Meetnetten - Transects for butterflies in Flanders, Belgium

Latest version published by Research Institute for Nature and Forest (INBO) on Dec 23, 2019 Research Institute for Nature and Forest (INBO)

The Meetnetten - Transects for butterflies in Flanders, Belgium dataset is an sample event dataset published by the Research Institute for Nature and Forest (INBO) and is part of the 'Meetnetten- Monitoring schemes' suite. This dataset deals with the butterfly transect data. The dataset contains count data of following priority species: Lasiommata megera, Erynnis tages, Satyrium ilicis, Phengaris alcon, Apatura iris, Hipparchia semele, Cyaniris semiargus, Hesperia comma, Pyronia tithonus, Melitaea cinxia. Additionally the dataset contains count data of other butterfly species that are not the target species of the monitoring schemes. The Flemish government requires high-quality information on a number of priority plant and animal species in Flanders These are species that are protected in the framework of the European Habitats and Birds Directives, but also other species that are important for Flemish nature policy. To provide this information the Research Institute for Nature and Forest (INBO) developed a number of long-term monitoring schemes (meetnetten.be). Each monitoring scheme consists of fixed sample locations in which target species are counted based on a standardized protocol. Data collection relies mainly on specialised volunteers and the NGO Natuurpunt Studie plays an important role in field work coordination. Meetnetten.be is the web tool for planning and monitoring this fieldwork and for entering the field data in an accessible and efficient manner. Monitoring schemes for 65 priority species (within 11 different species groups) were started between 2016 and 2018. In total, these monitoring schemes consist of more than 1,600 locations. We have released this dataset to the public domain under a Creative Commons Zero waiver. We would appreciate it if you follow the INBO norms for data use (https://www.inbo.be/en/norms-data-use) when using the data. If you have any questions regarding this dataset, don't hesitate to contact us via the contact information provided in the metadata or via opendata@inbo.be. Issues with the dataset can be reported at: https://github.com/inbo/soortenmeetnetten-events/issues Please mention the specific dataset.

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 9,725 records. 2 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)
    9725
  • MeasurementOrFact 
    72000
  • Occurrence 
    24000

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.

Downloads

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 9,725 records in English (731 KB) - Update frequency: annually
Metadata as an EML file download in English (19 KB)
Metadata as an RTF file download in English (17 KB)

Versions

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

How to cite

Researchers should cite this work as follows:

Piesschaert F. et al, (2019): Meetnetten - Transects for butterflies in Flanders, Belgium. v1. Research Institute for Nature and Forest (INBO). Dataset/Samplingevent. https://ipt.inbo.be/resource?r=meetnetten-butterflies-occurrences&v=1.0

Rights

Researchers should respect the following rights statement:

The publisher and rights holder of this work is Research Institute for Nature and Forest (INBO). 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.

GBIF Registration

This resource has been registered with GBIF, and assigned the following GBIF UUID: 63938753-1fec-4c08-ae39-e9f8a6576521.  Research Institute for Nature and Forest (INBO) publishes this resource, and is itself registered in GBIF as a data publisher endorsed by Belgian Biodiversity Platform.

Keywords

Occurrence; butterflies; monitoring

Contacts

Who created the resource:

Dimitri Brosens
Frederic Piesschaert
Toon Westra
Research Institute for Nature and Forest (INBO) BE
http://www.inbo.be
Marc Pollet
Research Institute for Nature and Forest (INBO) BE
http://www.inbo.be
Wim Veraghtert
Natuurpunt BE
http://www.natuurpunt.be
Sam Van de Poel
Natuurpunt BE
http://www.natuurpunt.be
Dirk Maes
Research Institute for Nature and Forest (INBO) BE
http://www.inbo.be

Who can answer questions about the resource:

Frederic Piesschaert
Researcher
Research Institute for Nature and Forest (INBO) BE
http://www.inbo.be

Who filled in the metadata:

Dimitri Brosens
INBO/ Belgian Biodiversity Platform BE
Toon Westra
INBO BE

Who else was associated with the resource:

User
Dimitri Brosens

Geographic Coverage

Flanders, Belgium

Bounding Coordinates South West [50.67, 2.53], North East [51.51, 5.94]

Taxonomic Coverage

The target butterfly species for the 'Meetnetten' project are: Lasiommata megera, Erynnis tages, Satyrium ilicis, Phengaris alcon, Apatura iris, Hipparchia semele, Cyaniris semiargus, Hesperia comma, Pyronia tithonus and Melitaea cinxia. Other butterflies observed during the sampling are also included.

