Title: Land use influences on acidification and recovery of freshwaters in Galloway, south-west Scotland 
Resource Type: document --> technical publication --> journal article 
Country: EU Projects 
Year: 2001 
Availability: Hydrology and Earth System Sciences Vol. 5, No. 3, 451-458. 
Author 1/Producer: Helliwell, R.C., 
Other Authors/Producers: Ferrier, R.C., Johnston, L. and Goodwin, J. 
Author / Producer Type: EC Project 
Publisher: Macauly Land Use Research Institute 
Publisher City: Aberdeen, AB15 8QH, UK 
Article Weblink (=direct link): http://www.mluri.sari.ac.uk/recover/HESS451-458.htm  
Format (e.g. PDF): HTML 
EUGRIS Keyword(s): Diffuse pollution-->Diffuse pollution overview
Diffuse pollution-->Scales
Diffuse pollution-->Sources
Water resources and their management -->Stresses, quality and ecological status
 
Short description: The paper investigates the long term response of surface waters to changes in sulphur deposition and afforestation in three upland river systems in south-west Scotland. From 1984 to 1999 non-marine sulphate concentrations in the rivers declined significantly in response to reduced acid deposition. This was insufficient to induce a pH recovery over the period. A significant increase in river pH was observed between 1956-1970 (0.05 yr-1), due largely to subsidised applications of lime: after the subsidy ceased in 1976, ph decreased. Mean annual pH was greatest during a dry period between 1969 and 1973 when annual total discharge was low after which time it declined gradually. There is evidence that afforested catchments are more acidic than moorland, indicating that in afforested catchments current reductions in sulphur emissions have not led to an observed improvement in the acid status of surface waters. Forestry, therefore, inhibits chemical recovery from acidification in this region. 
Submitted By: Dr Stefan Gödeke WhoDoesWhat?      Last update: 24/05/2007