© OpenStreetMap contributors
- Add External Layer
- Upload Shapefile
- Layer Tutorial
- Close
Use the checkbox () to show or hide a layer.
Use the radio buttons () to select a layer to use with the identify function.
- Layers
- Opacity
Available layers
(ctrl+c)
Search for marine data across UK organisations
- API
- How-To
- How-To
- About
- Contact MEDIN
- Share
Metadata: FishDAC - Scallop Survey (Scotland) - 2023 - West coast of Scotland
Abstract:
Survey to assess scallop stocks on the west coast of Scotland and collect biological information on relevant fish and shellfish species. Objectives 1. To carry out a survey of scallop stocks on the west coast of Scotland. 2. To age, measure and assess shell damage on all scallops caught. 3. To collect information on by-catch of other commercial fish and shellfish species. 4. To identify, quantify numbers, and damage assess starfish species in all dredge tows. 5. To collect whole scallops for heavy metal testing as part of the OSPAR assessment of hazardous substances in the marine environment. 6. To record and retain marine litter obtained during the dredging process (monitoring for UKMS). 7. To collect scallop shells to form part of a reference and training set for Scotland.
Data holder:
Scottish Government (Marine Scotland)
Use constraints:
no limitations to public access
| Other details | ||
| Internal code | Internally assigned metadata identifier | 3964 |
| Title | The title is used to provide a brief and precise description of the dataset such as 'Date', 'Originating organisation/programme', 'Location' and 'Type of survey'. All acronyms and abbreviations should be reproduced in full. | FishDAC - Scallop Survey (Scotland) - 2023 - West coast of Scotland |
| File Identifier | The File Identifier is a code, preferably a GUID, that is globally unique and remains with the same metadata record even if the record is edited or transferred between portals or tools. | Marine_Scotland_FishDAC_12585 |
| Resource Identifier | This is the code assigned by the data owner. | Marine_Scotland_FishDAC_12585 |
| Resource type | The resource type will likely be a dataset but could also be a series (collection of datasets with a common specification) or a service. | dataset |
| Start date | This describes the date the resource starts. This may only be the year if month and day are not known | 2025-03-24 |
| End date | This describes the date the resource ends. This may only be the year if month and day are not known | 2025-04-16 |
| Spatial resolution | This describes the spatial resolution of the dataset or the spatial limitations of the service. | 200.00 |
| Spatial resolution unit | This describes the unit of spatial resolution which for distance must be metres. | http://standards.iso.org/ittf/PubliclyAvailableStandards/ISO_19139_Schemas/resources/uom/gmxUom.xml#m |
| Frequency of updates | This describes the frequency with which the resource is modified or updated i.e. a monitoring programme that samples once per year has a frequency that is described as 'annually'. | Not Planned |
| Abstract | The abstract provides a clear and brief statement of the content of the resource. | Survey to assess scallop stocks on the west coast of Scotland and collect biological information on relevant fish and shellfish species. Objectives 1. To carry out a survey of scallop stocks on the west coast of Scotland. 2. To age, measure and assess shell damage on all scallops caught. 3. To collect information on by-catch of other commercial fish and shellfish species. 4. To identify, quantify numbers, and damage assess starfish species in all dredge tows. 5. To collect whole scallops for heavy metal testing as part of the OSPAR assessment of hazardous substances in the marine environment. 6. To record and retain marine litter obtained during the dredging process (monitoring for UKMS). 7. To collect scallop shells to form part of a reference and training set for Scotland. |
| Lineage | Lineage includes the background information, history of the sources of data, data quality statements and methods. | Dredge surveys of the major scallop grounds around Scotland have been carried out annually by Marine Directorate since the mid-1990’s. These surveys typically cover Shetland, the East coast and West coast of Scotland with the Clyde being added to the survey programme in 2019. The primary survey objective is to collect data for the provision of a catch at age index for use in the scallop regional stock assessments carried out by Marine Directorate. Method The scallop surveys have a fixed station design. The station locations were originally determined with reference to British Geological Survey charts to locate sediments suitable for scallops and also using knowledge of the fishing grounds contributed by skippers fishing at the time when the surveys first took place. There are around 110 fixed stations which have been historically fished on the West coast, however, these are kept under review and not all are surveyed every year due to time constraints, bad weather, renewable energy activity, and closed areas. A typical West coast scallop survey of this duration with favourable weather conditions would aim to survey between 70 to 80 of the stations. Two dredge arrays are fished (one either side of the vessel). One array consists of standard commercial spring-loaded Newhaven type dredges (76 cm wide, 9 tooth bar, with 8 cm internal diameter belly rings, Type A, referred to as S9 fished from the starboard side). The second array consists of smaller configuration sampling dredges with 11 teeth and smaller diameter belly rings (Type B), more similar to commercial gear for queen scallops (Aequipecten opercularis) (76 cm wide, 11 tooth bar, with 6 cm internal diameter belly rings, referred as P11 fished from the port side). This