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Metadata: 1998 Centre for Environment, Fisheries and Aquaculture Science (CEFAS) Cross Sands broadscale macrobenthic survey (impacts of aggregate extraction).
Abstract:
Benthic marine species abundance data from an assessment of the cumulative impacts of aggregate extraction on seabed macro-invertebrate communities The purpose of this study was to determine whether there was any evidence of a large-scale cumulative impact on benthic macro-invertebrate communities as a result of the multiple sites of aggregate extraction located off Great Yarmouth in the southern North Sea.
Data holder:
Data Archive for Seabed Species and Habitats (DASSH)
Click on the red button for resource contact details:
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Use constraints:
Released under DASSH terms and conditions https://www.dassh.ac.uk/terms-and-conditions
Other details | ||
Internal code | Internally assigned metadata identifier | 3365 |
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. | 1998 Centre for Environment, Fisheries and Aquaculture Science (CEFAS) Cross Sands broadscale macrobenthic survey (impacts of aggregate extraction). |
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. | 53e1c770f5b08f9838536e17b049dbb3 |
Resource Identifier | This is the code assigned by the data owner. | MRMLN00400000081 |
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 | 1998-01-01 |
End date | This describes the date the resource ends. This may only be the year if month and day are not known | 1998-12-31 |
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'. | asNeeded |
Abstract | The abstract provides a clear and brief statement of the content of the resource. | Benthic marine species abundance data from an assessment of the cumulative impacts of aggregate extraction on seabed macro-invertebrate communities The purpose of this study was to determine whether there was any evidence of a large-scale cumulative impact on benthic macro-invertebrate communities as a result of the multiple sites of aggregate extraction located off Great Yarmouth in the southern North Sea. |
Lineage | Lineage includes the background information, history of the sources of data, data quality statements and methods. | An assessment of the cumulative impacts of aggregate extraction on seabed macro-invertebrate communities. The purpose of this study was to determine whether there was any evidence of a large-scale cumulative impact on benthic macro-invertebrate communities as a result of the multiple sites of aggregate extraction located off Great Yarmouth in the southern North Sea. Forty 0.1m2 Hamon grab samples were collected from across the region, both within and beyond the extraction area, and analysed for macrofauna and sediment particle size distribution in order to produce a regional description of the status of the seabed environment. In addition, the data were analysed in relation to the area of seabed impacted by dredging over the period 1993-1998. Areas subject to 'direct' impacts were determined through reference to annual electronic records of dredging activity and this information was then used to model the likely extent of areas potentially subject to 'indirect' ecological and geophysical impact. Results showed the study area to be characterised by sands in the northern half of the survey area, and sandy gravels in the south. The low diversity communities found across much of the survey area were typical of mobile sandy sediments. However, stations located in the southern half and northern extreme of the survey area tended to support higher numbers of species and individuals. This may be due to marginally enhanced stability arising from the higher proportion of gravel found in samples to the south of the extraction licenses and to the presence of Sabellaria spinulosa reef in the north. Analysis of data in relation to areas of predicted dredging impact revealed proportionally less gravel and more sand within the 'direct' impact zone, compared to the 'indirect' impact zone. Whilst multivariate analyses of macrofaunal data did not clearly discriminate between dredging impact zones, a comparison of univariate measures revealed significantly lower numbers of species and individuals in areas which have been subject to 'direct' dredging impacts in comparison with 'reference' areas. This provides good evidence of the near-field consequences of dredging. Values of these measures in the 'indirect' zone were intermediate, although not significantly different from the 'reference' zone. We conclude that, although the dominant influence on assemblages in the region is that of sediment instability induced by tidal currents, we cannot dismiss the possibility of a subsidiary influence of dredging activity in the near vicinity of the licensed block and further investigation is warranted. Methods: The work was carried out in 1998 using a 0.1m2 Hamon grab. Samples were seived over a 1mm mesh sieve. |
Additional information | This describes relevant references to the data e.g. reports, articles, websites plus other useful information not captured elsewhere. | Cooper, Boyd (2006) Cross sands broadscale survey |
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 | Geology | |
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 | Land use | |
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 | Zoobenthos generic abundance | |
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 | Shellfish abundance and biomass in water bodies | |
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 | Habitat characterisation | |
General subject area(s) associated with the resource, uses multiple controlled vocabularies | Industrial activity | |
General subject area(s) associated with the resource, uses multiple controlled vocabularies | Sediment grain size parameters | |
Geographical coverage | ||
North | The northern-most limit of the data resource in decimal degrees | 52.85 |
East | The eastern-most limit of the data resource in decimal degrees | 2.53 |
South | The southern-most limit of the data resource in decimal degrees | 52.18 |
West | The western-most limit of the data resource in decimal degrees | 1.7 |
Regional sea | Southern North Sea | |
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 Seabed Species and Habitats (DASSH) | |
Position name | Data Manager | |
Phone | 01752 633102 | |
Fax | 01752 633291 | |
Delivery point | Marine Biological Association of the UK, The Laboratory, Citadel Hill | |
Postal code | PL1 2PB | |
City | Plymouth | |
Role | The distributor is the person or organisation that distributes the resource. | distributor |
Organisation name | Data Archive for Seabed Species and Habitats (DASSH) | |
Position name | Data Manager | |
Phone | 01752 633102 | |
Fax | 01752 633291 | |
Delivery point | Marine Biological Association of the UK, The Laboratory, Citadel Hill | |
Postal code | PL1 2PB | |
City | Plymouth | |
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 | |
Individual name | Contracts office CEFAS | |
Position name | Officer | |
Phone | +44 (0)1502 562244 | |
Fax | +44 (0)1502 513865 | |
Delivery point | Pakefield Road | |
Postal code | NR33 OHT | |
City | Lowestoft | |
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 Seabed Species and Habitats (DASSH) | |
Position name | Data Manager | |
Phone | 01752 633102 | |
Fax | 01752 633291 | |
Delivery point | Marine Biological Association of the UK, The Laboratory, Citadel Hill | |
Postal code | PL1 2PB | |
City | Plymouth | |
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. | Released under DASSH terms and conditions https://www.dassh.ac.uk/terms-and-conditions |
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. | Released under DASSH terms and conditions |
Available data formats | ||
Data format | Format in which digital data can be provided for transfer | Database |
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. | 2006-12-31 |
Date of last revision | The most recent date that the resource was revised. | 2006-12-31 |
Date of creation | The date that the resource was created. | 1998-01-01 |
Harvest date | The date which this record has been (re)harvested from the provider. | 2024-04-14 |
Metadata date | The date when the content of this metadata record was last updated. | 2019-08-09 |
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 |