Meetnetten.be - Transects for dragonflies in Flanders, Belgium

Dernière version Publié par Research Institute for Nature and Forest (INBO) le Sep 11, 2020 Research Institute for Nature and Forest (INBO)

Meetnetten.be - Transects 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 transect data for 3 priority dragonfly species, as well as other dragonflies observed during sampling. 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

Enregistrements de données

Les données de cette ressource données d'échantillonnage ont été publiées sous forme d'une Archive Darwin Core (Darwin Core Archive ou DwC-A), le format standard pour partager des données de biodiversité en tant qu'ensemble d'un ou plusieurs tableurs de données. Le tableur de données du cœur de standard (core) contient 123 enregistrements. 2 tableurs de données d'extension existent également. Un enregistrement d'extension fournit des informations supplémentaires sur un enregistrement du cœur de standard (core). Le nombre d'enregistrements dans chaque tableur de données d'extension est illustré ci-dessous.

  • Event (noyau)
    123
  • Occurrence 
    1461
  • MeasurementOrFact 
    123

Cet IPT archive les données et sert donc de dépôt de données. Les données et métadonnées des ressources sont disponibles au 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.

Téléchargements

Téléchargez la dernière version de la ressource en tant qu'Archive Darwin Core (DwC-A), ou les métadonnées de la ressource au format EML ou RTF :

Données sous forme de fichier DwC-A (zip) télécharger 123 enregistrements dans Anglais (28 KB) - Fréquence de mise à jour: annuel
Métadonnées sous forme de fichier EML télécharger dans Anglais (19 KB)
Métadonnées sous forme de fichier RTF télécharger dans Anglais (18 KB)

Versions

Le tableau ci-dessous n'affiche 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 (2020): Meetnetten.be - Transects for dragonflies in Flanders, Belgium. v1.11. Research Institute for Nature and Forest (INBO). Dataset/Samplingevent. 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). 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.

Enregistrement GBIF

Cette ressource a été enregistrée sur le portail GBIF, et possède l'UUID 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 l'approbation du Belgian Biodiversity Platform.

Mots-clé

Samplingevent; Odonata; dragonflies; damselflies; monitoring; priority species; Flanders

Contacts

Personne ayant créé cette ressource:

Frederik Piesschaert
researcher
Research Institute for Nature and Forest (INBO) BE
Geert De Knijf
Researcher
Research Institute for Nature and Forest (INBO) BE
Dimitri Brosens
Researcher
Research Institute for Nature and Forest (INBO)/ Belgian Biodiversity Platform 9050 BE
Toon Westra
Researcher
Research Institute for Nature and Forest (INBO) BE
Peter Desmet
Researcher
Research Institute for Nature and Forest (INBO) BE
Hannes Ledegen
Marc Pollet
Research manager
Research Institute for Nature and Forest (INBO) BE

Personne pouvant répondre aux questions sur la ressource:

Frederik Piesschaert
researcher
Research Institute for Nature and Forest (INBO) BE

Personne ayant renseigné les métadonnées:

Dimitri Brosens
Research Institute for Nature and Forest (INBO)/ Belgian Biodiversity Platform BE
Peter Desmet
Research Institute for Nature and Forest (INBO)

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 / 2018-12-31

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 d'étude / 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:

Personne de Contact
Frederik Piesschaert

Méthodes d'échantillonnage

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 l'étude 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:

  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.
  6. The Darwin Core views are connected to the INBO IPT and documented with metadata.
  7. The dataset is published and registered with GBIF.

Citations bibliographiques

  1. Ledegen H & De Knijf G (2017) Veldwerkhandleiding Libellen. Natuurpunt Studie, Mechelen.
  2. 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
  3. 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