Assessment of Sublittoral Epibenthic Rock Communities and Species Following the Sea Empress Oil Spill

  • English
  • wel
  • All

The Sea Empress oil spill in February 1996 affected the water column, seabed and shores of south Pembrokeshire. Several rocky subtidal sites in and around the entrance to Milford Haven were studied at the time of the spill. This datasets is made up of the results obtained during a subtidal survey of South Pembrokeshire 16 months after the Sea Empress oil spill. The survey aimed to examine the open coast of South Pembrokeshire sites close the entrances of Milford Haven, as far eastwards as Caldey Island. The objective of this work was to revisit previously surveyed bedrock areas which may be have been subjected to elevated water column hydrocarbon load in order to investigate their community diversity, richness and condition.

Identification

Dynodydd
Identifier
NRW_DS110140
Teitl Amgen
Alternative Title
  • CCW Pembrokeshire 'Sea Empress' sublittoral rock survey 1997 JNCCMNCR40000777
  • Asesiad o gymunedau a rhywogaethau creigiau epibenthig isarforol yn dilyn gollyngiad olew'r Sea Empress
Laith Metadata
Metadata Language
English
Lineage

The sites were investigated using diving techniques and the following tasks were carried out: - Site and Habitat Descriptions using standard Phase 2 Marine Nature Conservation Review (MNCR) survey techniques. Diving was carried out using standard SCUBA apparatus. - Photography of biotopes and close up photographs of selected species. Underwater photography was achieved using land cameras in underwater housings and a purpose built submersible Nikonos camera. - Recording of observations which maybe oil pollution related including observations on the presence and abundance of small mobile custacea. Careful observations were made, looking for contamination in any sediments or on rocky surfaces, noting the health of the communities, any signs which may be related to oil pollution e.g. bleaching of algae, dead bivalves and other animals and conspicuous absence of species from the communities. - Collection samples of the mussel, Mytilus edulis, at sites where it was encountered for hydrocarbon analysis. Collections of specimens including algae were made at each site. Where Mytilus edulis was encountered, samples were taken and frozen the same day. These samples were passed on to CEFAS (Centre for Environment, Fisheries and Aquaculture Science) in Burnham-on-Crouch for total hydrocarbon analysis. When diving in the region of the Milford Haven waterway, the Castlemartin Range and the Manorbier Artillery Range, liaison with the appropriate authorities was undertaken prior to diving.
Dyddiad cyfeirnod y set ddata (Cyhoeddiad)
Dataset Reference Date (Publication)
1997-06-30
Perchennog
Owner
  Natural Resources Wales (NRW)
Maes-y-Ffynnon, Penrhosgarnedd, Bangor, Gwynedd, LL57 2DW, Wales
http://naturalresources.wales/?lang=en
Cychwynnwr
Originator
  Countryside Council for Wales (CCW)
Countryside Council for Wales, Maes y Ffynnon, Penrhosgarnedd, Bangor, Gwynedd, LL57 2DW
http://naturalresourceswales.gov.uk/splash?orig=/
 

Extent

Extent

Hyd
Geographic Extent
Wales (WLS)
N
W
E
S
Map representing the geographic extent of the dataset


 

Vertical Extent

Medin Extent Keyword
benthic boundary layer
 
 

Distribution

Fformat - Math a Disgrifiad
Format Type and Description
  • Documents ()

    Specification

    [A] Report (MS Word and PDF-format) [B] Survey results contained in JNCCs copy of Marine Recorder (survey number JNCCMNCR40000777)

 

Quality

Ansawdd Data
Data quality

Cwmpas Ansawdd
Quality Scope
Dataset
Dataset
Cydymffurfiad
Conformity
Commission Regulation (EU) No 1089/2010 of 23 November 2010 implementing Directive 2007/2/EC of the European Parliament and of the Council as regards interoperability of spatial data sets and services
Explanation
Degree
false
Lineage

The sites were investigated using diving techniques and the following tasks were carried out: - Site and Habitat Descriptions using standard Phase 2 Marine Nature Conservation Review (MNCR) survey techniques. Diving was carried out using standard SCUBA apparatus. - Photography of biotopes and close up photographs of selected species. Underwater photography was achieved using land cameras in underwater housings and a purpose built submersible Nikonos camera. - Recording of observations which maybe oil pollution related including observations on the presence and abundance of small mobile custacea. Careful observations were made, looking for contamination in any sediments or on rocky surfaces, noting the health of the communities, any signs which may be related to oil pollution e.g. bleaching of algae, dead bivalves and other animals and conspicuous absence of species from the communities. - Collection samples of the mussel, Mytilus edulis, at sites where it was encountered for hydrocarbon analysis. Collections of specimens including algae were made at each site. Where Mytilus edulis was encountered, samples were taken and frozen the same day. These samples were passed on to CEFAS (Centre for Environment, Fisheries and Aquaculture Science) in Burnham-on-Crouch for total hydrocarbon analysis. When diving in the region of the Milford Haven waterway, the Castlemartin Range and the Manorbier Artillery Range, liaison with the appropriate authorities was undertaken prior to diving.
 

