438709
doi
10.5281/zenodo.438709
oai:zenodo.org:438709
user-inbo
Seynaeve, Adriaan
Agency for Nature and Forest (ANB)
Vanderweeën, Marc
Vlaamse Milieumaatschappij
Beck, Olivier
Leefmilieu Brussel (BIM)
Devaere, Nathalie
Waterwegen en Zeekanaal NV afdeling Bovenschelde
Dochy, Olivier
Provincie West-Vlaanderen Dienst Milieu-, Natuur- en Waterbeleid
Van Roeyen, Koen
Provincie Oost-Vlaanderen dienst Integraal Waterbeleid
Mahieu, Filip
Provincie Oost-Vlaanderen
De Vlaeminck, Rembrandt
Provincie Antwerpen Natuur en Landschap
Veraert, Bianca
Provincie Antwerpen dienst Integraal Waterbeleid
Schelfhout, Tijl
Provincie Antwerpen dienst Integraal Waterbeleid
Gielen, Josse
Provincie Limburg dienst waterlopen
Vanreusel, Wouter
Natuurpunt Studie
Gielen, Karin
Natuurpunt Studie
Brackx, Nicolas
Vogelbescherming Vlaanderen
Pijcke, Jimmy
Vogelbescherming Vlaanderen
Standaert, Sofie
RATO vzw
Van Moer, Karel
RATO vzw
Coene, Peter
Sportvisserij Vlaanderen
Gouwy, Jan
INBO marternetwerk
Van Landuyt, Wouter
INBO florabank
Denys, Luc
INBO
Packet, Jo
INBO
Leyssen, An
INBO
Provoost, Sam
INBO
Van Gompel, Wouter
INBO
Vanderhaeghe, Floris
INBO
Paquet, Jean-Yves
Natagora
Cammaerts, Roger
Crayfish database
Boets, Pieter
Provinciaal Centrum voor Milieuonderzoek
Smooth, Augustin
Contrats de rivière de Wallonie
Darchambeau, François
Aquabio
Barbier, Yvan
Service Public de Wallonie
Branquart, Etienne
Service Public de Wallonie
Coupremanne, Maxime
Belgian Biodiversity Platform
Desmet, Peter
Research Institute for Nature and Forest (INBO)
Devisscher, Sander
Research Institute for Nature and Forest (INBO)
Van Hoey, Stijn
Research Institute for Nature and Forest (INBO)
Vanderhoeven, Sonia
Belgian Biodiversity Platform
Verreycken, Hugo
Research Institute for Nature and Forest (INBO)
Prevot, Céline
Service Public de Wallonie
Belgian baseline distribution of invasive alien species of Union concern (Regulation (EU) 1143/2014)
Adriaens, Tim
Research Institute for Nature and Forest (INBO)
info:eu-repo/semantics/openAccess
Creative Commons Zero v1.0 Universal
https://creativecommons.org/publicdomain/zero/1.0/legalcode
biodiversity
invasive alien species
biological invasions
Europe
Regulation
EASIN
Belgium
<p><strong>Aims and scope</strong></p>
<p>The European Alien Species Information Network team (EASIN, http://easin.jrc.ec.europa.eu) of the Joint Research Centre (JRC) requested the European member states on 22 June 2016 at the 6th IAS Committee to verify the baseline distribution data (2017) of invasive alien species of Union Concern (37 species) as provided by the EASIN mapping system (Katsanevakis et al. 2012). These are species with documented biodiversity impacts sensu the European Union Regulation on the prevention and management of the introduction and spread of Invasive Alien Species in Europe (IAS Regulation No 1143/2014) (European Union 2014). The purpose of this baseline was to set a representative geographic account of the current distribution of these species at (i) country and (ii) 10km<sup>2</sup> grid level and to get feedback from the member states on this. This distribution provides the baseline for subsequent reporting by the member states as required by the IAS Regulation.</p>
<p>The dataset provides a shapefile on the baseline distribution of the invasive species of EU concern in Belgium based on an aggregated dataset (<em>ias_belgium_t0_2016</em>). Data were compiled from various datasets holding invasive species observations such as data from research institutes and research projects (76%), citizen science observatories (23%) and a range of other sources (1%) such as governmental agencies, water managers, invasive species control companies, angling and hunting organizations etc. Data were normalized using a custom mapping of the original data files to Darwin Core (Wieczorek et al. 2012) where possible. Species names were mapped to the GBIF Backbone Taxonomy (GBIF 2016) using the species API (http://www.gbif.org/developer/species). Appropriate selection of records for <em>ias_belgium_t0_2016</em> was performed based on predefined cut-off dates and record content validation (see further). Data were then joined with GRID10k layer Belgium based on GRID10k cellcodes (ETRS_1989_LAEA).</p>
<p><strong>File description</strong></p>
<p>The dataset (<em>ias_belgium_t0_2016.zip</em>) contains two types of data:</p>
<ol>
<li>
