Sampling event

Meijendel research 1953-1960

Latest version published by Biometris Wageningen Plant Science group on 10 January 2023 Biometris Wageningen Plant Science group
Publication date:
10 January 2023
CC-BY-NC 4.0

Download the latest version of this resource data as a Darwin Core Archive (DwC-A) or the resource metadata as EML or RTF:

Data as a DwC-A file download 37,770 records in English (1 MB) - Update frequency: unknown
Metadata as an EML file download in English (12 KB)
Metadata as an RTF file download in English (12 KB)


The dataset contains sampling data of 100 pitfalls that were collected weekly in the Meijendel dune area from March 1953 until March 1960. The dataset contains more than 250 beetle species together with a number of mammal species. The research was done by the Animal Ecology and Plant Ecology group of Leiden University. In particular, drs. G.J. de Bruyn throughout the years has made much effort to empty the pitfalls, identify specimens. In addition, he acted as custodian of the specimen collections and archival records until these could be digitized.

Pitfalls were placed in groups of three in replicates of the same set of habitats, running along a gradient from open vegetation dominated by low vegetation (<5cm) and bare sand, through to various stands of woods, groves and shrub dominated vegetations. More details will be published as supplementary material in a data paper

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 37,770 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.


Researchers should respect the following rights statement:

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: 9d02b439-aa5c-4c22-b1d9-d27fbde9e3ee.  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; Dutch coastal dunes; Meijendel onderzoek


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
  • Processor
Node manager
PO Box 9517
NL-2300 RA Leiden

Geographic Coverage

Meijendel area, part of the Dutch dune system

Bounding Coordinates South West [52.113, 4.293], North East [52.147, 4.366]

Taxonomic Coverage

Beetles and a few mammals.

Order Coleoptera (Beetles), Rodentia (Mice)
Family Soricidae (Shrews), Talpidae (Moles)

Temporal Coverage

Start Date / End Date 1953-03-01 / 1960-03-10

Project Data

Publishing historic data from the research carried out in 1953-1960 in the Meijendel part of the Dutch dune area.

Title Het digitaal beschikbaar maken van een historisch gegevensbestand uit de regio Meijendel.
Identifier nlbif2020.005
Funding NLBIF and Dunea
Study Area Description see data paper:
Design Description see data paper:

The personnel involved in the project:

Gijs Gerrits

Sampling Methods

Pitfalls without preservative. Emptied and collected once per week. Samples were stored in 70% alcohol and identified by researchers of the Animal Ecology group from the Leiden University in the years following the sampling program. Locations were recorded as Amersfoort coordinates.

Study Extent March 1953- March 1960
Quality Control After digitization data was checked via row sums and column sums; when all files were digitized we checked the input once more by row and column sums.

Method step description:

  1. Writing down the catches on paper (in the early 1970s), registering the catches in an excel file per species for all 7 years; and checking some parts of the resulting file in a random way.
  2. Writing an R program for getting the data in the right format for GBIF.
  3. Checking some parts of the resulting file in a random way.

Bibliographic Citations

  1. Gerrits G, Hemerik L (2022) Occurrence data on beetles (Coleoptera) collected in Dutch coastal dunes between 1953 and 1960. Biodiversity Data Journal 10: e90103.

Additional Metadata

Purpose monitoring
Maintenance Description not planned
Alternative Identifiers 9d02b439-aa5c-4c22-b1d9-d27fbde9e3ee