Mapping butterfly species richness and abundance in mountain grasslands – spatial application of a biodiversity indicator

<p dir="ltr">This dataset contains data related to the article "Mapping Butterfly Species Richness and Abundance in Mountain Grasslands—Spatial Application of a Biodiversity Indicator" (<a href="https://doi.org/10.1111/ddi.70000" target="_blank">https://doi.org/10.1111/ddi.70000</a>). It contains a table with the following information for each survey site: coordinates, environmental variables, butterfly species richness and abundance. Another table contains information on the weighted means of the Landolt indicators for moisture and nutrients at the survey sites. These indicators were derived from field measurements at the sites. Both tables can be matched over the site names.</p><p dir="ltr">The dataset also contains raster files (.tif) with predictions for butterfly species richness and abundance in the study region (Western Austria). (enet: predictions from models with elastic net regularization; step: predictions from models with step-wise variable selection)</p><p dir="ltr">The environmental variables in the first table are:</p><p dir="ltr">Altitude: altitude above sea level</p><p dir="ltr">D2n: Distance to Nature (an indicator from Rüdisser et al. 2012)</p><p dir="ltr">Eco: density of the borders of forests and small woody features (ecotone) in km per km¹ in the surrounding landscape</p><p dir="ltr">Forest: proportion of forest in the surrounding landscape</p><p dir="ltr">Grass: proportion of grassland in the surrounding landscape</p><p dir="ltr">Imper: proportion of imperviousness (sealed areas) in the surrounding landscape</p><p dir="ltr">Natura2000: weather or not a site is located in a Natura 2000 area</p><p dir="ltr">Northness: exposition of a site, expressed as northness</p><p dir="ltr">Slope_per: Slope of a site in percent</p><p dir="ltr">Tjahr: mean yearly temperature</p><p dir="ltr">Tjan: mean temperature in January</p><p dir="ltr">Tjul: mean temperature in July</p><p dir="ltr">Tprod: Mean total productivity of grassland habitats</p><p dir="ltr">Max_prod: mean maximum productivity of grassland habitats</p><p dir="ltr">NDMI: Normalized Difference Moisture index of grassland habitats</p><p dir="ltr">NDVI: Normalized Difference Vegetation Index of grassland habitats</p><p dir="ltr">Sd_tprod: standard deviation of the total productivity of grassland habitats</p><p dir="ltr">Sd_max_prod: standard deviation of the maximum productivity of grassland habitats</p><p dir="ltr">Sd_NDMI: standard deviation of the NDMI</p><p dir="ltr">Sd_NDVI: Standard deviation of the NDVI</p><p dir="ltr">A radius in m is included in the variable name for variables that were calculated in different radii around the centre of a site.</p>