Inventory of the terrestrial isopods in Belgium (2011-2020)

Última versión Publicado por Natuurpunt en Apr 20, 2021 Natuurpunt

Inventory of the terrestrial isopods in Belgium (2011-2020) is an occurrence dataset published by Spinicornis (Terrestrial Isopod Research Group of Belgium), the Research Institute of Nature and Forest (INBO) & Natuurpunt Studie. The dataset represents the most complete overview of terrestrial isopods in Belgium and includes occurrences of 35 species, observed between 2011 and 2020. There are 36 native terrestrial isopod species in Belgium (De Smedt et al. 2018) and only one (i.e. Miktoniscus patiencei Vandel, 1946) hasn’t been detected in Belgium between 2011 and 2020. The occurrences originate from field surveys, pitfall trap projects and casual observations. The recorded data are registered through the citizen science portals and, managed by Natuurpunt Studie and Natagora respectively. All data were verified by experts. Here, the dataset is published as a standardized Darwin Core Archive and includes for each record an occurrenceID, reference, date, location and scientific name and if available also individual count, sex, lifestage, behavior, sampling protocol and information on the identification.

Generalized and/or withheld information: location information is generalized to 5 x 5 km² Universal Transverse Mercator (UTM) grid cells. Observer name, exact XY-coordinates, toponyms, and photographs are not included in the published dataset, but are known in the source database.

To allow anyone to use this dataset, we have released the data to the public domain under a Creative Commons Zero waiver ( We would appreciate however, if you read and follow these norms for data use ( and provide a link to the original dataset ( whenever possible. If you use these data for a scientific paper, please cite the dataset following the applicable citation norms and/or consider us for co-authorship. We are always interested to provide more information and available for help with analysing the data for your project, so please contact us via the contact information provided in the metadata or via


Los datos en este registros biológicos recurso han sido publicados como Archivo Darwin Core(DwC-A), el cual es un formato estándar para compartir datos de biodiversidad como un conjunto de una o más tablas de datos. La tabla de datos del core contiene 19,438 registros.

Este IPT archiva los datos, sirviendo así como repositorio de datos. Los datos y metadatos están disponibles para descargar en la sección de descargas. La tabla de versiones muestra otras versiones del recurso que se han hecho accesibles al público y permite el seguimiento de los cambios hechos al recurso en el tiempo.


Descargue la última versión de los datos como un Archivo Darwin Core (DwC-A) o los metadatos como EML o RTF:

Datos como un archivo DwC-A descargar 19,406 registros en Inglés (665 KB) - Frecuencia de actualización: no planeado
Metadatos como un archivo EML descargar en Inglés (31 KB)
Metadatos como un archivo RTF descargar en Inglés (20 KB)


La siguiente tabla muestra sólo las versiones publicadas del recurso que son de acceso público.

¿Cómo referenciar?

Los usuarios deben citar este trabajo de la siguiente manera:

Boeraeve P, De Smedt P, Segers S, Arijs G, Lambrechts J, Gielen K, Swinnen K, Desmet P, Brosens D (2021): Inventory of the terrestrial isopods in Belgium (2011-2020). v1.10. Natuurpunt. Dataset/Occurrence.


Los usuarios deben respetar los siguientes derechos de uso:

El publicador y propietario de los derechos de este trabajo es Natuurpunt. To the extent possible under law, the publisher has waived all rights to these data and has dedicated them to the Public Domain (CC0 1.0). Users may copy, modify, distribute and use the work, including for commercial purposes, without restriction.

Registro GBIF

Este recurso ha sido registrado en GBIF con el siguiente UUID: b6412a28-329c-4a24-b605-bc9d1b43b5b2.  Natuurpunt publica este recurso, y está registrado en GBIF como un publicador de datos avalado por Belgian Biodiversity Platform.

