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Dataset information Kola penninsula pH dataset EDDI dataset code Kola Dataset type pH Number of samples 25 Collection date 1995 Contributor Nadia Solovieva Contact Nadia Solovieva The Kola diatom-pH training set comprises 24 small oligotrophic lakes located along a vegetation gradient in the central and western parts of the Kola Peninsula, Russia. The surface sediment diatom flora from the KOLA lakes is typical for oligotrophic, diluted arctic and alpine lakes. The diatom assemblages from the KOLA lakes are close floristically to the assemblages from the ALPE lakes (Cameron et al., 1999) and to the assemblages from northern Sweden (Korsman and Birks, 1996). The diatom optima generated by the KOLA model are generally in agreement with the optima derived by other models (e.g. ALPE) although KOLA diatom optima are generally higher compared to the ALPE and SWAP. Full taxon list for this dataset. Full sample list for this dataset. Plot a map of this dataset. Summary of environmental data for this dataset: Variable Units N Min Max Mean Alkalinity 畫q/l 25 0 283 72.8 Aluminium (labile) 痢/l 25 0.1 46.8 11.4 Aluminium (monomeric) 痢/l 25 0.1 92.9 28.3 Calcium 畫q/l 25 15 209 70 Chloride 畫q/l 25 17.5 617 147 Colour mg Pt/l 25 3 240 63.4 Conductivity 猶/cm 25 8 88 32.7 Iron 痢/l 25 1.8 320 72.4 Magnesium 畫q/l 25 11.5 115 61 Maximum depth of lake m 25 1.5 19.2 6.51 pH pH units 25 5 7.44 6.35 Potassium 畫q/l 25 1.02 29.9 10.1 Silica mg/l 25 0.04 2.91 0.946 Sodium 畫q/l 25 19.1 491 153 Sulphate 畫q/l 25 22.1 104 51.7 Total nitrogen 痢/l 25 94 470 226 Total organic carbon mg/l 25 0.73 20.2 6.6 Total phosphorus 痢/l 25 2 17 7.44 Water depth of diatom sample m 25 1.5 19.2 6.51 Publications for this dataset: Solovieva, N (2000) A palaeoecological study of Holocene envionmental change in a small upland lake from the Kola peninsula, Russia. Unpublished PhD Thesis, University of London.