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Meetnetten.be - Exuviae counts for dragonflies in Flanders, Belgium

Citation

Piesschaert F, De Knijf G, Brosens D, Westra T, Desmet P, Ledegen H, Pollet M (2022). Meetnetten.be - Exuviae counts for dragonflies in Flanders, Belgium. Version 1.12. Research Institute for Nature and Forest (INBO). Sampling event dataset https://doi.org/10.15468/ue87ux accessed via GBIF.org on 2023-02-09.

Description

Meetnetten.be - Exuviae counts for dragonflies in Flanders, Belgium is a sampling event dataset published by the Research Institute of Nature and Forest (INBO). It is part of the Meetnetten.be suite of monitoring networks for priority species in Flanders, in which data are collected at fixed locations using a standardized protocol (https://meetnetten.be). This dataset contains exuviae (larval skin remained behind after ecdysis) counts for 1 priority dragonfly species (Gomphus flavipes). Here it is published as a standardized Darwin Core Archive and includes for each sampling event an eventID, date, location and sampling protocol (in the event core), the length of the transect (in the measurement or fact extension) and for each occurrence an occurrenceID, the number of recorded individuals, status (present/absent), life stage, sex and scientific name (in the occurrence extension). Issues with the dataset can be reported at https://github.com/inbo/meetnetten-occurrences/issues

Generalized and/or withheld information: as these are sensitive priority species, location information is generalized to 1, 5 or 10 km Universal Transverse Mercator (UTM) grid cells. Original locations are available upon request.

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.

For all published Meetnetten.be datasets, see https://www.gbif.org/dataset/search?project_id=meetnetten.be

Sampling Description

Study Extent

1. Gomphus flavipes (River Clubtail / Rivierrombout) occurs in medium-sized to large rivers, preferably with sandy substrate. The habitat of the Flemish population is somewhat different as the species reproduces her in a busy canal with concrete banks (De Knijf et al. 2013). We follow up on this species by counting the larval skins.

Sampling

Sampling was done using the protocol described in De Knijf et al. (2019) and explained to volunteers in Ledegen et al. (2017). 1. Gomphus flavipes (River Clubtail/ Rivierrombout): During a count of larval skins, the riparian bank is slowly crossed over a length of 500 m and every larval skin found is collected. The location is preferably read with a GPS. Each transect is visited once every 10 days and this in the period from 1 June to 15 August (6 visits in total).

Quality Control

Data are collected using a predefined sampling protocol.

Method steps

  1. Researchers from INBO and Natuurpunt Studie define and document the appropriate sampling protocol for the target species.
  2. Fieldwork is planned and coordinated by Natuurpunt Studie, using https://meetnetten.be.
  3. Data are collected in the field by specialized volunteers, using the predefined sampling protocol.
  4. Volunteers enter the collected data in https://meetnetten.be.
  5. A custom SQL view is created in the meetnetten.be database to map the original data to Darwin Core as an event core, occurrence extension and measurement or fact extension.

Additional info

We like to thank the "Libellenvereniging Vlaanderen” (https://www.odonata.be) for their input in creating this dataset.

Taxonomic Coverages

The target dragonfly species for Meetnetten.be are listed at https://meetnetten.be/#group-6. Other dragonflies observed during the sampling are momentarily not included. This dataset covers the larval skin protocol, for which there is 1 target species. In a later phase, when the monitoring of Gomphus vulgatissimus is operational, more data will be included.
  1. Animalia
    rank: kingdom
  2. Arthropoda
    rank: phylum
  3. Insecta
    common name: insects rank: class
  4. Odonata
    common name: dragonflies rank: order
  5. Gomphus flavipes
    common name: Rivierrombout rank: species

Geographic Coverages

Flanders, Belgium

Bibliographic Citations

  1. De Knijf G, Ledegen H & Westra T (2019) Monitoringsprotocol Libellen. Versie – 2.0. Rapporten van het Instituut voor Natuur- en Bosonderzoek 2019 (49). Instituut voor Natuur- en Bosonderzoek, Brussel. - https://doi.org/10.21436/inbor.17262395
  2. De Knijf G., Adriaens T., Vermylen R. & Van der Schoot P. 2013. Ontdekking van een populatie Rivierrombout (Gomphus flavipes) op het Albertkanaal (België), een van de drukst bevaren kanalen van Europa, en een overzicht van de status in West- en Midden-Europa. Brachytron, 16: 3-17. -
  3. Ledegen H & De Knijf G (2017) Veldwerkhandleiding Libellen. Natuurpunt Studie, Mechelen. -

Contacts

Frederik Piesschaert
originator
position: researcher
Research Institute for Nature and Forest (INBO)
BE
email: frederick.piesschaert@inbo.be
userId: http://orcid.org/0000-0002-5843-646X
Geert De Knijf
originator
position: Researcher
Research Institute for Nature and Forest (INBO)
BE
email: geert.deknijf@inbo.be
userId: http://orcid.org/0000-0002-7958-1420
Dimitri Brosens
originator
position: Researcher
Research Institute for Nature and Forest (INBO)/ Belgian Biodiversity Platform
BE
email: dimitri.brosens@inbo.be
userId: http://orcid.org/0000-0002-0846-9116
Toon Westra
originator
position: Researcher
Research Institute for Nature and Forest (INBO)
BE
email: toon.westra@inbo.be
userId: http://orcid.org/0000-0003-2478-9459
Peter Desmet
originator
position: Researcher
Research Institute for Nature and Forest (INBO)
BE
email: peter.desmet@inbo.be
userId: http://orcid.org/0000-0002-8442-8025
Hannes Ledegen
originator
Natuurpunt
BE
email: hannes.ledegen@natuurpunt.be
homepage: http://www.natuurpunt.be
Marc Pollet
originator
position: Research manager
Research Institute for Nature and Forest (INBO)
BE
userId: http://orcid.org/0000-0001-5198-5928
Dimitri Brosens
metadata author
position: researcher
Research Institute for Nature and Forest (INBO)/ Belgian Biodiversity Platform
BE
email: dimitri.brosens@inbo.be
userId: http://orcid.org/0000-0002-0846-9116
Peter Desmet
metadata author
Research Institute for Nature and Forest (INBO)
BE
userId: http://orcid.org/0000-0002-8442-8025
Frederik Piesschaert
administrative point of contact
position: researcher
Research Institute for Nature and Forest (INBO)
BE
email: frederik.piesschaert@inbo.be
userId: http://orcid.org/0000-0002-5843-646X
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