HiDaFernPT: Historical data of spore availability for 121 fern and lycopod taxa in Portugal (1926 – 2013)

Study Extent

Sampling

Quality Control

Method steps

1. Taxonomic harmonization: - initial verification by botanist from the Herbarium of the University of Coimbra, to check small typos and authorities misspellings; - harmonization through the Global Name Resolver using function gnr_resolve from the R (R Core Team 2023) package taxixe 0.9.9 (Chamberlain & Szöcs 2013, Chamberlain et al. 2020), against the Global Biodiversity Information Facility - GBIF backbone, accessed on 2023-03-01; - species classification as native or introduced to Portugal based on the World Checklist of Vascular Plants - WCVP (Govaerts et al. 2021), using function wcvp_distribution from the R package rWCVP (Brown et al. 2023), accessed on 2023-06-28. The data set includes the original name, and the harmonized taxonomy based on GBIF and WCVP. Georeferencing protocol: - original record of collection localities clustered based on textual description using OpenRefine, followed by manual inspection; - locations georeferenced with point-radius georeferencing method (Chapman & Wieczorek 2020, Zermoglio et al. 2020), with geographic coordinates, and corresponding confidence intervals, obtained with Maps.ie (Maps.ie 2023), and uncertainty obtained with Georeferencing Calculator (Bloom et al. 2020; Wieczorek et al. 2021); - administrative levels obatined with Google Geocoding API through the Reverse Geocoding Service (Google 2022); - elevation retrieved with Google Elevation API.

1. Plantae
   rank: kingdom
2. Tracheophyta
   rank: phylum
3. Lycopodiopsida
   rank: class
4. Polypodiopsida
   rank: class