side of gear is configured to catch smaller scallops compared to the commercial dredges. At each station the dredges are towed at a speed of about 2.5 knots for approximately 30 minutes with both sides of dredges on the seabed. All king scallops caught are aged and measured (length to the 0.5 cm below) in accordance with the Marine Directorate scallop aging standard operating procedure and damage assessed in accordance with the damage index¬¬ (Veale et al., 2001). The total width of dredges used in the survey has changed over the survey time series. Catch rate data are therefore further standardised and expressed as numbers caught per hour per metre dredge width (N hr-1 m-1). Bycatch, including starfish, are collected, identified, measured, sexed and damage assessed, with the same damage index referenced for the scallops, where appropriate. Any additional requests are also carried out if there is scope to do so. |
| Related keywords | ||
| Keyword | General subject area(s) associated with the resource, uses multiple controlled vocabularies | Marine Environmental Data and Information Network |
| General subject area(s) associated with the resource, uses multiple controlled vocabularies | Fish and shellfish catch statistics | |
| General subject area(s) associated with the resource, uses multiple controlled vocabularies | Fishing by-catch | |
| General subject area(s) associated with the resource, uses multiple controlled vocabularies | Shellfish abundance and biomass in water bodies | |
| General subject area(s) associated with the resource, uses multiple controlled vocabularies | Habitats and biotopes | |
| General subject area(s) associated with the resource, uses multiple controlled vocabularies | Species distribution | |
| Geographical coverage | ||
| North | The northern-most limit of the data resource in decimal degrees | 58.5 |
| East | The eastern-most limit of the data resource in decimal degrees | -5 |
| South | The southern-most limit of the data resource in decimal degrees | 55 |
| West | The western-most limit of the data resource in decimal degrees | -8 |
| Regional sea | 45E4 | |
| 44E4 | ||
| 42E4 | ||
| 41E4 | ||
| 40E4 | ||
| 39E4 | ||
| 45E3 | ||
| 44E3 | ||
| 43E3 | ||
| 42E3 | ||
| 41E3 | ||
| 40E3 | ||
| 43E2 | ||
| 42E2 | ||
| Responsible organisations | ||
| Role | The point of contact is person or organisation with responsibility for the creation and maintenance of the metadata for the resource. | pointOfContact |
| Organisation name | Scottish Government (Marine Scotland) | |
| Phone | +44 (0)300 244 4000 | |
| marinescotland@gov.scot | ||
| Role | The point of contact is person or organisation with responsibility for the creation and maintenance of the metadata for the resource. | pointOfContact |
| Organisation name | Scottish Government (Marine Scotland) | |
| Phone | +44 (0)300 244 4000 | |
| Delivery point | Mailpoint 11, Area 1B South, Victoria Quay | |
| Postal code | EH6 6QQ | |
| City | Edinburgh | |
| Country | United Kingdom | |
| marinescotland@gov.scot | ||
| Role | The custodian is the person or organisation that accepts responsibility for the resource and ensures appropriate care and maintenance. If a dataset has been lodged with a Data Archive Centre for maintenance then this organisation is be entered here. | custodian |
| Organisation name | Scottish Government (Marine Scotland) | |
| Phone | +44 (0)300 244 4000 | |
| Delivery point | Mailpoint 11, Area 1B South, Victoria Quay | |
| Postal code | EH6 6QQ | |
| City | Edinburgh | |
| Country | United Kingdom | |
| marinescotland@gov.scot | ||
| Role | The distributor is the person or organisation that distributes the resource. | distributor |
| Organisation name | Scottish Government (Marine Scotland) | |
| Phone | +44 (0)300 244 4000 | |
| Delivery point | Mailpoint 11, Area 1B South, Victoria Quay | |
| Postal code | EH6 6QQ | |
| City | Edinburgh | |
| Country | United Kingdom | |
| marinescotland@gov.scot | ||
| Role | The originator is the person or organisation who created, collected or produced the resource. | originator |
| Organisation name | Marine Scotland | |
| Delivery point | 375 Victoria Road | |
| Postal code | AB119DB | |
| City | Aberdeen | |
| Country | United Kingdom | |
| Shona.kinnear@gov.scot | ||
| Resource locators | ||
| Locator URL | Web address (URL) that links to the resource | none |
| Locator function | Code that describes the function of the resource. ISO function code chosen from ISO 19115-1 Codelist | offlineAccess |
| Dataset constraints | ||
| 20 Limitations on Public Access - Access constraints | otherRestrictions | |
| 20 Limitations on Public Access - Other constraints | This states any limitations on access to the data and uses free text. | no limitations to public access |
| 21 Conditions for Access and Use - Use limitation | This states any constraints on use of the data. Multiple conditions can be recorded for different parts of the data resource. If no conditions apply, then `No condtions apply` is recorded. This uses free text. | Contains information from the Scottish Government (Marine Scotland) licensed under the Open Government Licence |
| Version info | ||
| Date of publication | The publication date of the resource or if previously unpublished the date that the resource was made publicly available via the MEDIN network. | 2025-08-01 |
| Harvest date | The date which this record has been (re)harvested from the provider. | 2026-09-27 |
| Metadata date | The date when the content of this metadata record was last updated. | 2026-08-20 |
| Metadata standard name | The name of the metadata standard used to create this metadata | MEDIN Discovery Metadata |
| Metadata standard version | The version of the MEDIN Discovery Metadata Standard used to create the metadata record | Version 2.3.7 |