說明
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.
資料紀錄
此資源sampling event的資料已發佈為達爾文核心集檔案（DwC-A），其以一或多組資料表構成分享生物多樣性資料的標準格式。 核心資料表包含 38,092 筆紀錄。
亦存在 2 筆延伸集的資料表。延伸集中的紀錄補充核心集中紀錄的額外資訊。 每個延伸集資料表中資料筆數顯示如下。
此 IPT 存放資料以提供資料儲存庫服務。資料與資源的詮釋資料可由「下載」單元下載。「版本」表格列出此資源的其它公開版本，以便利追蹤其隨時間的變更。
版本
以下的表格只顯示可公開存取資源的已發布版本。
如何引用
研究者應依照以下指示引用此資源。:
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
權利
研究者應尊重以下權利聲明。:
此資料的發布者及權利單位為 Shark Trust。 This work is licensed under a Creative Commons Attribution (CC-BY 4.0) License.
GBIF 註冊
此資源已向GBIF註冊，並指定以下之GBIF UUID: 3410af95-8fc6-4122-876d-d2ce503910ca。 Shark Trust 發佈此資源，並經由Ocean Biodiversity Information System同意向GBIF註冊成為資料發佈者。
關鍵字
Samplingevent; oviparity; Egg; social participation; Chondrichthyes; Observation
聯絡資訊
- 元數據提供者 ●
- 出處 ●
- 連絡人
- Data Analyst
- 4 Creykes Court, 5 Craigie Drive
https://orcid.org/0000-0001-5108-2032
- 出處 ●
- 連絡人
- Senior Conservation Officer
地理涵蓋範圍
Global, with a participation bias from the British Isles.
| 界定座標範圍 | 緯度南界 經度西界 [-90, -180], 緯度北界 經度東界 [90, 180] |
|---|
分類群涵蓋範圍
Chondrichthyes, specifically Heterodontidae, Orectolobidae, Rajidae, Scyliorhinidae and Chimaeriformes
| Class | Chondrichthyes |
|---|---|
| Order | Chimaeriformes (chimaeras) |
| Family | Heterodontidae (bullhead sharks), Orectolobidae (carpet shark), Rajidae (skate), Scyliorhinidae (catsharks) |
時間涵蓋範圍
| 起始日期 / 結束日期 | 2003-01-01 / 2024-12-31 |
|---|
計畫資料
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.
| 計畫名稱 | Great Eggcase Hunt - global citizen science observations of chondrichthyian eggcases, 2003-present. |
|---|---|
| 辨識碼 | ST_GEH |
| 經費來源 | 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. |
| 研究區域描述 | Global, with a participation bias from the British Isles. |
| 研究設計描述 | 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. |
參與計畫的人員:
- 擁有者
取樣方法
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.
| 研究範圍 | 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. |
|---|---|
| 品質控管 | 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. |
方法步驟描述:
- NA
額外的詮釋資料
| 致謝 | 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. |
|---|---|
| Introduction | 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. |
| Getting Started | 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. |
| 目的 | This dataset displays the broad distribution, diversity of species, and relative abundance of sharks, skates and chimaera around the British Isles and further afield. |
| 維護說明 | Each subsequent year of data will be uploaded once internal QC has been completed. |
| 替代的識別碼 | https://www.dassh.ac.uk/ipt/resource?r=st_greateggcasehunt |