Description
Enregistrements de données
Les données de cette ressource données d'échantillonnage ont été publiées sous forme dune Archive Darwin Core (Darwin Core Archive ou DwC-A), le format standard pour partager des données de biodiversité en tant quensemble dun ou plusieurs tableurs de données. Le tableur de données du cœur de standard (core) contient 653 enregistrements.
2 tableurs de données dextension existent également. Un enregistrement dextension fournit des informations supplémentaires sur un enregistrement du cœur de standard (core). Le nombre denregistrements dans chaque tableur de données dextension est illustré ci-dessous.
Cet IPT archive les données et sert donc de dépôt de données. Les données et métadonnées de la ressource sont disponibles pour téléchargement dans la section téléchargements. Le tableau des versions liste les autres versions de chaque ressource rendues disponibles de façon publique et permet de tracer les modifications apportées à la ressource au fil du temps.
Versions
Le tableau ci-dessous naffiche que les versions publiées de la ressource accessibles publiquement.
Comment citer
Les chercheurs doivent citer cette ressource comme suit:
Piesschaert F, De Knijf G, Brosens D, Westra T, Desmet P, Ledegen H, Pollet M (2026). Meetnetten.be - Transects for dragonflies in Flanders, Belgium. Version 1.28. Research Institute for Nature and Forest (INBO). Samplingevent dataset. https://doi.org/10.15468/y8u6e9
Droits
Les chercheurs doivent respecter la déclaration de droits suivante:
L’éditeur et détenteur des droits de cette ressource est Research Institute for Nature and Forest (INBO). En vertu de la loi, léditeur a abandonné ses droits par rapport à ces données et les a dédié au Domaine Public (CC0 1.0). Les utilisateurs peuvent copier, modifier, distribuer et utiliser ces travaux, incluant des utilisations commerciales, sans aucune restriction.
Enregistrement GBIF
Cette ressource a été enregistrée sur le portail GBIF, et possède lUUID GBIF suivante : 9100f482-848c-42e7-bf7c-19947885ce48. Research Institute for Nature and Forest (INBO) publie cette ressource, et est enregistré dans le GBIF comme éditeur de données avec lapprobation du Belgian Biodiversity Platform.
Mots-clé
Samplingevent; Odonata; dragonflies; damselflies; monitoring; priority species; Flanders; Samplingevent
Contacts
- Créateur ●
- Personne De Contact
- researcher
http://orcid.org/0000-0002-5843-646X
- Créateur
- Researcher
- Fournisseur Des Métadonnées
- Researcher
- Créateur
- Researcher
- Fournisseur Des Métadonnées
- Researcher
- Créateur
- Research manager
- Fournisseur Des Métadonnées
- Fournisseur Des Métadonnées
Couverture géographique
Flanders, Belgium
| Enveloppe géographique | Sud Ouest [50,67, 2,53], Nord Est [51,51, 5,94] |
|---|
Couverture taxonomique
The target dragonfly species for Meetnetten.be are listed at https://meetnetten.be/#group-6. Other dragonflies observed during the sampling are also included. This dataset covers the transect protocol, for which there are 3 target species.
| Kingdom | Animalia |
|---|---|
| Phylum | Arthropoda |
| Class | Insecta |
| Order | Odonata |
| Species | Calopteryx virgo (Beautiful Demoiselle / Bosbeekjuffer), Coenagrion pulchellum (Variable Damselfly / Variabele waterjuffer), Aeshna isoceles (Green-eyed Hawker / Vroege glazenmaker) |
Couverture temporelle
| Date de début / Date de fin | 2016-01-01 / 2023-12-31 |
|---|
Données sur le projet
Meetnetten.be is a suite of monitoring networks through which the Flemish Government is collecting high-quality information on 65 priority plant and animal species. 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.
