Data from: Effect of habitat quality and quantity on the occurrence of the lesser spotted woodpecker (Dryobates minor) during two time periods
Data files
May 27, 2026 version files 158.72 KB
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LSW_dataset.gpkg
155.65 KB
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README.md
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Abstract
This repository contains one GeoPackage file with spatial information about the surveyed sites, woodpecker presence or absence in the two study periods (1985 – 1988 and 2019 – 2021), coverage of common deciduous and nemoral deciduous, and mixed forest, and coverage of protected areas in the study sites in 2021.
Dataset DOI: 10.5061/dryad.k3j9kd5mp
Description of the data and file structure
This data is part of the data used for Olsson & Kost (2025) Effect of habitat quality and quantity on the occurrence of the lesser spotted woodpecker (Dryobates minor) during two time periods. Biological Conservation.
The dataset consists of a single GeoPackage file (LSW_dataset.gpkg) with information about the lesser spotted woodpecker presence and absence in the 228 survey sites during the two study periods (1985 – 1988 and 2019 – 2021) and the main habitat variables. Survey sites are 200 ha squares (1.141 x 1.414 km), rotated to locally maximize deciduous habitats. Habitat variables are coverages from the Swedish national landcover database (NMD, https://www.naturvardsverket.se/en/services-and-permits/maps-and-map-services/national-land-cover-database/) and coverage of protected areas in the survey sites.
Files and variables
File: LSW_dataset.gpkg
Description: LSW_dataset.gpkg file structure: 7 variables + geometry, 228 rows
Variables:
Site_ID, charcters. Name of survey site.
LSW.1985_1988, numeric. 0 or 1 for absence and presence, respectively, in the first survey perdod. NA/NULL indicate sites that were not surveyed in the period.
LSW.2019_2021, numeric. 0 or 1 for absence and presence, respectively, in the second survey perdod. NA/NULL indicate sites that were not surveyed in the period.
NMD.common_deciduous, numeric. Number of hectares within sites dominated by birch (Betula pendula, B. pubescens), aspen (Populus tremula), sallow (Salix caprea), rowan (Sorbus aucuparia), Swedish whitebeam (Sorbus intermedia), alder (Alnus glutinosa, A. incana), hazel (Corylus avellana), according to NMD.
NMD.nemoral_deciduous, numeric. Number of hectares within sites dominated by oak (Quercus robur, Q. petrea), beech (Fagus sylvatica), hornbeam (Carpinus betulus), linden (Tilia cordata), elm (Ulmus glabra), ash (Fraxinus excelsior), maple (Acer platanoides, A. pseudoplatanus), cherry (Prunus avium), apple (Malus sp.), according to NMD.
NMD.mixed, numeric. Number of hectares covered by a mix of any deciduous (see classes above) and any coniferous tree species (Norway spruce, Picea abies; Scots pine, Pinus sylvestris), where neither group makes up more than 75 % of the stems, according to NMD.
Protected_area, numeric. Number of hectares within sites protected as nature reserves or national parks.
geom, multipolygons. Geometries for the polygons of square survey sites. Coordinates are given in the projected coordinate reference system SWEREF99 TM (EPSG:3006). Units are meters.
Code/software
The dataset can be opened in e.g. QGIS or read in R using the st_read function from the sf package.