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Metadata: 2005 Strategic Environmental Assessment SEA6 Technical Report - Cephalopods - An Overview of Cephalopods Relevant to the SEA 6 Area (Irish Sea)
Abstract:
This report is a contribution to the Strategic Environmental Assessment (SEA6) conducted by the Department of Trade and Industry (now Department of Energy and Climate Change). Cephalopods are short-lived molluscs, characterised by rapid growth rates, and are important predators and prey in oceanic and neritic environments. They are active predators at all stages of their life-cycle and generally regarded as opportunistic, taking a wide variety of prey. Cannibalism has been frequently recorded in cephalopod species. Cephalopods also sustain a number of marine top predators such as fish, birds and marine mammals, especially whales. Many species are powerful swimmers and carry out vast feeding and spawning migrations, thus influencing prey and predator communities strongly on a seasonal and regional basis. As cephalopods are important elements in food webs they interact with commercial fisheries of finfish. Evidence exists that fishing pressure has changed ecological conditions and shifts in community structures have occurred with cephalopod stocks slowly replacing predatory fish stocks. Their commercial significance to world fisheries is of relatively recent, but growing, importance. From a commercial point of view, the most important cephalopod species in the SEA6 area is Loligo forbesi, which is landed as a by-catch of the demersal trawl fishery (82 tonnes in 2002). But the species Alloteuthis subulata, although of no commercial value, has an important ecological role in the coastal food webs, since it is the most commonly recorded cephalopod species in the stomach contents of demersal fish in UK waters.
Data holder:
British Geological Survey (BGS)
| Other details | ||
| Internal code | Internally assigned metadata identifier | 6705 |
| 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. | 2005 Strategic Environmental Assessment SEA6 Technical Report - Cephalopods - An Overview of Cephalopods Relevant to the SEA 6 Area (Irish Sea) |
| 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. | aba64100-c146-4de3-e044-0003ba6f30bd |
| Resource Identifier | This is the code assigned by the data owner. | BGS_SEA_82 |
| 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 | 2005-01-01 |
| End date | This describes the date the resource ends. This may only be the year if month and day are not known | 2005-01-01 |
| Spatial resolution | This describes the spatial resolution of the dataset or the spatial limitations of the service. | 5 |
| 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'. | notPlanned |
| Abstract | The abstract provides a clear and brief statement of the content of the resource. | This report is a contribution to the Strategic Environmental Assessment (SEA6) conducted by the Department of Trade and Industry (now Department of Energy and Climate Change). Cephalopods are short-lived molluscs, characterised by rapid growth rates, and are important predators and prey in oceanic and neritic environments. They are active predators at all stages of their life-cycle and generally regarded as opportunistic, taking a wide variety of prey. Cannibalism has been frequently recorded in cephalopod species. Cephalopods also sustain a number of marine top predators such as fish, birds and marine mammals, especially whales. Many species are powerful swimmers and carry out vast feeding and spawning migrations, thus influencing prey and predator communities strongly on a seasonal and regional basis. As cephalopods are important elements in food webs they interact with commercial fisheries of finfish. Evidence exists that fishing pressure has changed ecological conditions and shifts in community structures have occurred with cephalopod stocks slowly replacing predatory fish stocks. Their commercial significance to world fisheries is of relatively recent, but growing, importance. From a commercial point of view, the most important cephalopod species in the SEA6 area is Loligo forbesi, which is landed as a by-catch of the demersal trawl fishery (82 tonnes in 2002). But the species Alloteuthis subulata, although of no commercial value, has an important ecological role in the coastal food webs, since it is the most commonly recorded cephalopod species in the stomach contents of demersal fish in UK waters. |
