Modelling the effect of climate change on recovery of acidified freshwaters: Relative sensitivity of individual processes in the MAGIC model

The MAGIC model was used to evaluate the relative sensitivity of several possible climate-induced effects on the recovery of soil and surface water from acidification. A common protocol was used at 14 intensively studied sites in Europe and eastern North America. The results show that several of the...

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Bibliographic Details
Published in:The Science of the total environment 2006-07, Vol.365 (1), p.154-166
Main Authors: Wright, R.F., Aherne, J., Bishop, K., Camarero, L., Cosby, B.J., Erlandsson, M., Evans, C.D., Forsius, M., Hardekopf, D.W., Helliwell, R., Hruška, J., Jenkins, A., Kopáček, J., Moldan, F., Posch, M., Rogora, M.
Format: Article
Language:English
Subjects:
Acid deposition
Acidification
Climate
Climate change
Ecosystem
Europe
Forestry
Freshwater
Freshwaters
Geography
Geologic Sediments - analysis
Geologic Sediments - chemistry
Hydrogen-Ion Concentration
Models, Biological
Nitrogen - analysis
Nitrogen - metabolism
North America
Organic Chemicals - analysis
Organic Chemicals - metabolism
Sodium Chloride - analysis
Soil Pollutants - analysis
Time Factors
Water Movements
Water Pollutants - analysis
Water Supply - analysis
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Summary:The MAGIC model was used to evaluate the relative sensitivity of several possible climate-induced effects on the recovery of soil and surface water from acidification. A common protocol was used at 14 intensively studied sites in Europe and eastern North America. The results show that several of the factors are of only minor importance (increase in pCO 2 in soil air and runoff, for example), several are important at only a few sites (seasalts at near-coastal sites, for example) and several are important at nearly all sites (increased concentrations of organic acids in soil solution and runoff, for example). In addition changes in forest growth and decomposition of soil organic matter are important at forested sites and sites at risk of nitrogen saturation. The trials suggest that in future modelling of recovery from acidification should take into account possible concurrent climate changes and focus specially on the climate-induced changes in organic acids and nitrogen retention.
ISSN:0048-9697
1879-1026
DOI:10.1016/j.scitotenv.2006.02.042