Keywords

Allweddair
Keywords

GEMET - INSPIRE themes, version 1.0
Math
Type
Theme
Theme

Dyfyniad
Citation

Dyddiad (Cyhoeddiad)
Date (Publication)
2008-06-01
Code
geonetwork.thesaurus.external.theme.httpinspireeceuropaeutheme-theme

Allweddair
Keywords

NRW Thesaurus
  • Sea Empress
  • marine surveys (intertidal & subtidal surveys) (littoral survey) (sublittoral surveys) (bathymetric survey) (see also marine monitoring and MNCR)
  • South Pembrokeshire
  • Pembrokeshire (county pre 1974)( county since 4/96)
  • Milford Haven
  • Caldy (Caldey)
  • hydrocarbons
  • algae
  • oil pollution
  • pollution (see also specific types of pollution eg. oil pollution)
  • bleaching
  • underwater photography
  • marine and freshwater inventory
  • sublittoral epibenthic species
  • bedrock
  • community diversity
  • community richness
  • community condition
  • rock communities
Math
Type
Theme
Theme

Dyfyniad
Citation

Dyddiad (Cyhoeddiad)
Date (Publication)
2023-12-31
Code
geonetwork.thesaurus.local.theme.converted_nrw-keywords

Allweddair
Keywords

SeaDataNet Parameter Discovery Vocabulary
  • Zoobenthos generic abundance
  • Zoobenthos taxonomic abundance
  • Habitat characterisation
Math
Type
Theme
Theme

Dyfyniad
Citation

Dyddiad (Adolygu)
Date (Revision)
2021-01-06
Code
geonetwork.thesaurus.external.theme.rdf+xml

Allweddair
Keywords

Integrated Public Sector Vocabulary
  • oil spillage
Math
Type
Theme
Theme

Dyfyniad
Citation

Dyddiad (Adolygu)
Date (Revision)
2013-04-03
Code
geonetwork.thesaurus.external.theme.subjects
 

Spatial Reference System

Code
Latitude and Longitude (EPSG::4326)
 

Content

Gwybodaeth Cynnwys
Content Information

Proffil CNC
NRW Profile

Elfennau CNC
Custom Elements

NRW Related Title

An assessment of sublittoral epibenthic rock communities and species following the Sea Empress oil spill
 

Constraints

Constraints

Limitations on Public Access and Use

Math o Gyfyngiad
Restriction type
Other restrictions
Other restrictions
 

Access Constraints Directive

Limitations
no limitations
 

Access Constraints Text

Other constraints

There are no access restrictions to this data. NRW may release, publish or disseminate it freely.
 

Use Constraints

Cyfyngiadau Defnyddio
Use constraints type
Other restrictions
Other restrictions
Other constraints

© CNC/NRW 1997 There are no use restrictions on this data. Recipients may re-use, reproduce, disseminate this data free of charge in any format or medium, provided they do so accurately, acknowledging both the source and NRW's copyright, and do not use it in a misleading context. It is the recipient's responsibility to ensure the data is fit for the intended purpose, that dissemination or publishing does not result in duplication, and that it is fairly interpreted. Advice on interpretation should be sought where required. To avoid re-using old data, users should periodically obtain the latest version from the original source.
 
 
 

Metadata

Metadata

Dynodydd Ffeil
File Identifier
4f4c4942-4343-5764-6473-313130313430 XML
Laith Metadata
Metadata Language
English
Parent Identifier
Natural Resources Wales (NRW) Marine Benthic Species and Habitat Collation Held in Marine Recorder

NRW_DS114501
Math o adnodd
Resource type
Dataset
Dataset
Dyddiad Metadata
Metadata Date
2024-12-09T12:37:54.031Z
Enw Safonol Metadata
Metadata Standard Name
NRW
Fersiwn Metadata
Metadata Standard Version

1.0

Pwynt Cyswllt
pointOfContact
  Natural Resources Wales (NRW)
Maes-y-Ffynnon, Penrhosgarnedd, Bangor, Gwynedd, LL57 2DW, Wales
http://naturalresources.wales/?lang=en
 
 

Publishing Body

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