Registry of introduced terrestrial molluscs in Belgium

<p><strong>Introduction</strong></p> <p>The Registry of introduced terrestrial molluscs in Belgium is a species checklist dataset maintained by Thierry Backeljau at the Royal Belgian Institute for Natural Sciences (RBINS). It contains information on all (29) non-native terrestrial molluscs occurring in the wild in Belgium since 1800. The list was originally compiled for EASIN (<a href="https://easin.jrc.ec.europa.eu/easin">https://easin.jrc.ec.europa.eu/easin</a>) and is based on a literature survey and information from RBINS. The dataset can be used for researching and managing terrestrial alien molluscs or compiling regional and national registries of alien species.</p> <p>The registry is maintained as a Google Spreadsheet and exported and uploaded here as an Excel file and csv files for each sheet. The dataset is also published for the TrIAS project (Tracking Invasive Alien Species <a href="http://trias-project.be">http://trias-project.be</a>, Vanderhoeven et al. 2017) as a standardized Darwin Core Archive, openly available on GBIF (<a href="https://doi.org/10.15468/t13kwo">https://doi.org/10.15468/t13kwo</a>).</p> <p>Issues with the dataset can be reported at <a href="https://github.com/trias-project/alien-mollusca-checklist">https://github.com/trias-project/alien-mollusca-checklist</a></p> <p><strong>Files</strong></p> <ul> <li> <p><strong>alien_mollusca_checklist.xlsx</strong>: Excel export of the Google Spreadsheet in which the data are maintained.</p> </li> <li> <p><strong>metadata.csv</strong>: definitions for the fields in <code>taxa.csv</code>, <code>references.csv</code>, <code>synonyms.csv</code> and <code>vernacular_names.csv</code>, with information about the content, the number of values allowed, the necessity of a controlled vocabulary and whether or not the information is obligatory.</p> </li> <li> <p><strong>taxa.csv</strong>: scientific names and higher classification, as well as the species&rsquo; presence or absence in Belgium, its first and last observation date, native range, introduction pathway and degree of establishment.</p> </li> <li> <p><strong>references.csv</strong>: all references used to compile the dataset.</p> </li> <li> <p><strong>synonyms.csv</strong>: synonyms for the scientific names in <code>taxa.csv</code>.</p> </li> <li> <p><strong>vernacular_names.csv</strong>: Dutch, French, English and German vernacular names for the scientific names in <code>taxa.csv</code>.</p> </li> </ul>