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 548 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:
DIVR (2026): DIVR Citizen Science Dive Observations. Sampling-event dataset. DIVR, the Netherlands. Distributed under CC-BY 4.0. https://www.divr-connect.com
Droits
Les chercheurs doivent respecter la déclaration de droits suivante:
L’éditeur et détenteur des droits de cette ressource est Netherlands Biodiversity Information Facility (NLBIF). Ce travail est sous licence Creative Commons Attribution (CC-BY) 4.0.
Enregistrement GBIF
Cette ressource a été enregistrée sur le portail GBIF, et possède lUUID GBIF suivante : a5e45713-e815-4cae-ba0d-7a8b2cf2a3d4. Netherlands Biodiversity Information Facility (NLBIF) publie cette ressource, et est enregistré dans le GBIF comme éditeur de données avec lapprobation du Netherlands Biodiversity Information Facility.
Mots-clé
Samplingevent
Contacts
Couverture géographique
Global, dive sites recorded by DIVR users
| Enveloppe géographique | Sud Ouest [-36,595, -171,553], Nord Est [59,289, 178,129] |
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Couverture taxonomique
Marine taxa observed by recreational SCUBA divers and identified against the World Register of Marine Species (WoRMS); every scientificName carries a matching WoRMS LSID in scientificNameID. The dataset spans 1510 distinct taxa across multiple phyla. Reef-building and other corals are additionally recorded at the assemblage level (phylum Cnidaria) as the anchor taxon for coral-cover and coral-health measurements. Only the first 500 taxa are enumerated below; the complete list is in occurrence.txt.
| Phylum | Cnidaria |
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Couverture temporelle
| Date de début / Date de fin | 2025-06-03 / 2026-06-02 |
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Méthodes déchantillonnage
Records are produced by recreational divers logging a dive in the DIVR app, normally within a few hours of surfacing. One dive is one sampling event, carrying date, dive-site position, minimum and maximum depth, and dive duration in minutes as the sample size. samplingProtocol is "recreational scuba diving" throughout. There are no transects, no quadrats and no timed counts, and observers are not trained to a survey standard. Divers record species against a site-specific candidate list. A species offered by that list and not seen can be logged as a true absence, so occurrenceStatus carries both present and absent values rather than presence only. In this sample 1,910 records are present and 365 are absent. Where a diver cannot count reliably, abundance is captured as a SACFOR category instead of a count. Positions are the registered coordinates of the dive site, not a GPS fix taken in the water. coordinateUncertaintyInMeters is therefore a fixed nominal 100 m on every event and should be read as a site-level anchor rather than a measured uncertainty.
| Etendue de létude | Dive sites visited by DIVR users worldwide. This sample covers 548 dives at 394 distinct sites between 3 June 2025 and 2 June 2026, concentrated in Indonesia, the Philippines, Malaysia, Egypt and the Maldives. Coverage is opportunistic: it follows recreational diving activity rather than a sampling design, so it clusters at accessible and popular sites and within each region's diving season. There is no fixed station network and no revisit schedule. |
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Description des étapes de la méthode:
- 1. The diver logs the dive in the DIVR app: site, date, depth, duration and conditions. 2. Species are chosen from the DIVR catalogue, which is synchronised with the World Register of Marine Species. The accepted name and its WoRMS LSID are stored at the moment of entry, so scientificNameID is resolved at capture rather than reconciled afterwards. 3. Per-dive environmental readings (water temperature, horizontal visibility) and any coral assessment are attached to the event as extendedMeasurementOrFact rows. Coral cover and a 1-5 coral health rating are DIVR-local scales with no external vocabulary behind them; the remaining measurement types resolve to BODC P01 terms. 4. Records are exported as a Darwin Core Archive on the OBIS-ENV-DATA profile: Event core with Occurrence and extendedMeasurementOrFact extensions.
Métadonnées additionnelles
Export contains 548 dive events and 2275 occurrence records.
| Identifiants alternatifs | https://tryout.nlbif.nl/resource?r=divr-dive-observations |
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