DIVR Citizen Science Dive Observations — DEMO SAMPLE (synthetic)

Registros de Dados

Os dados deste recurso de evento de amostragem foram publicados como um Darwin Core Archive (DwC-A), que é o formato padronizado para compartilhamento de dados de biodiversidade como um conjunto de uma ou mais tabelas de dados. A tabela de dados do núcleo contém 548 registros.

Também existem 2 tabelas de dados de extensão. Um registro de extensão fornece informações adicionais sobre um registro do núcleo. O número de registros em cada tabela de dados de extensão é ilustrado abaixo.

This IPT archives the data and thus serves as the data repository. The data and resource metadata are available for download in the downloads section. The versions table lists other versions of the resource that have been made publicly available and allows tracking changes made to the resource over time.

Versões

A tabela abaixo mostra apenas versões de recursos que são publicamente acessíveis.

Como citar

Pesquisadores deveriam citar esta obra da seguinte maneira:

DIVR (2026): DIVR Citizen Science Dive Observations. Sampling-event dataset. DIVR, the Netherlands. Distributed under CC-BY 4.0. https://www.divr-connect.com

Direitos

Pesquisadores devem respeitar a seguinte declaração de direitos:

O editor e o detentor dos direitos deste trabalho é Netherlands Biodiversity Information Facility (NLBIF). This work is licensed under a Creative Commons Attribution (CC-BY 4.0) License.

GBIF Registration

Este recurso foi registrado no GBIF e atribuído ao seguinte GBIF UUID: a5e45713-e815-4cae-ba0d-7a8b2cf2a3d4.  Netherlands Biodiversity Information Facility (NLBIF) publica este recurso, e está registrado no GBIF como um publicador de dados aprovado por Netherlands Biodiversity Information Facility.

Palavras-chave

Samplingevent

Contatos

Cobertura Geográfica

Global, dive sites recorded by DIVR users

Cobertura Taxonômica

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.

Cobertura Temporal

Métodos de Amostragem

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.

Descrição dos passos do método:

1. 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.

Metadados Adicionais