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Metadata: 2017-2018 Benthic bycatch from dredge surveys for seed mussel (Mytilus edilus) stock assessment, Outer Ards, Northern Ireland
Abstract:
This dataset contains presence/absence information of infaunal bycatch from seed mussel stock (Mytilus edulis) assessment surveys off the Outer Ards Peninsula in Northern Ireland. The seed mussel survey is carried out each year and this particular dataset contains the bycatch information from initial ground truthing (dredge) on these surveys from 2017-02 to 2018-07. The dredge samples are taken from the DAERA Fisheries Protection Vessel Queen of Ulster (formally Banrion Uladh). The main aim of the seed mussel survey is to carry out a stock assessment of seed mussel in areas that are fished for these mussels. The stock assessment surveys use acoustic ground discrimination system (AGDS), dredge surveys (ground truthing) and then in areas where there appears to be high levels of seed mussel an underwater video camera sledge is towed from the RV Corystes for more ground truthing. In total there were 42 dredge tows carried out that contained bycatch in this dataset. It is important to note that the information in this dataset was not the key focus of these surveys. The most common species found were Laminaria species.
Data holder:
Data Archive for Marine Species and Habitats
| Other details | ||
| Internal code | Internally assigned metadata identifier | 11320 |
| 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. | 2017-2018 Benthic bycatch from dredge surveys for seed mussel (Mytilus edilus) stock assessment, Outer Ards, Northern Ireland |
| 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. | 3770386de4ddb72452f718b1bf4732c5 |
| Resource Identifier | This is the code assigned by the data owner. | DASSHSE00000053 |
| 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 | 2017-02-21 |
| End date | This describes the date the resource ends. This may only be the year if month and day are not known | 2018-07-25 |
| Spatial resolution | This describes the spatial resolution of the dataset or the spatial limitations of the service. | 10 |
| Spatial resolution unit | This describes the unit of spatial resolution which for distance must be metres. | urn:ogc:def:uom:EPSG::9001 |
| 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'. | continual |
| Abstract | The abstract provides a clear and brief statement of the content of the resource. | This dataset contains presence/absence information of infaunal bycatch from seed mussel stock (Mytilus edulis) assessment surveys off the Outer Ards Peninsula in Northern Ireland. The seed mussel survey is carried out each year and this particular dataset contains the bycatch information from initial ground truthing (dredge) on these surveys from 2017-02 to 2018-07. The dredge samples are taken from the DAERA Fisheries Protection Vessel Queen of Ulster (formally Banrion Uladh). The main aim of the seed mussel survey is to carry out a stock assessment of seed mussel in areas that are fished for these mussels. The stock assessment surveys use acoustic ground discrimination system (AGDS), dredge surveys (ground truthing) and then in areas where there appears to be high levels of seed mussel an underwater video camera sledge is towed from the RV Corystes for more ground truthing. In total there were 42 dredge tows carried out that contained bycatch in this dataset. It is important to note that the information in this dataset was not the key focus of these surveys. The most common species found were Laminaria species. |
| Lineage | Lineage includes the background information, history of the sources of data, data quality statements and methods. | This dataset contains information on the presence and absence of bycaught infauna species during the stock assessment surveys of seed mussel (Mytilus edulis) in the Outer Ards Peninsula in Northern Ireland in 2017 and 2018. As this dataset contains bycatch data it is important to note that the infauna were not the key aim of the survey. The seed mussel stock assessment is carried out with the aim of providing a comprehensive assessment of the state of the seed mussel beds which are commercially fished. Initially a RoxAnn acoustic ground discrimination system (AGDS) using a 200kHz transducer collected data on the roughness and hardness of the substrate at a save rate of 1s. This acoustic device was deployed off the Fisheries Protection Vessel Queen of Ulster (formally Banrion Uladh). A dredge survey was then carried out from the Queen of Ulster using a custom oyster dredge (1.5m x 0.5m) following the AFBI Standard Operating Procedure (SOP) Collection and recording of benthic dredge samples. In total there were 42 dredge tows carried out that contained bycatch in this dataset. The bycaught species were identified as accurately as possible and recorded (presence/ absence). A towed epibenthic video sledge was used from the RV Corystes to provide further ground truthing information for the stock assessment (this information is not present in this dataset). A Konsberg video camera, halogen lights and point lasers (for scaling) were all attached to the camera sledge and towed at an estimated speed of 0.5-0.8 knots. The footage was reviewed by experienced marine biologists. |
