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Metadata: 2012, Royal Haskoning DHV, Thanet Offshore Wind Farm, Fish and Benthic Survey
Abstract:
In order to monitor the abundance and composition of adult and juvenile fish and epi-benthic species within the area, an otter and beam trawl survey was undertaken within and adjacent to the operational Thanet offshore wind farm between the 3rd and 6th July 2012. The results of the survey have been compared with results from the April 2012 post-construction survey and the April and July 2005 pre-construction surveys. Overall in both sampling areas (control and wind farm), the total catch rates were highest in the post-construction surveys, with substantially higher post-construction catch rates recorded within the wind farm. Species diversity showed little change between the pre- and post-construction surveys, suggesting that the operational wind farm has not adversely affected the localised fish communities. The pre- and post-construction survey results potentially indicate that there may be an attraction effect with regards to lesser spotted dogfish (Scyliorhinus canicula) and thornback ray (Raja clavata). It should be noted however, that considerable variation was observed in the postconstruction survey results for these species, potentially suggesting that any changes may be due to natural variation or to the effects of factors unrelated to the wind farm construction and operation.
Data holder:
The Crown Estate
| Other details | ||
| Internal code | Internally assigned metadata identifier | 36324 |
| 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. | 2012, Royal Haskoning DHV, Thanet Offshore Wind Farm, Fish and Benthic Survey |
| Alternative title | The purpose of alternative title is to record any additional names by which the dataset may be known. | Fish and Benthic 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. | 9939288a-df5d-4728-a6a8-ab558e76d737 |
| Resource Identifier | This is the code assigned by the data owner. | TCE-2107 |
| 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. | series |
| Start date | This describes the date the resource starts. This may only be the year if month and day are not known | 2012-04-11 |
| End date | This describes the date the resource ends. This may only be the year if month and day are not known | 2012-07-06 |
| 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'. | notPlanned |
| Abstract | The abstract provides a clear and brief statement of the content of the resource. | In order to monitor the abundance and composition of adult and juvenile fish and epi-benthic species within the area, an otter and beam trawl survey was undertaken within and adjacent to the operational Thanet offshore wind farm between the 3rd and 6th July 2012. The results of the survey have been compared with results from the April 2012 post-construction survey and the April and July 2005 pre-construction surveys. Overall in both sampling areas (control and wind farm), the total catch rates were highest in the post-construction surveys, with substantially higher post-construction catch rates recorded within the wind farm. Species diversity showed little change between the pre- and post-construction surveys, suggesting that the operational wind farm has not adversely affected the localised fish communities. The pre- and post-construction survey results potentially indicate that there may be an attraction effect with regards to lesser spotted dogfish (Scyliorhinus canicula) and thornback ray (Raja clavata). It should be noted however, that considerable variation was observed in the postconstruction survey results for these species, potentially suggesting that any changes may be due to natural variation or to the effects of factors unrelated to the wind farm construction and operation. |
| Lineage | Lineage includes the background information, history of the sources of data, data quality statements and methods. | The proposed scope of works for the April 2012 adult and juvenile fish, and epibenthic survey are detailed below o Otter Trawl: ? Seven tows of approximately 20 minutes duration within the Thanet offshore wind farm and thirteen control tows in adjacent areas. o Otter Trawl Sample Analysis: ? Number of individuals and catch rate by species; ? Sex ratio by species; ? Spawning condition; o Finfish species (except herring & mackerel): Cefas Standard Maturity Key - Five Stage; o Herring: Cefas Herring Maturity Key – Nine Stage; o Mackerel: Cefas Mackerel Maturity Key – Six Stage; and o Ray and shark species: Cefas Standard Elasmobranch Maturity Key- Four Stage. ? Average length and length distribution by species; o Finfish & sharks: individual lengths (nearest cm below); o Rays: individual lengths and wing-width (nearest cm below); |
| Related keywords | ||
| Keyword | General subject area(s) associated with the resource, uses multiple controlled vocabularies | Fish taxonomy-related abundance per unit area of the bed |
| General subject area(s) associated with the resource, uses multiple controlled vocabularies | Fish biomass in water bodies | |
| General subject area(s) associated with the resource, uses multiple controlled vocabularies | Fishery characterisation | |
| General subject area(s) associated with the resource, uses multiple controlled vocabularies | Fish behaviour | |
| General subject area(s) associated with the resource, uses multiple controlled vocabularies | Habitat characterisation | |
| General subject area(s) associated with the resource, uses multiple controlled vocabularies | Habitat extent | |
| General subject area(s) associated with the resource, uses multiple controlled vocabularies | Post-Construction monitoring | |
| General subject area(s) associated with the resource, uses multiple controlled vocabularies | Operation and Maintenance | |
| General subject area(s) associated with the resource, uses multiple controlled vocabularies | Renewable Energy Lease area | |
| 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 | 51.568 |
| East | The eastern-most limit of the data resource in decimal degrees | 1.694 |
| South | The southern-most limit of the data resource in decimal degrees | 51.462 |
| West | The western-most limit of the data resource in decimal degrees | 1.568 |
| 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 | The Crown Estate | |
| Phone | +44 020 7851 5000 | |
| mde@thecrownestate.co.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 | The Crown Estate | |
| Phone | +44 020 7851 5000 | |
| enquiries@thecrownestate.co.uk | ||
| Role | The originator is the person or organisation who created, collected or produced the resource. | originator |
| Organisation name | Royal Haskoning (UK Head Office) | |
| Phone | +44 (0)1733 334455 | |
| info@peterborough.royalhaskoning.com | ||
| Role | The distributor is the person or organisation that distributes the resource. | distributor |
| Organisation name | The Crown Estate | |
| Phone | +44 020 7851 5000 | |
| enquiries@thecrownestate.co.uk | ||
| Role | The owner is the person or organisation that owns the resource. | owner |
| Organisation name | Vattenfall Wind Power Ltd | |
| unknown | ||
| Resource locators | ||
| Locator URL | Web address (URL) that links to the resource | https://www.marinedataexchange.co.uk/details/TCE-2107/summary |
| Web address (URL) that links to the resource | https://www.marinedataexchange.co.uk | |
| 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 | There will be no limitations when published on the Marine Data Exchange | |
| 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`. | http://www.marinedataexchange.co.uk/pages/terms-of-use.aspx | |
| 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. | Data Must be used in accordance to the Marine Data Exchange's Terms of Use: https://www.marinedataexchange.co.uk/content/info/terms-of-use |
| 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. | 2022-08-03 |
| Harvest date | The date which this record has been (re)harvested from the provider. | 2026-04-17 |
| Metadata date | The date when the content of this metadata record was last updated. | 2026-04-16 |
| 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 |