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Metadata: Structure and function assessment of macrobenthic communities from north of the Dogger Bank, the Oyster Ground and at Sean Gas Field, in 2007
Abstract:
Four infaunal replicate samples were collected at each site using 0.1 m2 Nioz corers (diameter of approximately 30 cm) were sieved on a 1mm mesh sieve, the sieve remains were then sorted and preserved following the methodology described by Boyd (2002). On return, to the laboratory all the infaunal samples were identified to the lowest taxonomic level as possible, counted and weighted. Five epifaunal replicate samples were collected at each site using 2 m beam trawls during each of the five research cruises. Each trawl was conducted at a constant speed (~2 knots per minute) and sampled an area of seabed of approximately 400 m2. Once on board, the contents of the trawl were sieved over 5mm mesh and all retained individuals were identified, counted and weighed. In some cases, the very high numbers of some groups (e.g. brittle stars, shrimps, and small fish) needed sub-sampling before counting and weighting. The raw abundance and biomass data for both the infauna (from the cores) and epifauna (trawls) were scaled to values per m2. As some taxa were present in both datasets, taxa which were more appropriately classed as infauna and/or their densities were better estimated via a corer were classed as infauna and removed from the trawl data. Accordingly, those taxa which were generally considered as epifaunal (and their numbers and biomasses better estimated using a trawl) were considered as epifaunal and/or their densities more suitably estimated using a trawl were reported as epifauna.
Data holder:
Centre for Environment, Fisheries and Aquaculture Science, Lowestoft Laboratory (CEFAS)
Other details | ||
Internal code | Internally assigned metadata identifier | 10406 |
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. | Structure and function assessment of macrobenthic communities from north of the Dogger Bank, the Oyster Ground and at Sean Gas Field, in 2007 |
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. | CEFAS974575b6-6069-478c-a286-5dfeb2f4e15a |
Resource Identifier | This is the code assigned by the data owner. | CEFAS3573 |
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 | 2007-02-01 |
End date | This describes the date the resource ends. This may only be the year if month and day are not known | 2007-10-31 |
Spatial resolution | This describes the spatial resolution of the dataset or the spatial limitations of the service. | 0.1 |
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'. | notPlanned |
Abstract | The abstract provides a clear and brief statement of the content of the resource. | Four infaunal replicate samples were collected at each site using 0.1 m2 Nioz corers (diameter of approximately 30 cm) were sieved on a 1mm mesh sieve, the sieve remains were then sorted and preserved following the methodology described by Boyd (2002). On return, to the laboratory all the infaunal samples were identified to the lowest taxonomic level as possible, counted and weighted. Five epifaunal replicate samples were collected at each site using 2 m beam trawls during each of the five research cruises. Each trawl was conducted at a constant speed (~2 knots per minute) and sampled an area of seabed of approximately 400 m2. Once on board, the contents of the trawl were sieved over 5mm mesh and all retained individuals were identified, counted and weighed. In some cases, the very high numbers of some groups (e.g. brittle stars, shrimps, and small fish) needed sub-sampling before counting and weighting. The raw abundance and biomass data for both the infauna (from the cores) and epifauna (trawls) were scaled to values per m2. As some taxa were present in both datasets, taxa which were more appropriately classed as infauna and/or their densities were better estimated via a corer were classed as infauna and removed from the trawl data. Accordingly, those taxa which were generally considered as epifaunal (and their numbers and biomasses better estimated using a trawl) were considered as epifaunal and/or their densities more suitably estimated using a trawl were reported as epifauna. |
