Regionalisation of chemical variability in European mountain lakes

摘要: SUMMARY 1. We carried out a coordinated survey of mountain lakes covering the main ranges across Europe (including Greenland), sampling 379 above local tree line in 2000. The objectives were to identify sources chemical variability lakes, define classification and develop tools extrapolate our results regional lake populations through an empirical regionalisation or upscaling properties. 2. investigated causes using factor analysis (FA) relationships between chemistry several environmental variables. Weathering, sea salt inputs, atmospheric deposition N S, biological activity soils catchment identified as major drivers chemistry. 3. tested discriminant (DA) predict It was possible use lithology catchments range Ca 2+ SO4 2) into which unknown will decrease. Lakes with lower concentrations have little geologically derived better reflect variations S loading. influence marine aerosols on lakewater could also be predicted from minimum distance altitude lakes. 4. most remarkable result FA reveal correlated DOC (positively) NO3 ) (negatively). This inverse relationship might either independent processes active acting opposite sense, direct interaction, e.g. limitation denitrification by availability. Such has