Palabras Clave

Occurrence; Observation; detritivores; distribution; habitat; inventory; Isopoda; Oniscidea; woodlice; Occurrence


¿Quién creó el recurso?:

Pepijn Boeraeve
Spinicornis (Terrestrial Isopod Group of Belgium) BE
Pallieter De Smedt
Spinicornis (Terrestrial Isopod Group of Belgium) BE
Stijn Segers
Spinicornis (Terrestrial Isopod Group of Belgium) BE
Gert Arijs
Spinicornis (Terrestrial Isopod Group of Belgium) BE
Jorg Lambrechts
Natuurpunt Studie BE
Karin Gielen
Natuurpunt Studie BE
Peter Desmet
Research Institute for Nature and Forest (INBO) BE
Dimitri Brosens
Research Institute for Nature and Forest (INBO) / Belgian Biodiversity Platform BE

¿Quién puede resolver dudas acerca del recurso?:

Pepijn Boeraeve
Spinicornis (Terrestrial Isopod Group of Belgium) BE
Pallieter De Smedt
Spinicornis (Terrestrial Isopod Group of Belgium) BE

¿Quién documentó los metadatos?:

Pepijn Boeraeve
Spinicornis (Terrestrial Isopod Group of Belgium) BE
Pallieter De Smedt
Spinicornis (Terrestrial Isopod Group of Belgium) BE
Dimitri Brosens
Research Institute for Nature and Forest (INBO) / Belgian Biodiversity Platform BE
Peter Desmet
Research Institute for Nature and Forest (INBO) BE

Cobertura Geográfica

Belgium is a small country (ca. 30.500 km²) in Western Europe. It has a short shoreline (approx. 65 km) along the North Sea. The country is part of two European biogeographical regions, namely the Atlantic and the Continental region. The Atlantic region is largely covered by agricultural land and urban areas. The Continental region is less covered by agricultural land and urban areas and is instead more forested. Despite its small size, Belgium has a rich geology going from a flat Atlantic region in the west consisting of Holocene and Pleistocene deposits to a Continental hilly landscape with Mesozoic and Pleistocene deposits in the east and the south. The Atlantic region has clay loam and heavy clay soils in the northwest, and loam and sandy loam soils in the middle with a relatively high terrestrial isopod diversity. On the sandy soils in the northeast of the Atlantic region, terrestrial isopod diversity is rather low. The Continental region contains two bands of soils with calcareous outcrops, with a high species richness of terrestrial isopods. In between these chalky soil bands and in the east of the country, the land is covered by slate and sandstone soils, some with large areas of peatlands, which are more species poor.

Coordenadas límite Latitud Mínima Longitud Mínima [49.49, 2.53], Latitud Máxima Longitud Máxima [51.51, 6.42]

Cobertura Taxonómica

The dataset covers data from 35 native species of terrestrial isopods (Order Isopoda, Suborder Oniscidea) found in Belgium between 2011 and 2020. Also included are records for 3 multispecies for which identification was not possible based on photographs or for samples lacking males.

Reino  Animalia (animals)
Filo  Arthropoda
Subfilo  Crustacea
Class  Malacostraca
Orden  Isopoda (isopods)
Suborden  Oniscidea
Familia  Ligiidae,  Trichoniscidae,  Styloniscidae,  Oniscidae,  Philosciidae,  Platyarthrus,  Armadillidiidae,  Armadiliidae,  Cylisticidae,  Porcellionidae,  Trachelipodidae
Especie  Androniscus dentiger,  Armadillidium album,  Armadillidium nasatum,  Armadillidium opacum,  Armadillidium pictum,  Armadillidium pulchellum,  Armadillidium vulgare,  Cylisticus convexus,  Eluma caelata,  Haplophthalmus danicus,  Haplophthalmus mengii,  Haplophthalmus montivagus,  Hyloniscus riparius,  Ligia oceanica,  Ligidium hypnorum,  Metatrichoniscoides leydigii,  Oniscus asellus,  Philoscia affinis,  Philoscia muscorum,  Platyarthrus hoffmannseggii,  Porcellio dilatatus,  Porcellio laevis,  Porcellio monticola,  Porcellio scaber,  Porcellio spinicornis,  Porcellionides pruinosus,  Porcellium conspersum,  Trachelipus rathkii,  Trichoniscoides albidus,  Trichoniscoides helveticus,  Trichoniscoides sarsi,  Trichoniscus alemannicus,  Trichoniscus provisorius,  Trichoniscus pusillus,  Trichoniscus pygmaeus
Unranked  Haplophthalmus danicus/mengii/montivagus,  Trichoniscus pusillus/provisorius/alemannicus,  Trichoniscoides sarsi/helveticus