Lineage | Lineage includes the background information, history of the sources of data, data quality statements and methods. | Five research cruises were conducted (during February, April, May, September and October, 2007) at three study sites, north of the Dogger Bank (hereafter as DB) (55.68 º N, 2.28 º E), the Oyster Ground (54.41º N, 4.04º E) (hereafter as OG) and at Sean Gas Field (hereafter SGF) (53.17º N, 2.81º E). Previous research conducted at the sites, have shown that these sites have representative characteristics of larger regions with similar water column and seabed attributes, considering them as eco-hydrodynamic regions in the southern and central North Sea (see van der Molen et al., 2012; Painting and Foster, 2013). At each site four replicate samples were collected with a 0.1 m2 Nioz corer to sample benthic infauna and sediments. From each Nioz corer, a small corer (internal diameter of 5.5 cm) was used to obtain sediments for the analysis of particle size, porosity, chlorophyll a/phaeopigment and organic carbon analysis. These cores were sliced at 0.5 to 1 cm intervals up to 10cm depth and stored at -20°C. |
Related keywords | ||
Keyword | General subject area(s) associated with the resource, uses multiple controlled vocabularies | Benthos |
General subject area(s) associated with the resource, uses multiple controlled vocabularies | Biota abundance, biomass and diversity | |
General subject area(s) associated with the resource, uses multiple controlled vocabularies | Fauna abundance per unit area of the bed | |
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 | Benthic boundary | |
General subject area(s) associated with the resource, uses multiple controlled vocabularies | Sediment | |
General subject area(s) associated with the resource, uses multiple controlled vocabularies | Marine Environmental Data and Information Network | |
Geographical coverage | ||
North | The northern-most limit of the data resource in decimal degrees | 52.4595 |
East | The eastern-most limit of the data resource in decimal degrees | 1.74086 |
South | The southern-most limit of the data resource in decimal degrees | 52.4581 |
West | The western-most limit of the data resource in decimal degrees | 1.73881 |
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 | Centre for Environment, Fisheries and Aquaculture Science, Lowestoft Laboratory (CEFAS) | |
Delivery point | Cefas Lowestoft Laboratory, Pakefield Road | |
Postal code | NR33 0HT | |
City | Lowestoft | |
Administrative area | Suffolk | |
Country | UK | |
Role | The originator is the person or organisation who created, collected or produced the resource. | originator |
Organisation name | Centre for Environment, Fisheries and Aquaculture Science, Lowestoft Laboratory (CEFAS) | |
Delivery point | Cefas Lowestoft Laboratory, Pakefield Road | |
Postal code | NR33 0HT | |
City | Lowestoft | |
Administrative area | Suffolk | |
Country | 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 | Centre for Environment, Fisheries and Aquaculture Science, Lowestoft Laboratory (CEFAS) | |
Delivery point | Cefas Lowestoft Laboratory, Pakefield Road | |
Postal code | NR33 0HT | |
City | Lowestoft | |
Administrative area | Suffolk | |
Country | UK | |
Role | The distributor is the person or organisation that distributes the resource. | distributor |
Organisation name | Centre for Environment, Fisheries and Aquaculture Science, Lowestoft Laboratory (CEFAS) | |
Delivery point | Cefas Lowestoft Laboratory, Pakefield Road | |
Postal code | NR33 0HT | |
City | Lowestoft | |
Administrative area | Suffolk | |
Country | UK | |
Role | The owner is the person or organisation that owns the resource. | owner |
Organisation name | Department for Environment, Food and Rural Affairs (DEFRA) | |
Resource locators | ||
Locator URL | Web address (URL) that links to the resource | https://data.cefas.co.uk/view/3573 |
Locator name | Name of the web resource | Cefas Data Portal |
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 | noLimitations | |
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 | http://standards.iso.org/ittf/PubliclyAvailableStandards/ISO_19139_Schemas/resources/codelist/gmxCodelists.xml#MD_RestrictionCode | |
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. | 2015-12-04 |
Date of last revision | The most recent date that the resource was revised. | 2023-09-11 |
Date of creation | The date that the resource was created. | 2015-12-04 |
Harvest date | The date which this record has been (re)harvested from the provider. | 2024-04-21 |
Metadata date | The date when the content of this metadata record was last updated. | 2023-09-11 |
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 | 3.1.1 |