Fig. 3
From: Effects of climate change and industrialization on Lake Bolshoe Toko, eastern Siberia
Diatom assemblage changes in short sediment cores from Lake Bolshoe Toko. The red shaded area indicates the period of global industrialization starting in the mid-nineteenth century, as determined by 210Pb and 137Cs dating. The blue area indicates samples used to represent pre-industrial values. Species occurrence is given as relative abundance (%, scales vary to show rare taxa) and species richness as rarefied number of taxa. Planktonic/benthic ratio, Mallomonas index, and local contribution to beta diversity (LCBD) are also shown