| Titre | Meetnetten.be |
|---|---|
| Identifiant | meetnetten.be |
| Financement | Flemish Government |
| Description du domaine détude / de recherche | Flanders, Belgium |
| Description du design | Each monitoring network consists of fixed sample locations in which target species are counted based on a standardized protocol. Data collection relies mainly on specialized volunteers, coordinated by the NGO Natuurpunt Studie. Fieldwork is planned and monitored with the web tool https://meetnetten.be, which is also used for entering the collected data. |
Les personnes impliquées dans le projet:
Méthodes déchantillonnage
Sampling was done using the protocol described in De Knijf et al. (2019) and explained to volunteers in Ledegen et al. (2017). 1. Calopteryx virgo (Beautiful demoiselle / Bosbeekjuffer): a sample of 30 populations is monitored, of which 10 are counted each year. In the year a population is counted, at least three transect counts are carried out when flying adults occur (May 20 - Aug 20), with good dragonfly weather, between 11h and 16:30h. A transect is located along the shore and is at least 100m, maximum 500m long (depending on the amount of suitable habitat). During a count, the transect is walked slowly and all adults are counted up to a distance of 2 m on the bank and 3 m above the water. 2. Coenagrion pulchellum (Variable Damselfly / Variabele waterjuffer): a sample of 30 populations is monitored, of which 10 are counted each year. In the year a population is counted, at least two transect counts are carried out when flying adults occur (May-June), in good dragonfly weather, between 11h and 16:30h. A transect is located along the shore and is about 100 m long (depending on the amount of suitable habitat). During a count, the transect is walked slowly and all adults are counted up to a distance of 2 m on the bank and 3 m above the water. 3. Aeshna isoceles (Green-eyed Hawker / Vroege glazenmaker): a sample of 30 populations is monitored, of which 10 are counted each year. In the year a population is counted, at least two transect counts are carried out when flying adults occur (20 May - 30 June), with good dragonfly weather, between 11h and 16:30h. A transect is located along the shore and is about 100 m long (up to a maximum of 500 m depending on the amount of suitable habitat). During a count, the transect is walked slowly and all adults are counted up to a distance of 2 m on the bank and 5 m above the water.
| Etendue de létude | 1. Calopteryx virgo (Beautiful Demoiselle / Bosbeekjuffer) occurs near oxygen rich watercourses with good water quality and riverbank that mostly consist of trees and bushes. The males exhibit territorial behaviour over a 5 m stretch of sunlit water/riverbank. In Flanders it is widely distributed in the eastern half of the region. 2. Coenagrion pulchellum (Variable Damselfly / Variabele waterjuffer) occurs mainly in moderately to nutrient-rich pools and ponds characterized by well-developed aquatic and riparian vegetation. Although it is scarcely distributed all over Flanders, it shows a clear preference for the valley of the river Scheldt and its major tributaries. 3. Aeshna isoceles (Green-eyed Hawker / Vroege glazenmaker) occurs in moderately to nutrient-rich pools and ponds. It can also be found in nutrient-rich fens. The riparian vegetation is well developed and reed or bulrush is mostly present. The species has seen a strong increase and expansion in Flanders over the last 10 years and shows a clear preference for the major river valleys and areas with high densities of pools.. |
|---|---|
| Contrôle qualité | Data are collected using a predefined sampling protocol. |
Description des étapes de la méthode:
- Researchers from INBO and Natuurpunt Studie define and document the appropriate sampling protocol for the target species.
- Fieldwork is planned and coordinated by Natuurpunt Studie, using https://meetnetten.be.
- Data are collected in the field by specialized volunteers, using the predefined sampling protocol.
- Volunteers enter the collected data in https://meetnetten.be.
- 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.
- The Darwin Core views are connected to the INBO IPT and documented with metadata.
- The dataset is published and registered with GBIF.
Citations bibliographiques
- Ledegen H & De Knijf G (2017) Veldwerkhandleiding Libellen. Natuurpunt Studie, Mechelen.
- 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
- De Knijf G, Anselin A, Goffart P & Tailly M (eds.) (2006) De libellen (Odonata) van België: verspreiding - evolutie - habitats. Libellenwerkgroep Gomphus i.s.m. Instituut voor Natuur- en Bosonderzoek, Brussel.
Métadonnées additionnelles
We like to thank the "Libellenvereniging Vlaanderen” (https://www.odonata.be) for their input in creating this dataset.
| Identifiants alternatifs | 9100f482-848c-42e7-bf7c-19947885ce48 |
|---|---|
| https://ipt.inbo.be/resource?r=meetnetten-libellen-transect-occurrences |