Descripción
This dataset details approved records from the Shark Trust's Great Eggcase Hunt, active since 2003. Comprised of citizen science observations, both on land and in-situ, records of eggcases from around the world have been complied to help better understand these oviparous species. Data comes from ad-hoc records, regular surveys and data uploads from partner organisations. Please note that not all records are verified, but this has been indicated in the extended Measurements or Facts.
Registros
Los datos en este recurso de evento de muestreo han sido publicados como Archivo Darwin Core(DwC-A), el cual es un formato estándar para compartir datos de biodiversidad como un conjunto de una o más tablas de datos. La tabla de datos del core contiene 38.092 registros.
también existen 2 tablas de datos de extensiones. Un registro en una extensión provee información adicional sobre un registro en el core. El número de registros en cada tabla de datos de la extensión se ilustra a continuación.
Este IPT archiva los datos y, por lo tanto, sirve como repositorio de datos. Los datos y los metadatos del recurso están disponibles para su descarga en la sección descargas. La tabla versiones enumera otras versiones del recurso que se han puesto a disposición del público y permite seguir los cambios realizados en el recurso a lo largo del tiempo.
Versiones
La siguiente tabla muestra sólo las versiones publicadas del recurso que son de acceso público.
¿Cómo referenciar?
Los usuarios deben citar este trabajo de la siguiente manera:
Allen H, Gordon C (2026). Great Eggcase Hunt - global citizen science observations of chondrichthyian eggcases. Version 1.2. Shark Trust. Samplingevent dataset. https://www.dassh.ac.uk/ipt/resource?r=st_greateggcasehunt&v=1.2
Derechos
Los usuarios deben respetar los siguientes derechos de uso:
El publicador y propietario de los derechos de este trabajo es Shark Trust. Esta obra está bajo una licencia Creative Commons de Atribución/Reconocimiento (CC-BY 4.0).
Registro GBIF
Este recurso ha sido registrado en GBIF con el siguiente UUID: 3410af95-8fc6-4122-876d-d2ce503910ca. Shark Trust publica este recurso y está registrado en GBIF como un publicador de datos avalado por Ocean Biodiversity Information System.
Palabras clave
Samplingevent; oviparity; Egg; social participation; Chondrichthyes; Observation
Contactos
- Proveedor De Los Metadatos ●
- Originador ●
- Punto De Contacto
- Data Analyst
- 4 Creykes Court, 5 Craigie Drive
https://orcid.org/0000-0001-5108-2032
- Originador ●
- Punto De Contacto
- Senior Conservation Officer
Cobertura geográfica
Global, with a participation bias from the British Isles.
| Coordenadas límite | Latitud Mínima Longitud Mínima [-90, -180], Latitud Máxima Longitud Máxima [90, 180] |
|---|
Cobertura taxonómica
Chondrichthyes, specifically Heterodontidae, Orectolobidae, Rajidae, Scyliorhinidae and Chimaeriformes
| Class | Chondrichthyes |
|---|---|
| Orden | Chimaeriformes (chimaeras) |
| Familia | Heterodontidae (bullhead sharks), Orectolobidae (carpet shark), Rajidae (skate), Scyliorhinidae (catsharks) |
Cobertura temporal
| Fecha Inicial / Fecha Final | 2003-01-01 / 2024-12-31 |
|---|
Datos del proyecto
The Shark Trust’s Great Eggcase Hunt engages communities in searching for, identifying, and recording the eggcases of sharks, skates and chimaera. This feeds a better understanding of these species, and which areas provide important habitats like egglaying grounds. Some citizen scientists regularly submit finds from their local beaches, while others may make a new shoreline discovery that leads them to discover what a mermaid’s purse really is. With over half a million eggcases recorded by the public over 20+ years, this dataset displays the broad distribution, diversity of species, and relative abundance of sharks, skates and chimaera around the British Isles and further afield. This data allows for an improved understanding of this important development stage of a sharks or skates life-cycle.
| Título | Great Eggcase Hunt - global citizen science observations of chondrichthyian eggcases, 2003-present. |
|---|---|
| Identificador | ST_GEH |
| Fuentes de Financiación | Historic funders include: Co-op, Countryside Council for Wales, Crown Estates, DTO Bio-Flow, Esmée Fairbairn Foundation, Museums and Galleries of Wales, National Lottery Heritage Fund, Natural England, Save Our Seas Foundation, Scottish Natural Heritage, Sea Changers and donations received through specific Shark Trust appeals. |
| Descripción del área de estudio | Global, with a participation bias from the British Isles. |
| Descripción del diseño | Eggcases can be recorded from anywhere around the world, whether recorded in-situ, or washed ashore on the beach, in the sand dunes or the car-park. Records are submitted on an ad-hoc basis, with some Eggcase Champions and partner organisations undertaking more regular, structured surveys. |
Personas asociadas al proyecto:
- Propietario
Métodos de muestreo
Records are gathered from citizen science observations submitted on an ad-hoc basis, with some Eggcase Champions and partner organisations undertaking more regular, structured surveys.
| Área de Estudio | Data is generated from citizen science observations. Many are ad-hoc finds, while some areas are more regularly surveyed using a standardised methodology. The majority of finds are from beach records, with some being in situ records observed while snorkelling or diving. |
|---|---|
| Control de Calidad | All data has been approved by a member of staff or via a user of the Community Verification Platform before publication. All records have undergone internal Quality Checks, with checks made against known species range and pin location checked and adjusted as required. |
Descripción de la metodología paso a paso:
- NA
Metadatos adicionales
| Agradecimientos | This dataset would not be possible without the contributions of all citizen scientists and organisations that have participated. Whether reporting one ad-hoc find or thousands of records over the span of years, every record has helped build towards this combined dataset. Data transformation and publication was funded by the European Union under the Horizon Europe Programme with Grant Agreement No. 101112823 (DTO-BioFlow) through an FSTP call. |
|---|---|
| Introducción | The Shark Trust’s Great Eggcase Hunt engages communities in searching for, identifying, and recording the eggcases of sharks, skates and chimaera. This feeds a better understanding of these species, and which areas provide important habitats like egglaying grounds. Some citizen scientists regularly submit finds from their local beaches, while others may make a new shoreline discovery that leads them to discover what a mermaid’s purse really is. With over half a million eggcases recorded by the public over 20+ years, this dataset displays the broad distribution, diversity of species, and relative abundance of sharks, skates and chimaera around the British Isles and further afield. This data allows for an improved understanding of this important development stage of a sharks or skates life-cycle. |
| Primeros pasos | This data is comprised of three tables: Event, Occurrence and extended measurements or facts. The field 'search effort' details the number of participants taking part in the survey as a measure of effort. However, this field has only been in use since 2022. The field 'locationRemarks' details whether the eggcase was seen developing in-situ underwater, or it was recorded on-shore - likely a spent eggcase. While every record is checked by a member of staff or through the Community Verification Platform, 'identificationVerificationStatus' flags whether the record had any evidence to prove the species ID. Accepted evidence types include a photograph, specimen or expert ID. |
| Propósito | This dataset displays the broad distribution, diversity of species, and relative abundance of sharks, skates and chimaera around the British Isles and further afield. |
| Descripción de mantenimiento | Each subsequent year of data will be uploaded once internal QC has been completed. |
| Identificadores alternativos | https://www.dassh.ac.uk/ipt/resource?r=st_greateggcasehunt |