﻿Title: Analysis of gaps in rapeseed (Brassica napus L.) collections in European genebanks

Authors: Stephan Weise, Roel Hoekstra, Kim Jana Kutschan, Markus Oppermann, Rob van Treuren and Ulrike Lohwasser

Species distribution modelling (or ecological niche modelling) was used to predict the effects of climate change on the future distribution of the wild relatives of Brassica napus L. in Europe and countries bordering the Mediterranean Sea. Modelling procedures followed the methods described by Aguirre-Gutierrez et al. 2017 (10.1111/ddi.12573) and van Treuren et al. 2017+2020 (10.1016/j.biocon.2017.10.003; 10.1016/j.gecco.2020.e01054).

The file "Brassica modelling results.pdf" summarises the results of the modelling.

Columns:
Taxon: The species used for modelling
Download date GBIF: Date of download of the occurrence data set from GBIF
Number of records: Number of available records
Number of used records: Number of records used after cleansing
Current range size: Current distribution area given in numbers of cells (~4x4 km)
Range RCP2.6 with migration: Distribution area assuming RCP 2.6 (optimistic scenario) with migration
% Change: Range change in percentage
Range RCP8.5 with migration: Distribution area assuming RCP 8.5 (pessimistic scenario) with migration
% Change: Range change in percentage
Range RCP2.6 no migration: Distribution area assuming RCP 2.6 (optimistic scenario) without migration
% Change: Range change in percentage
Range RCP8.5 no migration: Distribution area assuming RCP 8.5 (pessimistic scenario) without migration
% Change: Range change in percentage

The file "Not used for modelling.pdf" lists those species of the rapeseed gene pool that could not be used for modelling due to insufficient occurrence data.

The subfolders labelled with the respective species names contain the results of the modelling carried out, both for RCP 2.6 and for RCP 8.5. The R programming language was used for distribution modelling with the Biomod2 package (10.1111/j.1600-0587.2008.05742.x). For the modelling, geographic occurrence data of these species were downloaded from the Global Biodiversity Information Facility (GBIF) using the Darwin Core Standard (Wieczorek et al. 2019; 10.1371/journal.pone.0029715). The occurrence data is contained in the subfolders labelled SpeciesData.
