Description
The dataset concerns 690 clutches with collected bird eggs and approximately 4500 found but not collected clutches, mostly in The Netherlands. Much information was available about each clutch from the collector Bernard van Dooren. This included: locality, number of eggs, reference date, status of breeding (lightly bred, severely bred), number of young on reference date, number of young eventually ringed, ring numbers, nest height, habitat and other ecological data. The egg collection is preserved in Naturalis, Leiden as well as the eight notebooks with detailed observations on the clutches by Bernard van Dooren.
Enregistrements de données
Les données de cette ressource occurrence 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 5 249 enregistrements.
1 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.
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 n'affiche que les versions publiées de la ressource accessibles publiquement.
Droits
Les chercheurs doivent respecter la déclaration de droits suivante:
L’éditeur et détenteur des droits de cette ressource est Netherlands Ornithologists' Union (NOU). En vertu de la loi, l'éditeur 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 l'UUID GBIF suivante : d1805c77-25fa-4538-8c32-3d32a9883259. Netherlands Ornithologists' Union (NOU) publie cette ressource, et est enregistré dans le GBIF comme éditeur de données avec l'approbation du Netherlands Biodiversity Information Facility.
Mots-clé
Metadata; De Kempen; eggs; Bernard van Dooren.
Contacts
- Fournisseur Des Métadonnées ●
- Créateur ●
- Personne De Contact
- Chair
- IJskelderlaan 3
- +31.657.557047
- Créateur
- Aarperstraat 35
- +31.40.2014398
- Créateur
- Data manager
https://orcid.org/0000-0001-6131-7026
Couverture géographique
Mostly The Netherlands, and in particular De Kempen area in the Province of Noord-Brabant. Also Belgium and in a few cases also other countries in the world.
| Enveloppe géographique | Sud Ouest [38,879, -79,47], Nord Est [65,721, 25,318] |
|---|
Couverture taxonomique
Breeding birds.
| Kingdom | Animalia |
|---|---|
| Phylum | Chordata |
| Class | Aves |
| Order | Apodiformes, Charadriiformes, Galliformes, Passeriformes, Strigiformes, Coraciiformes, Accipitriformes |
| Family | Fringillidae, Scolopacidae, Alcedinidae, Sylviidae, Corvidae, Prunellidae, Accipitridae, Hirundinidae, Strigidae, Muscicapidae, Phasianidae, Emberizidae, Apodidae, Turdidae, Acrocephalidae, Paridae |
Couverture temporelle
| Epoque de formation | 1905-1977 |
|---|
Données sur le projet
Digitizing diaries of Bernardus van Dooren with detailed information about the clutches from 1930-1970.
| Titre | Digitalisering historische legseldata van 150 vogelsoorten uit de Kempen |
|---|---|
| Identifiant | nlbif2022.006 |
| Financement | NLBIF call |
| Description du domaine d'étude / de recherche | De Kempen area, Noord-Brabant as well as other areas in The Netherlands |
| Description du design | Diaries were analyzed and all relevant data about the collected and found clutches were retrieved and entered in an excel sheet. Especially data on location, bird species and collectors were collated, as well data on the clutches (eggs, young, failures etc) and the habitat in which the clutches were found. |
Les personnes impliquées dans le projet:
Méthodes d'échantillonnage
Methods and skills of Bernard van Dooren are described in: Van Dooren J. & J.F.J.Jansen 2018. Eierzoeker in de Brabantse Kempen: Bernardus van Dooren (1908-1988), Limosa 91.1: 38 – 43.
| Etendue de l'étude | Most clutches are collected in the De Kempen by collector Bernard van Dooren in the 1930s-1970s. |
|---|---|
| Contrôle qualité | Quality control was obtained including Jan van Dooren -- son of Bernardus van Dooren -- in the team. He accompanied his father often in the field while collecting clutches. Questions that arose during the digitization process of the diaries, such as geographic locations, habitat, and other issues, were checked with him. |
Description des étapes de la méthode:
- Analyzing the diaries on the diversity and consistency of quantitative and qualitative information
- Structuring the dataset according this information
- Entering the data from the diaries, evaluating the intermediate results and adjusting the structure of the dataset where necessary.
- After completing entering, checking thoroughly all data per species successively.
- Adding information on taxonomy (based on the Dutch Species Register) and geographic information by a) transforming Dutch grid coordinates into WGS84 coordinates and their uncertainty as well by b) georeferencing textual locality descriptions.
- Writing a R-script to transform the data from Excel into DarwinCore, producing a occurrence file and measurementOrFact file
- Publishing dataset and adding detailed metadata
- Publishing original spreadsheet with more details on Zenodo.
Citations bibliographiques
- Van Dooren J. & J.F.J. Jansen 2018. Eierzoeker in de Brabantse Kempen: Bernardus van Dooren (1908-1988), Limosa 91(1): 38 – 43.
- BernardusVanDooren_DigitalisatieProject_NLBIF2022.006 10.5281/zenodo.10888751
Métadonnées additionnelles
In the dataset there are several fields that use codes are definitions that might be not immediately clear.
For eventDate the reference date ("Referentie-datum") is used. This is the when the maximum number of eggs is found, which in most case will be the date when a clutch was found.
Record number is the number used by Bernardus van Dooren for each clutch (these numbers were not fully unique or consistent, there a new occurrenceID has been created)
The term "eimaten" (egg measurements) means how many eggs are measured (length * width) (data on eggs are at Zenodo)
For the following terms the different enumerations are used (when value =
| Objet | Digitizing notebooks of Bernardus van Dooren with detailed information on found and collected clutches in the 1930s up to the 1970s. These notes have a high historical value and are a rich source of data on the breeding biology and breeding distribution of birds in the Kempen area, province of Noord-Brabant, The Netherlands at that time. The full dataset can be found at Zenodo , NLBIF community. |
|---|---|
| Identifiants alternatifs | d1805c77-25fa-4538-8c32-3d32a9883259 |
| https://ipt.nlbif.nl/resource?r=bvd_eggcollection |