POTENTIAL IMPACTS OF AFFORESTATION AND CLIMATE-CHANGE ON THE STREAM WATER CHEMISTRY OF THE MONACHYLE CATCHMENT

MAGIC (Model of Acidification of Groundwater in Catchments) has been a pplied to the Monachyle catchment at Balquhidder. This site is affecte d by wet and dry deposition of oxides of sulphur and nitrogen. The cat chment is shown to be a transition site and potentially vulnerable to land use change such as afforestation, especially if coupled with cont inuing high levels of acid deposition. Moreover, a changing climate ma y affect the long-term hydrochemical response. MAGIC has been used to illustrate the potential interactions between land use, acid depositio n and climate change on this particular catchment.