Dynamic diatom response to changing climate 0–1.2 Ma at Lake El'gygytgyn, Far East Russian Arctic

Estimated species richness and Shannon diversity index (H’) for all species sampled from the seed rain seed traps during the period from January to December 2007 in the

Figure 1 - Total numerical density of organisms (A), number of springtails (B), number of mites (C), Margalef richness index (D), Simpson’s dominance index (E) and Shannon

Table 1. Community structure of Cryptostigmata mites for May 2002 at “El Nueve” farm at Santa María Huatulco, Oaxaca. of individuals m -2 ); S, species richness; H’, Shannon

Variations in mean species richness (number of species) (a), evenness (E) (b) and Shannon Diversity Index (H’) (c) of fish larvae per sampling for Xambrê Lake and Saraiva Lake sites

High percentages of Betula and Alnus characterize the late glacial and early Holocene pollen assemblages at Lake E (Fig. 2; pollen zone 1a), an assemblage that is common across

In contrast, the distribution of December–January–February averages of NINO3 val- ues is fairly close to a Gaussian, so using Pallcacocha red color record to infer changes in

Low Mn / Fe ratios and MS as well as high TOC contents dur- ing periods of facies A sedimentation (Fig. 5) clearly point to anoxia at the lake bottom with reduced organic

From 0–1.2 Ma, diatoms in the Lake El’gygytgyn sediment record vary dramatically in plankton and periphyton species assemblage and abundance. These variations cor- relate to