The first specific activity is to apply the MAGIC model to >120 forested sites in Wales using regional databases on soil and water quality. The regional methodology will be a two stage coupling of Monte-Carlo simulations with a calibration procedure designed to produce a fit to the joint distribution of key freshwater quality variables. Application of MAGIC-WAND to the Acid Waters Monitoring Network sites will be carried out to determine processes such as catchment uptake, mineralisation, immobilisation, on a regional basis. Following the site specific application of the MERLIN model at Aber, a further Monte-Carlo analysis will be undertaken using regional characterisics and detailed data from the Welsh regional forest survey as part of a sensitivity exercise.
The study region and sampling locations