species were suitable for determining the impact of N deposition on a site. More evidence is needed on the impacts of N deposition on individual species.