IMIS

The checklist has been published as a data paper by Zieritz et al. (2014, https://doi.org/10.3897/neobiota.23.5665), where it can be downloaded as supplementary material. Here it is published as a standardized Darwin Core Archive and includes for each taxon: the scientific name, higher classification and stable taxon identifier (in the taxon core), the (confidence regarding the) presence of the species in each of the four countries, whether the species is native or introduced (establishment) (in the distribution extension) and coarse habitat information (in the species profile extension). Issues with the dataset can be reported at: https://github.com/trias-project/rinse-registry-checklist
We have released this dataset to the public domain under a Creative Commons Zero waiver. We would appreciate it if you follow the INBO norms for data use (https://www.inbo.be/en/norms-data-use) when using the data. If you have any questions regarding this dataset, don't hesitate to contact us via the contact information provided in the metadata or via https://twitter.com/LifeWatchINBO.
This dataset was published as open data for the TrIAS project (Tracking Invasive Alien Species http://trias-project.be, Vanderhoeven et al. 2017), with technical support provided by the Research Institute for Nature and Forest (INBO). It is selected as one of the authoritative sources for the compilation of a unified and reproducible checklist of alien species in Belgium.
Geographic coverage: The checklist covers species that are non-native in at least one of the four countries (Great Britain, France, Belgium and the Netherlands) comprising the Two Seas Programme area (https://www.interreg2seas.eu/en/content/programme-area), and includes terrestrial, marine and freshwater habitats. This region includes various geological types, ranging from Pre-Cambrian, to Carboniferous, Cretaceous and Tertiary rocks. The main river systems in the area include the Thames, Loire, Meuse and Rhine.
Taxonomic coverage: The checklist incorporates a wide variety of non-native taxa present in the Two Seas Area and aims to be non-biased towards particular countries or taxa. It includes 6.643 unique taxa, with 6.661 distribution statements per country (duplicates are the result of multiple sources for the same taxon). The checklist covers five kingdoms: Plantae (3.643), Animalia (2.698 taxa), Fungi (199 taxa), Chromista (96 taxa) and Bacteria (3 taxa) and 31 phyla. Additionally, 3 viral taxa were recorded.