Kienel: Late Weichselian to Holocene Diatom Succession in a Sediment Core
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Figure 9: Relative abundances of diatoms in pH-preference groups (Hustedt. 1937-39) in relation to local diatom
assemblage zones (DAZ and chronozones according to Khotinsky (1984) and Mangerud et al. (1974) - Lama Lake
PG IIII (NE Norilsk. W Siberia).
parameter. Such non-planktonic species as Cymbella spp., small Achnanthes spp., and
Achnanthes minutissima var. minutissima became abundant. The non-planktonic diatom
assemblages were similar to those recorded from Preboreal times (DAZ-2). Even diatom
concentration showed similarly low values.