Inventory of the terrestrial isopods in Belgium (2011-2020)
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 waarnemingen.be and observations.be, 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 (http://creativecommons.org/publicdomain/zero/1.0/). We would appreciate however, if you read and follow these norms for data use (http://www.natuurpunt.be/normen-voor-datagebruik) and provide a link to the original dataset (https://doi.org/10.15468/mw9c66) 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 firstname.lastname@example.org.
The data in this occurrence resource has been published as a Darwin Core Archive (DwC-A), which is a standardized format for sharing biodiversity data as a set of one or more data tables. The core data table contains 19,438 records.
This IPT archives the data and thus serves as the data repository. The data and resource metadata are available for download in the downloads section. The versions table lists other versions of the resource that have been made publicly available and allows tracking changes made to the resource over time.
Download the latest version of this resource data as a Darwin Core Archive (DwC-A) or the resource metadata as EML or RTF:
The table below shows only published versions of the resource that are publicly accessible.
How to cite
Researchers should cite this work as follows:
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. https://doi.org/10.15468/mw9c66
Researchers should respect the following rights statement:
The publisher and rights holder of this work is 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.
Occurrence; Observation; detritivores; distribution; habitat; inventory; Isopoda; Oniscidea; woodlice; Occurrence
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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.
|Bounding Coordinates||South West [49.49, 2.53], North East [51.51, 6.42]|
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.
|Family||Ligiidae, Trichoniscidae, Styloniscidae, Oniscidae, Philosciidae, Platyarthrus, Armadillidiidae, Armadiliidae, Cylisticidae, Porcellionidae, Trachelipodidae|
|Species||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|
|Start Date / End Date||2011-01-01 / 2020-12-31|
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).
|Study Extent||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 http://www.waarnemingen.be and https://www.observations.be 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.|
|Quality Control||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.|
Method step description:
- Spinicornis members sampled different habitats in all squares of the UTM 10 x 10 km² grid in Belgium and entered the observations in waarnemingen.be / observations.be. These portals are managed by Natuurpunt Studie and Natagora respectively, but use the same underlying database system.
- Spinicornis members identified specimens observed and collected. The data records were subsequently imported in the waarnemingen.be database.
- Spinicornis also validated observations entered by volunteers in waarnemingen.be and observations.be between 2011 and 2020.
- A custom SQL view is created in the database to map the original data to Darwin Core as an occurrence core.
- A delimited file was created and exported from the waarnemingen database.
- The generated Darwin Core file was imported in the INBO IPT and documented with metadata.
- The dataset is published and registered with GBIF.
- 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)
- 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
- 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 https://doi.org/10.3897/zookeys.801.21894
- De Smedt P., Boeraeve P., Arijs G., Segers S. (2020) De landpissebedden van België (Isopoda: Oniscidea). Spinicornis, Bonheiden, Belgium, 148pp.