| Lineage | Lineage includes the background information, history of the sources of data, data quality statements and methods. | As part of the UK Department of Energy and Climate Change's Offshore Energy Strategic Environmental Assessment programme this report was prepared by M. Sacau, G. J. Pierce, G. Stowasser, J. Wang, and M. B. Santos of the School of Biological Sciences, University of Aberdeen. Data on cephalopod landings from the ICES area are compiled by the ICES Working Group on Cephalopod Fisheries and Life History (WGCEPH) on a country by country basis. The SEA 6 area corresponds to ICES fisheries subdivision VIIa, the Irish Sea, which is fished by Scottish, other UK (English/Welsh/Northern Irish), Irish, Isle of Man, French and Belgian fleets. Data for each of these fleets are collected separately and complied by the respective national fisheries laboratories. Fishery data provide the best available information on cephalopod distribution and abundance. Since most cephalopods are landed in the UK as a by-catch of trawling, landings per unit effort (LPUE) can be used as an index of species abundance and such data are available on a monthly, by ICES rectangle, basis. |
| Additional information | This describes relevant references to the data e.g. reports, articles, websites plus other useful information not captured elsewhere. | http://www.offshore-sea.org.uk/site/index.php |
| Related keywords | ||
| Keyword | General subject area(s) associated with the resource, uses multiple controlled vocabularies | NDGO0001 |
| Keyword title | NERC OAI Harvesting | |
| Keyword | General subject area(s) associated with the resource, uses multiple controlled vocabularies | Fish 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 | Species distribution | |
| General subject area(s) associated with the resource, uses multiple controlled vocabularies | crust | |
| General subject area(s) associated with the resource, uses multiple controlled vocabularies | sediment | |
| Geographical coverage | ||
| North | The northern-most limit of the data resource in decimal degrees | 55.3 |
| East | The eastern-most limit of the data resource in decimal degrees | -4 |
| South | The southern-most limit of the data resource in decimal degrees | 51.7 |
| West | The western-most limit of the data resource in decimal degrees | -6 |
| 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 | British Geological Survey (BGS) | |
| Individual name | Mary Mowat | |
| Phone | +44 (0)131 667 1000 | |
| Fax | +44 (0)131 668 4140 | |
| offshoredata@bgs.ac.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 | British Geological Survey (BGS) | |
| Individual name | Paul Henni | |
| Phone | +44 (0)131 667 1000 | |
| Delivery point | Murchison House, West Mains Road | |
| Postal code | EH9 3LA | |
| City | Edinburgh | |
| Country | UK | |
| offshoredata@bgs.ac.uk | ||
| Role | The originator is the person or organisation who created, collected or produced the resource. | originator |
| Organisation name | Department for Energy and Climate Change (DECC) | |
| Phone | +44 0300 060 4000 | |
| Fax | +44 (0) 1823 284077 | |
| Delivery point | Admiralty Way | |
| Postal code | SW1A 2HD | |
| City | London | |
| Country | UK | |
| enquiries@decc.gsi.gov.uk | ||
| Resource locators | ||
| Locator URL | Web address (URL) that links to the resource | http://www.bgs.ac.uk/data/sea/home.html |
| Locator name | Name of the web resource | Strategic Environmental Assessment (SEA) data portal |
| Locator function | Code that describes the function of the resource. ISO function code chosen from ISO 19115-1 Codelist | download |
| Dataset constraints | ||
| 20 Limitations on Public Access - Access constraints | intellectualPropertyRights | |
| 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. | The SEAs data were produced as part of the UK Department of Energy and Climate Change's Offshore Energy Strategic Environmental Assessment programme; Crown Copyright, all rights reserved. The DECC SEA must be acknowledged in any maps or publications that make use of the data. All the data files are freely available to the public. The Strategic Environmental Assessment (SEA) data portal provides free access to available data and reports which have been produced through the SEA process. The site is run and managed by BGS on behalf of the Department of Energy and Climate Change (DECC). Many files can be downloaded directly from this website. Those that are too large to download can be ordered via the website for postal delivery from BGS. BGS (NERC) has been contracted by DECC to publish SEA datasets on its behalf. All intellectual property rights (including , without limitation, copyrights, database rights and all other rights which subsist or may at any time in the future subsist in the Dataset(s)) in the Dataset(s) ('Intellectual Property Rights') are owned by DECC (formerly the Department of Trade and Industry, and the Department for Business, Enterprise and Regulatory Reform). BGS has been authorised by DECC to use SEA datasets for all purposes but on a 'not-for-profit basis'. BGS has been authorised by DECC to pass on SEA datasets to third parties so that they can use them for all purposes but on a 'not-for-profit' basis. |
| Available data formats | ||
| Data format | Format in which digital data can be provided for transfer | Documents |
| 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. | 2005-05-10 |
| 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. | 2011-08-30 |
| 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 | Version 2.3.5 |