Arachnids (Aranei, Opiliones) from grass stand and forest litter in the Urals, Russia

The dataset presents the results of a long-term monitoring program for arachnids (Aranei and Opiliones) that inhabit meadow grass stand and forest litter in the Central and Southern Urals. The monitoring was carried out using permanent plots located in spruce-fir and aspen-birch forests and secondary dry meadows. All represented data were sampled in industrially undisturbed areas and could be used as a local reference. The dataset describes the quantitative and qualitative structure of arachnids, age-sex composition, seasonal and inter-annual dynamics. Arachnids were sampled with three general schemes: inhabitants of grass stand were collected using biocenometer (3 sampling plots (=locationID) in total), inhabitants of forest litter were collected using line-designed (8 plots) and matrix-designed pitfall trapping (1 plot). The dataset includes 1351 samples (=sampling events), which corresponded to 5462 occurrences (identifications mainly to species) identifie during 2004–2009, 2013 and 2018. Only samples that contained arachnids (occurrenceStatus=present) have been provided.