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Metadata: DAERA Estuarine Fish Survey
Abstract:
The DAERA estuarine fish survey is an annual assessment of fish communities in seven river estuaries in Northern Ireland. Data is collected primarily for the purposes of reporting to Water Framework Directive (WFD).
Data holder:
Department of Agriculture, Environment and Rural Affairs
Use constraints:
No restriction on access
| Other details | ||
| Internal code | Internally assigned metadata identifier | 809 |
| 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. | DAERA Estuarine Fish Survey |
| 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. | 32efd6956089ba3e0d82f3b0ff3b7e4d |
| Resource Identifier | This is the code assigned by the data owner. | DAERA-FSH |
| 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 | 2017-01-01 |
| End date | This describes the date the resource ends. This may only be the year if month and day are not known | 2020-02-20 |
| Spatial resolution | This describes the spatial resolution of the dataset or the spatial limitations of the service. | inapplicable |
| 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'. | annually |
| Abstract | The abstract provides a clear and brief statement of the content of the resource. | The DAERA estuarine fish survey is an annual assessment of fish communities in seven river estuaries in Northern Ireland. Data is collected primarily for the purposes of reporting to Water Framework Directive (WFD). |
| Lineage | Lineage includes the background information, history of the sources of data, data quality statements and methods. | The ichthyofauna of each transitional water is sampled using a variety of methods. These include seine netting, fyke netting and beam trawling. This multimethod approach is adopted to ensure that all representative habitats and species are sampled within each estuary. All netting is conducted from a 3.4 m inflatable boat equipped with a 15 hp outboard engine. The seine net is 30 m long by 2 m deep with a 14 mm mesh body and a 5 m long x 3 m deep central panel of 6.5 mm mesh. Seine netting is limited to unobstructed areas with gently sloping banks and is typically deployed in waters less than 1.5 m. Where possible, seine netting is conducted during the two hour period either side of low tide. A fleet of double fyke nets are set in each system. Each trap is 0.5 m high, 2.5 m long with a 10 mm mesh cod end and is joined by a 6 m long x 15 mm mesh leader. The fyke nets are deployed in deeper waters by boat and are laid diagonally across the flow of the river. They are anchored out of the main channel to avoid passing boat traffic and are retrieved after 24 hours. A lightweight shoeless beam trawl is used to sample benthic and demersal fishes. The mouth of the net is 1.5 m wide with a height of 0.5 m, the body of the net is constructed of 14 mm mesh and is 3 m long, tapering to a width of 0.5 m. A 1.0 m long x 0.5 m wide cod end of 6.5 mm mesh is attached to the end of the net. The beam trawl is towed 20 m behind the boat and is deployed and retrieved by hand. Towing speed is between 1 and 2 knots with each tow lasting approximately 5 minutes and covering a distance of between 150 and 300 m. Where possible, all fishes are processed alive in the field and returned to the water. Specimens are identified, measured (mm Total Length (TL)), and weighed (g) before being released. Specimens that cannot be identified in the field are placed in labelled plastic bags and kept cool for transport to the laboratory where they are frozen. Fishes are identified in the laboratory at a later date by reference to published taxonomy texts such as Wheeler (1969), The Fishes of the British Isles and North Western Europe. Scientific and common names of fishes follow those provided in Maitland and Herdson (2009), A Key to the Marine and Freshwater Fishes of Britain and Ireland.All species are counted, and batch weighed to the nearest 0.1 g. Specimens are also measured (mm TL) and grouped into 10 mm size classes. Where large numbers of a particular species are captured, a sub-sample of at least 50 specimens are measured and weighed, the remaining sample is then batch weighed and the total number of individuals estimated using an average specimen weight. The total number of species and their numerical contribution to the total catch is determined for each transitional water. Competency of taxonomic identification is assessed twice yearly by completing the NMBAQC fish component of the ring test programme. |
| 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 | Species distribution |
| General subject area(s) associated with the resource, uses multiple controlled vocabularies | Fish abundance in water bodies | |
| Geographical coverage | ||
| North #1 | The northern-most limit of the data resource in decimal degrees | 55.3492 |
| East #1 | The eastern-most limit of the data resource in decimal degrees | -5.2739 |
| South #1 | The southern-most limit of the data resource in decimal degrees | 53.9639 |
| West #1 | The western-most limit of the data resource in decimal degrees | -7.3833 |
| Regional sea | Irish Sea | |
| Minches & Western Scotland | ||
| 39E2 | ||
| 37E3 | ||
| 39E3 | ||
| 37E4 | ||
| 38E4 | ||
| infralittoral | ||
| littoral | ||
| 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 | Department of Agriculture, Environment and Rural Affairs | |
| Position name | Data contact | |
| Marine.InfoRequests@daera-ni.gov.uk | ||
| Role | The distributor is the person or organisation that distributes the resource. | distributor |
| Organisation name | Department of Agriculture, Environment and Rural Affairs | |
| Position name | Data contact | |
| Marine.InfoRequests@daera-ni.gov.uk | ||
| Role | The originator is the person or organisation who created, collected or produced the resource. | originator |
| Organisation name | Department of Agriculture, Environment and Rural Affairs | |
| Position name | Data contact | |
| Marine.InfoRequests@daera-ni.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 | Department of Agriculture, Environment and Rural Affairs | |
| Position name | Data contact | |
| Marine.InfoRequests@daera-ni.gov.uk | ||
| Resource locators | ||
| Locator URL | Web address (URL) that links to the resource | http://www.opendatani.gov.uk/dataset/13c01e4a-0f14-4192-b6c7-08dbdd4a79dc/resource/0ab1f3dd-5f71-4e78-ae7f-340381cea4ca/download/daera-estuarine-fish-survey-data---2018.ods |
| Locator name | Name of the web resource | Online dataset |
| Locator URL | Web address (URL) that links to the resource | http://www.opendatani.gov.uk |
| Locator name | Name of the web resource | Open Data NI Portal |
| 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 restriction on 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. | Data is freely available for research or commercial use providing that the originators are acknowledged in any publications produced. |
| 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. | 2019-02-20 |
| Date of last revision | The most recent date that the resource was revised. | 2019-02-20 |
| Date of creation | The date that the resource was created. | 2019-02-19 |
| Harvest date | The date which this record has been (re)harvested from the provider. | 2026-04-12 |
| Metadata date | The date when the content of this metadata record was last updated. | 2020-02-20 |
| Metadata standard name | The name of the metadata standard used to create this metadata | MEDIN Discovery metadata standard |
| Metadata standard version | The version of the MEDIN Discovery Metadata Standard used to create the metadata record | 2.3.8 |