Order  Lepodoptera
Species  Lasiommata megera,  Erynnis tages,  Satyrium ilicis,  Phengaris alcon,  Apatura iris,  Hipparchia semele,  Cyaniris semiargus,  Hesperia comma,  Pyronia tithonus,  Melitaea cinxia

Temporal Coverage

Start Date / End Date 2016-01-01 / 2018-12-31

Project Data

The Flemish government wants to collect high-quality information on a number of priority plant and animal species by means of monitoring networks. These are species on which Flanders has to report to Europe in the framework of the Habitats and Birds Directives, but also other species that are important for the Flemish nature policy.

Title Meetnetten.be
Funding Flemish Government
Study Area Description Flanders
Design Description Data are collected in a monitoring network in accordance with a strictly defined methodology. The locations to be visited are fixed. Meetnetten.be is the web tool for planning and monitoring this fieldwork and for entering the field data in an accessible and efficient manner.

The personnel involved in the project:

Author
Frederic Piesschaert

Sampling Methods

Sampling Protocol: Butterflies Transects Grizzled skipper, Dingy skipper, Mazarine blue, Silver-spotted skipper, and Glanville fritillary occur in less than 30 locations in Flanders. For these species all locations are selected for monitoring and counted annually. Grayling, Wall brown, and Gatekeeper occur in more than 30 locations. For these species a random sample of 30 locations was drawn which are counted once every three years. Within each selected location, transect counts are carried out. A fixed route of a maximum of 1000m is mapped out, along which the numbers of butterflies per section of 50m are counted within an imaginary cage of 5x5m around the observer. The sampling protocol may vary a little, depending on the butterfly species. For the Grizzled skipper we ask at least 3 field visits in good butterfly weather, during the month of May. For the Wall brown, in a counting year we ask for 6 field visits in good butterfly weather, 3 in May and 3 in the period from 20 July to 20 August. The Dingy skipper flies in 2 generations, in spring (May) and in high summer (20 July - 20 August) and is therefore followed up in both seasons (at least six field visits). For the Grayling, in a counting year we ask at least 3 field visits in good butterfly weather, in the period from 20 July to 20 August. The first generation of Mazarine blues flies in spring (May). The second generation can be found in high summer (10 July - 10 August). Both seasons are followed up in this monitoring network (at least three field visits per flying season). For the Silver spotted skipper, we ask at least 3 field visits in good butterfly weather, during the month of August. For the Gatekeeper, in a counting year we ask at least 3 field visits in good butterfly weather, in the period from 15 July to 15 August. For the Glanville fritillary, we ask at least 3 field visits in good butterfly weather, between 1 and 31 May.

Study Extent The Grizzled skipper (Aardbeivlinder) can be found in only a handful of locations in Flanders. It is a kind of poor grassland, where the host plant Tormentil(Potentilla erecta) grows. The Wall brown (Argusvlinder) lives in verges and grasslands. Although it is bound by general grasses, it has deteriorated considerably in recent decades. The distribution of the Dingy skipper (Bruin dikkopje) in Flanders is limited to a handful of locations in Limburg. This little-unremarkable species prefers (calcareous) grasslands with common bird's-foot trefoil. The Grayling (Heivlinder) is mainly found on dry heathland, heather-rich grasslands and dunes with open sand, sheep grass or ostrich grass. Of the once more widespread, but now endangered Mazarine blue (Klaverblauwtje), unfortunately only one location remains to be counted. This species is bound to grasslands with sufficient Red clover, the host plant. The Silver-spotted skipper (Kommavlinder) can be found in a limited number of dry heathland areas with well-developed heather-rich vegetation. The Gatekeeper (Oranje zandoogje) is a common species in Flanders that occurs locally in high densities. The distribution of this species is limited to Europe and in Western Europe the Gatekeeper reaches high densities, but here and there the species declines: therefore this butterfly was selected as a Flemish priority species and is followed up. The Glanville fritillary (Veldparelmoervlinder) can be found in barren grasslands with a sufficient number of narrow plantain. It is a beautiful, orange-brown butterfly that flutters around in the spring.
Quality Control There is a very strict sampling protocol to follow.

Method step description:

  1. Collection of data following the field protocol
  2. Data is stored in a relational database
  3. A custom SQL view on the database was created to map the original data to DwC
  4. A database connection from IPT to the relational database was created
  5. Completion of the IPT data publication proces (mapping & metadata)
  6. Data was published to GBIF

Additional Metadata

A high resolution dataset can be obtained after contacting the authors.

Alternative Identifiers 63938753-1fec-4c08-ae39-e9f8a6576521
https://ipt.inbo.be/resource?r=meetnetten-butterflies-occurrences