| 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 | NDGO0005 | |
| Keyword title | data.gov.uk | |
| Keyword | 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 | Fishing by-catch | |
| General subject area(s) associated with the resource, uses multiple controlled vocabularies | Zoobenthos generic abundance | |
| General subject area(s) associated with the resource, uses multiple controlled vocabularies | Marine | |
| Geographical coverage | ||
| North | The northern-most limit of the data resource in decimal degrees | 54.7249 |
| East | The eastern-most limit of the data resource in decimal degrees | -4.937 |
| South | The southern-most limit of the data resource in decimal degrees | 54.2648 |
| West | The western-most limit of the data resource in decimal degrees | -5.5413 |
| Regional sea | 38E4 | |
| 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 | Data Archive for Marine Species and Habitats | |
| Individual name | Data Archive for Marine Species and Habitats (DASSH) | |
| Phone | 01752426237 | |
| dassh.enquiries@mba.ac.uk | ||
| Role | The owner is the person or organisation that owns the resource. | owner |
| Organisation name | Agri-Food and Biosciences Institute (AFBI) | |
| Individual name | Catherine Gibson | |
| Catherine.Gibson@afbini.gov.uk | ||
| 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 | Data Archive for Marine Species and Habitats | |
| Individual name | Data Archive for Marine Species and Habitats (DASSH) | |
| Position name | Data Manager | |
| Phone | 01752426237 | |
| dassh.enquiries@mba.ac.uk | ||
| Role | The originator is the person or organisation who created, collected or produced the resource. | originator |
| Organisation name | Agri-Food and Biosciences Institute (AFBI) | |
| Individual name | Catherine Gibson | |
| Catherine.Gibson@afbini.gov.uk | ||
| Role | The distributor is the person or organisation that distributes the resource. | distributor |
| Organisation name | Data Archive for Marine Species and Habitats | |
| Individual name | Data Archive for Marine Species and Habitats (DASSH) | |
| Position name | Data Manager | |
| Phone | 01752426237 | |
| dassh.enquiries@mba.ac.uk | ||
| Resource locators | ||
| Locator URL | Web address (URL) that links to the resource | https://doi.org/10.17031/uknai3 |
| Locator name | Name of the web resource | DOI Link |
| Dataset constraints | ||
| 20.1 Limitations on Public Access - Access constraints | This states `otherRestrictions` from ISO vocabulary RestrictionCode and is an INSPIRE/GEMINI requirement. | otherRestrictions |
| 20.2 Limitations on Public Access - Other constraints | This states any limitations on access to the data. Multiple occurences are allowed here. One entry shall be from the INSPIRE Metadata registry and the other free text should be part of the resource `Have specific limitations`. | Open access; CC-BY (https://creativecommons.org/licenses/by/4.0/) |
| 21.1 Conditions for Access and Use - Use constraints | This states `otherRestrictions` from ISO vocabulary RestrictionCode and is an INSPIRE/GEMINI requirement. | otherRestrictions |
| 21.2 Conditions for Access and Use - Other constraints | 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. | Open access |
| Available data formats | ||
| Data format | Format in which digital data can be provided for transfer | Delimited |
| 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. | 2019-01-08 |
| Date of last revision | The most recent date that the resource was revised. | 2021-11-10 |
| Date of creation | The date that the resource was created. | 2018-07-25 |
| Harvest date | The date which this record has been (re)harvested from the provider. | 2026-04-19 |
| Metadata date | The date when the content of this metadata record was last updated. | 2025-05-27 |
| Metadata standard name | The name of the metadata standard used to create this metadata | MEDIN |
| Metadata standard version | The version of the MEDIN Discovery Metadata Standard used to create the metadata record | 3.1.2 |