Sea Empress Rocky Shore Impact Assessment/Monitoring: Permanent Transects and Rock Pool Studies

Three permanent intertidal transects in the vicinity of the Dale Fort Field Centre were established immediately following the Sea Empress oil spill. Marine communities at these sites and in rock pools at a further site were surveyed at intervals up to fourteen months post spill. Data was collected in order to assess the impact of the Sea Empress oil spill on the rocky shore.

Identifier: NRW_DS110125

Alternative Title

Metadata Language: English

Lineage: Transect and rock pool surveys were carried out.

- Transect Studies:

All transects were surveyed using 0.25m2 frame quadrats at 1m vertical height intervals. Where possible, direct counts were made of numbers of individuals of each species present within the quadrat frame. When direct counting was rendered either impossible, because of the overwhelming numbers of individuals present or inappropriate, because of the growth form of the species; two different approaches were adopted. For all algae, lichens, small barnacles and colonial animals (e.g. sponges), percentage cover within the quadrat frame was estimated. For Littorina saxatilis (agg.) (rough periwinkles) and Melarhaphe neritoides (small periwinkle) the quadrat frame was sub-divided to form a smaller quadrat 0.10% of its total area. Numbers of individuals were counted within this smaller quadrat and the total multiplied by 10 to give an estimate of numbers per 0.25m2.

Transect studies: Castle Beach Bay - Transect1: Grid reference: SM 824051 / Slip-Pier Beach - Transect 2: Grid reference: SM 822053 / Monkhaven - Transect 3: Grid reference: SM 829064

- Rock-pool Studies: Where appropriate, numbers of individuals of each species were counted within each pool. Algae and colonial animals were assayed by estimating percentage cover of each species within the pool.

Rockpool studies: Slip-Pier Beach near Dale Fort: Grid reference: SM 822052

Dataset Reference Date (Publication): 1998-12-31

Temporal Extent

Begin date: 1996-02-22

End date: 1997-04-08

Topic category

Biota

Owner

Natural Resources Wales (NRW)

Maes-y-Ffynnon, Penrhosgarnedd, Bangor, Gwynedd, LL57 2DW, Wales

http://naturalresources.wales/?lang=en

Originator

Field Studies Council (FSC)

Head office, Preston Montford, Montford Bridge, Shrewsbury, Shropshire, SY4 1HW, England

http://www.field-studies-council.org/

Extent

Geographic Extent: Wales (WLS)

Vertical Extent

Medin Extent Keyword: benthic boundary layer

Distribution

Format Type and Description

Documents ( )

Specification

[A] Report (MS Word, Pdf-format)
Delimited ( )

Specification

[B] Data in spreadsheet format (MS Excel)

Data quality

Quality Scope: Dataset

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: This dataset has not been assessed for conformance to the referenced INSPIRE regulation.
Degree: false

Lineage: Transect and rock pool surveys were carried out.

- Transect Studies:

All transects were surveyed using 0.25m2 frame quadrats at 1m vertical height intervals. Where possible, direct counts were made of numbers of individuals of each species present within the quadrat frame. When direct counting was rendered either impossible, because of the overwhelming numbers of individuals present or inappropriate, because of the growth form of the species; two different approaches were adopted. For all algae, lichens, small barnacles and colonial animals (e.g. sponges), percentage cover within the quadrat frame was estimated. For Littorina saxatilis (agg.) (rough periwinkles) and Melarhaphe neritoides (small periwinkle) the quadrat frame was sub-divided to form a smaller quadrat 0.10% of its total area. Numbers of individuals were counted within this smaller quadrat and the total multiplied by 10 to give an estimate of numbers per 0.25m2.

Transect studies: Castle Beach Bay - Transect1: Grid reference: SM 824051 / Slip-Pier Beach - Transect 2: Grid reference: SM 822053 / Monkhaven - Transect 3: Grid reference: SM 829064

- Rock-pool Studies: Where appropriate, numbers of individuals of each species were counted within each pool. Algae and colonial animals were assayed by estimating percentage cover of each species within the pool.

Rockpool studies: Slip-Pier Beach near Dale Fort: Grid reference: SM 822052

Keywords

GEMET - INSPIRE themes, version 1.0

Habitats and biotopes

Type: Theme

Citation

Date (Publication): 2008-06-01

Code: geonetwork.thesaurus.external.theme.httpinspireeceuropaeutheme-theme

Keywords

NRW Thesaurus

marine and freshwater inventory
oil pollution
monitoring (see specific types of monitoring eg. woodland monitoring)
pollution (see also specific types of pollution eg. oil pollution)
rockpools
rocky shore
Dale Fort
transect (transects) (transect profile) (transect profiles)
impact assessment
Sea Empress

Type: Theme

Citation

Date (Publication): 2025-01-08

Code: geonetwork.thesaurus.local.theme.converted_nrw-keywords

Keywords

SeaDataNet Parameter Discovery Vocabulary

Zoobenthos generic abundance
Zoobenthos taxonomic abundance
Habitat characterisation

Type: Theme

Citation

Date (Publication): 2024-06-19

Code: geonetwork.thesaurus.external.theme.rdf+xml

Keywords

IPSV Subjects List

Oil spillage

Type: Theme

Citation

Date (Publication): 2020-11-18

Code: geonetwork.thesaurus.external.theme.subjects

Code: British National Grid (EPSG::27700)

Content Information

NRW Profile

Custom Elements

NRW Related Title: Sea Empress rocky shore impact assessment/monitoring: Dale Fort Field Centre permanent transects and rock pool studies

Constraints

Limitations on Public Access and Use

Restriction type: 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

Use constraints type: Other restrictions

Other constraints: © CNC/NRW 1998. 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

File Identifier: 4f4c4942-4343-5764-6473-313130313235 XML

Metadata Language: English

Resource type: Dataset

Metadata Date: 2025-03-18T14:34:18.398Z

Metadata Standard Name: NRW

Metadata Standard Version: 1.0

pointOfContact

Natural Resources Wales (NRW)

Maes-y-Ffynnon, Penrhosgarnedd, Bangor, Gwynedd, LL57 2DW, Wales

http://naturalresources.wales/?lang=en

Publishing Body

Access the portal

Full access to the portal and metadata.

Sea Empress Rocky Shore Impact Assessment/Monitoring: Permanent Transects and Rock Pool Studies

Identification

Temporal Extent

Extent

Extent

Vertical Extent

Distribution

Distribution

Quality

Data quality

Keywords

Keywords

Citation

Keywords

Citation

Keywords

Citation

Keywords

Citation

Spatial Reference System

Content

Content Information

NRW Profile

Custom Elements

Constraints

Constraints

Limitations on Public Access and Use

Access Constraints Directive

Access Constraints Text

Use Constraints

Metadata

Metadata

Publishing Body