Wagner et al. 2016. R scripts and data

Data and R scripts analyze how species shifts in soil pH niche parameter (optimum, width) are linked to regional changes in mean precipitation, substrate availability and species traits indicative of competitive ability.<br><br>Requirement: R (https://www.r-project.org/) and R packages (see scripts for further specifications)<br><br>Data structure is explained in the R scripts.<br

Plot data from the paper "A modern analogue of the Pleistocene steppe-tundra ecosystem in southern Siberia" (Chytry et al.)

Primary data from 182 plots of 10 m x 10 m sampled in 12 habitat types of the steppe-tundra landscape in the SE Russian Altai Mountains in summers of 2005, 2006 and 2011. The dataset contains species composition of vascular plants, bryophytes, lichens and snails, and environmental data from the same plots including measurements of primary aboveground productivity, nutrient contents in the aboveground biomass and soil chemistry.<div><br></div><div>Sampling methods are described in the paper Chytrý et al.: A modern analogue of the Pleistocene steppe-tundra ecosystem in southern Siberia.</div><div><br></div><div>The dataset is provided in two files, one in the XLSX format for Excel 2013, another in tab-delimited table in the TXT format.</div><div><br></div><div>Plant species data were originally recorded with covers on the nine-degree Braun-Blanquet scale, which has been transformed to percentages as follows: 1, 2, 3, 4, 8, 18, 38, 63, 88. Other values can occur in case when original records of the same species in different layers were merged for the analyses. Snail data indicate species presence (1) or absence (0). NA means absence of measurement in the plot.</div><div><br></div><div><br></div