Mapping butterfly species richness and abundance in mountain grasslands – spatial application of a biodiversity indicator
This dataset contains data related to the article "Mapping Butterfly Species Richness and Abundance in Mountain Grasslands—Spatial Application of a Biodiversity Indicator" (https://doi.org/10.1111/ddi.70000). 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.
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)
The environmental variables in the first table are:
Altitude: altitude above sea level
D2n: Distance to Nature (an indicator from Rüdisser et al. 2012)
Eco: density of the borders of forests and small woody features (ecotone) in km per km1 in the surrounding landscape
Forest: proportion of forest in the surrounding landscape
Grass: proportion of grassland in the surrounding landscape
Imper: proportion of imperviousness (sealed areas) in the surrounding landscape
Natura2000: weather or not a site is located in a Natura 2000 area
Northness: exposition of a site, expressed as northness
Slope_per: Slope of a site in percent
Tjahr: mean yearly temperature
Tjan: mean temperature in January
Tjul: mean temperature in July
Tprod: Mean total productivity of grassland habitats
Max_prod: mean maximum productivity of grassland habitats
NDMI: Normalized Difference Moisture index of grassland habitats
NDVI: Normalized Difference Vegetation Index of grassland habitats
Sd_tprod: standard deviation of the total productivity of grassland habitats
Sd_max_prod: standard deviation of the maximum productivity of grassland habitats
Sd_NDMI: standard deviation of the NDMI
Sd_NDVI: Standard deviation of the NDVI
A radius in m is included in the variable name for variables that were calculated in different radii around the centre of a site.