Cobertura Temporal

Fecha Inicial / Fecha Final 2011-01-01 / 2020-12-31

Métodos de Muestreo

In every Belgian UTM 10km square, three different habitats (if present) were checked for terrestrial isopods: a deciduous forest, a river or stream side and an anthropogenic habitat (garden, park, graveyard, etc.). Disused stone quarries or coastal habitats were also visited if present. The vast majority of the observations originate from field observations where terrestrial isopods were collected by hand or photographed. A minority comes from pitfall traps or other trap types (e.g. sugar bait traps). The project of Spinicornis was finished at the beginning of 2020 and resulted in an ecological atlas of the terrestrial isopods of Belgium (De Smedt et al. 2020). The majority of the data are presence-only data (absence data are not included in this dataset).

Área de Estudio Inventory of the terrestrial isopods in Belgium (2011-2020) is an initiative of Spinicornis (Terrestrial Isopod Research Group of Belgium) with cooperation of the Research Institute of Nature and Forest (INBO) & Natuurpunt Studie. The project started in 2014 and stated as goal to survey every 10km X 10km square of the UTM (Universal Transverse Mercator Projection) grid in Belgium. The observations made within this project are complemented with citizen science data (point data) from the nature observation websites and from 2011 until 2020. All observations were validated based on pictures by the members of Spinicornis. Additional data was collected by identifying specimens from multiple surveys between 2011 and 2020 where pitfall traps or other trap types had been used.
Control de Calidad Records were collected by both terrestrial isopod experts and volunteers. Observations by volunteers were only included in the database after being validated by experts of Spinicornis based on photographs of their observations.

Descripción de la metodología paso a paso:

  1. Spinicornis members sampled different habitats in all squares of the UTM 10 x 10 km² grid in Belgium and entered the observations in / These portals are managed by Natuurpunt Studie and Natagora respectively, but use the same underlying database system.
  2. Spinicornis members identified specimens observed and collected. The data records were subsequently imported in the database.
  3. Spinicornis also validated observations entered by volunteers in and between 2011 and 2020.
  4. A custom SQL view is created in the database to map the original data to Darwin Core as an occurrence core.
  5. A delimited file was created and exported from the waarnemingen database.
  6. The generated Darwin Core file was imported in the INBO IPT and documented with metadata.
  7. The dataset is published and registered with GBIF.

Referencias Bibliográficas

  1. Boeraeve P., Arijs G., Segers S., De Smedt P. (2021) Habitat and seasonal activity patterns of the terrestrial isopods of Belgium (Isopoda: Oniscidea). Belgian Journal of Entomology (in press)
  2. De Smedt P., Arijs G., Segers S., Boeraeve P. (2017) Woodlice of the green houses at Ghent Botanical Garden and Botanic Garden Meise with two new exotic species for Belgium (Isopoda: Oniscidae). Bulletin de la Société royale belge d’Entomologie/Bulletin van de Koninklijke Belgische Vereniging voor Entomologie 153: 109-112
  3. De Smedt P, Boeraeve P, Arijs G, Segers S (2018) Woodlice of Belgium: an annotated checklist and bibliography (Isopoda, Oniscidea). In: Hornung E, Taiti S, Szlavecz K (Eds) Isopods in a Changing World. ZooKeys 801: 265–304
  4. De Smedt P., Boeraeve P., Arijs G., Segers S. (2020) De landpissebedden van België (Isopoda: Oniscidea). Spinicornis, Bonheiden, Belgium, 148pp.

Metadatos Adicionales

Identificadores Alternativos b6412a28-329c-4a24-b605-bc9d1b43b5b2