Sampling event

Macro-arthropods survey Drentsche Aa 1996

Latest version published by Biometris Wageningen Plant Science group on 19 February 2024 Biometris Wageningen Plant Science group
Publication date:
19 February 2024
CC-BY-NC 4.0

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Data as a DwC-A file download 2,898 records in English (326 KB) - Update frequency: unknown
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In 1996, a nine-month research program was carried out at Wageningen University in the soil biology department in collaboration with the Wijster Biological Station. The aim was to gain insight into which underground herbivores were present in the grasslands. The monitoring took place on four grasslands that had been taken out of agricultural production, which were no longer fertilized and were mowed annually to preserve the fields. These four lawns have not been fertilized since 1989, 1985, 1972 and 1967 respectively. On each of the fields, a section of 30m x 45m was chosen for the sampling. Pyramid falls were placed a ndmoved every two weeks, each within a section of 10m x 15m so as not to deprive the grass of light for a long time. The soil from places where the pitfalls were dug every fortnight was taken to the laboratory to sort these samples by hand for all kinds of larger arthropods and/or earthworms. Light traps and pot traps, all containing a 2% formalin solution, were emptied weekly. The captured ground beetles were identified to species by employees of the Wijster Biological Station and the other animals were first sorted into order or family. The spiders, harvestmen, beetle larvae, millipedes and centipedes were then identified to species by various specialists.

Data Records

The data in this sampling event 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 2,898 records.

1 extension data tables also exist. An extension record supplies extra information about a core record. The number of records in each extension data table is illustrated below.

Event (core)

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.


The table below shows only published versions of the resource that are publicly accessible.


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The publisher and rights holder of this work is Biometris Wageningen Plant Science group. This work is licensed under a Creative Commons Attribution Non Commercial (CC-BY-NC 4.0) License.

GBIF Registration

This resource has been registered with GBIF, and assigned the following GBIF UUID: a90782f8-e60e-46d8-82a4-e749b5cf69c3.  Biometris Wageningen Plant Science group publishes this resource, and is itself registered in GBIF as a data publisher endorsed by Netherlands Biodiversity Information Facility.


Historical data; Drentse A; soil samples; lightfall; pitfall


Lia Hemerik
  • Metadata Provider
  • Originator
  • Point Of Contact
Associate Professor
Biometris, Plant Sciences Group, Wageningen University
PO Box 16
6700AA Wageningen
Jeroen Creuwels
  • Originator
Data manager
PO Box 9517
NL-2300 RA Leiden
Niels Raes
Node manager
PO Box 9517
NL-2300 RA Leiden

Geographic Coverage

Streamdal valley of the Drentsche Aa, Anloo, The Netherlands

Bounding Coordinates South West [53.04, 6.674], North East [53.047, 6.695]

Taxonomic Coverage

Beetles, flies, midges, spiders, harvestmen, centipedes, millipedes, isopods, cicadas, moths, earwigs, earthworms

Order Auchenorrhyncha (cicadas), Dermaptera (earwigs), Lepidoptera (butterflies and moths)
Suborder Diptera (flies and midges), Heteroptera (true bugs), Hymenoptera (wasps), Symphyta (sawflies), Lepidoptera (butterflies and moths), Caelifera (grasshoppers and grasshopper-like insects)
Family Annelida; Lumbricidae (earthworms), Arachnidae; Liniphiidae (spiders), Coleoptera (beetles), Elateridae (click beetles), Staphylinidae (rove beetles), Diptera (flies and midges)
Subfamily Arachnidae; Erigoninae (spiders), Coleoptera (beetles)
Genus Carabidae (carabid beetles), Curculionidae (weevils), Elateridae (click beetles), Staphylinidae (rove beetles)
Species Arachnidae (spiders), Opilionidae (harvestmen), Chilopoda (centipedes), Diplopoda (millipedes), Cantharidae (soldier beetles), Carabidae (carabid beetles), Curculionidae (weevils), Elateridae (click beetles), Silphidae (carrion beetles), Staphylinidae (rove beetles), Isopoda (isopods)

Temporal Coverage

Start Date / End Date 1996-03-11 / 1996-12-23

Project Data

publishing historic data from the monitoring carried out in 1996 in the Streamvalley of the Drentsche A

Title Beschikbaar maken van monitoringsgegevens van insecten uit het stroomdallandschap van de Drentsche Aa.
Identifier nlbif2021.003
Funding NLBIF
Study Area Description see data paper
Design Description see data paper

The personnel involved in the project:

Sampling Methods

Bio-photo eklektors with one lightfall in the top and two pitfalls at ground level, for which the space was created by getting soil out of the grasslands were moved every fortnight. The lightfalls and pitfalls contained formaldehyde solution ??%. Soil samples were taken bi-weekly, lightfalls were emptied weekly and pitfalls were emptied weekly.

Study Extent March -December 1996
Quality Control Identifications of ground beetles were done by personnel of the biological station in Wijster; beetle larvae were identified by Michael Traugeot; weevils were identified by Theodoor Heijermans; click beetles were checked by Alterra; spiders and harvestmen were identified by Aart Noordam; millipedes, centipedes were identified by Matty Berg

Method step description:

  1. all identifications, to order, family, genus or species were stored in excel files; these were checked thourghly. Thereafter, the dataset was generated in GBIF style with the help of an R program.

Bibliographic Citations

  1. Hemerik and Brussaard 2002 DOI: 10.1016/S1164-5563(02)01136-6
  2. Berg and Hemerik 2004 DOI: 10.1007/s00374-004-0765-z

Additional Metadata

Purpose monitoring
Maintenance Description not planned
Alternative Identifiers a90782f8-e60e-46d8-82a4-e749b5cf69c3