<p>A shapefile (<em>ias_belgium_t0_2016.shp</em>) providing the presence of the species of EU concern at 10km<sup>2</sup> (European Terrestrial Reference System projection - 1989 ETRS_1989_LAEA) level. The attributes table field “ACCEPTED” provides coded information on the distribution validation: correct squares (Y) represent data overlapping between the collated <em>ias_belgium_t0_2016</em> data and the EASIN maps. Incorrect data (N) can represent records mapped on wrong 10km2 squares or records that fall outside of the date range applied for <em>ias_belgium_t0_2016</em>. New squares (New) represent previously unpublished data that are currently absent from EASIN. The work was supervised and validated by the Belgian national scientific council on invasive alien species, an official consultative structure coordinating scientific input and data aggregation between Belgian regions and institutions with regards to technical implementation of the Regulation No 1143/2014 on invasive alien species.</p>
</li>
<li>
<p>A geojson version of the same shapefile (<em>ias_belgium_t0_2016.geojson</em>), converted to WGS84 projection.</p>
</li>
</ol>
<p><strong>Date range</strong></p>
<p>The baseline distribution should reflect the current status and situation of the IAS of Union concern in each member state. No specific time period was set by EASIN, but most frequently, historical records were not taken into consideration for the baseline. For<em> ias_belgium_t0_2016</em> the choice of cut-off date was based on an analysis of the relative contribution of a year in defining the total distribution of the species at 1km<sup>2</sup> grid level (calculated as [the sum of unique UTM 1km<sup>2</sup> grid squares year-1/total number of unique UTM 1km<sup>2</sup> grid squares for that species]) based on the complete dataset.</p>
<p>The dataset comprises invasive species observations between January 2000 (2000-01-01) and February 2016 (2016-01-31) and includes both casual data as well as established populations. It also comprises data from eradicated populations in that period.</p>
<p><strong>Validation procedure</strong></p>
<p>Record validation was performed to exclude dubious records, wrong identifications etc. This was done based on the IdentificationVerificationStatus field (to which validation information from original data were mapped) if available. In general, non-validated data were not considered for ias_belgium_t0_2016. Data were validated in the original datasets based on evidence (e.g. pictures), on the observer’s experience, or based on a set of predefined rules (e.g. automated validation based on geographic filtering). Data from research institutes were generally considered validated. A few casual records of EU list species that were clearly planted were discarded manually. When the original dataset did not mention any validation status, records were not considered validated and therefore not taken into account for ias_belgium_t0_2016, unless for Chinese mitten crab <em>Eriocheir sinensis</em>, ruddy duck <em>Oxyura jamaicensis</em>, raccoon <em>Procyon lotor</em>, Siberian ground squirrel <em>Tamias sibiricus</em>, sacred ibis <em>Threskiornis aethiopicus</em>, and red-eared slider <em>Trachemys scripta</em>. For these species, we assumed all records were correct as they originate from dedicated sampling (<em>E. sinensis</em>) within research projects or represent species that are readily recognizable by people in the field.</p>
<p>A visual check was performed on the resulting distribution maps by representatives in the national IAS scientific council. Data in the distribution maps provided by EASIN but not present in ias_belgium_t0_2016 were carefully checked and kept/rejected accordingly.</p>
<p><strong>Data providers</strong></p>
<p>The providers of the invasive species data for this exercise (individuals and their respective organizations) are listed in the "data providers" section of the dataset metadata. Much of the primary occurrence data that formed the basis for this aggregated dataset will be published as open data on the Global Biodiversity Information Facility (GBIF) within the framework of the Tracking Invasive Alien Species project (TrIAS, https://osf.io/7dpgr/, 2017-2020).</p>
Zenodo
2017-03-28
info:eu-repo/semantics/other
793988
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