Skomer Island Eunicella verrucosa Survey 1985

This dataset is a collation of the results of a survey aimed at studying the population of the broad sea fan Eunicella verrucosa at Skomer Marine Reserve. The dataset also contains data on a number of other species of interest and previously unsurveyed areas of the reserve. The purpose of this data capture was: - Provide information on the distribution and abundance of E. verrucosa around Skomer and determine habitat preferences. - Investigate the size of individual E. verrucosa and the population age structure. - Study the epibionts of E. verrucosa. - Study orientation and growth form of E. verrucosa colonies in a variety of environmental conditions. The survey also aimed to tag and photograph E. verrucosa for future monitoring, record the occurrence and abundance of various species of interest and survey some additional areas around Skomer Marine Reserve for which there was little or no information.

Identification

Identifier
NRW_DS111406
Alternative Title
  • Arolwg Eunicella verrucosa Ynys Sgomer 1985
Metadata Language
English
Lineage

This data forms part of the Pembrokeshire Marine Species Atlas (see separate metadata entry). Seven sites around Skomer Marine Nature Reserve were chosen for survey, largely on the basis of information collected during previous surveys. Divers swam offshore from a given point on the coast along a particular compass bearing. The habitat on which each E. verrucosa was found was noted and SMR Habitat Recording Sheets were completed for most sites with profiles drawn. An assessment of E. verrucosa abundance was made by calculating the number recorded per 30 minute dive. The maximum height and width of individual E. verrucosa was measured to the nearest centimetre and orientation was measured using wrist compasses. E. verrucosa were tagged using plastic electrical cable ties with numbers engraved. These were fixed onto side branches near to the main stem. A number of target species were searched for and their location was normally shown on profiles and habitat sketches. 3 previously unsurveyed/poorly documented areas were also surveyed. Habitat description and brief notes on conspicuous species were recorded. Plant and animal species were recorded on checklists and abundances determined and photographs were taken. Samples for unidentified plants and animals were taken for later identification.
Dataset Reference Date (Publication)
1986-12-31
Owner
  Natural Resources Wales (NRW)
Maes-y-Ffynnon, Penrhosgarnedd, Bangor, Gwynedd, LL57 2DW, Wales
http://naturalresources.wales/?lang=en
Originator
  Bunker
MarineSeen, Estuary Cottage, Bentlass, Hundleton, Pembrokeshire, SA71 5RN
http://www.marineseen.com/
Originator
  Field Studies Council (FSC)
Head office, Preston Montford, Montford Bridge, Shrewsbury, Shropshire, SY4 1HW, England
http://www.field-studies-council.org/
Originator
  Nature Conservancy Council (NCC)
c/o Natural Resources Wales, Maes Y Ffynnon, Penrhosgarnedd, Bangor, LL57 2DW, Wales
http://naturalresourceswales.gov.uk/splash?orig=/
 

Extent

Extent

Geographic Extent
SIR BENFRO - PEMBROKESHIRE
Geographic Extent
Wales (WLS)
N
W
E
S
Map representing the geographic extent of the dataset


 

Vertical Extent

Medin Extent Keyword
benthic boundary layer

Vertical Extent

Minimum value (metres)
0
Maximum value (metres)
-23.8
Vertical CRS
 
 

Distribution

Format Type and Description
  • Documents ()

    Specification

    [A] Paper copy of report containing site descriptions, wave and tidal exposure data, species lists, E. verrucosa measurements etc [B] Data entered into Marine Recorder.

 

Quality

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
Degree
false
Lineage

This data forms part of the Pembrokeshire Marine Species Atlas (see separate metadata entry). Seven sites around Skomer Marine Nature Reserve were chosen for survey, largely on the basis of information collected during previous surveys. Divers swam offshore from a given point on the coast along a particular compass bearing. The habitat on which each E. verrucosa was found was noted and SMR Habitat Recording Sheets were completed for most sites with profiles drawn. An assessment of E. verrucosa abundance was made by calculating the number recorded per 30 minute dive. The maximum height and width of individual E. verrucosa was measured to the nearest centimetre and orientation was measured using wrist compasses. E. verrucosa were tagged using plastic electrical cable ties with numbers engraved. These were fixed onto side branches near to the main stem. A number of target species were searched for and their location was normally shown on profiles and habitat sketches. 3 previously unsurveyed/poorly documented areas were also surveyed. Habitat description and brief notes on conspicuous species were recorded. Plant and animal species were recorded on checklists and abundances determined and photographs were taken. Samples for unidentified plants and animals were taken for later identification.
 

Keywords

Keywords

GEMET - INSPIRE themes, version 1.0
Type
Theme

Citation

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

Keywords

NRW Thesaurus
  • Skomer (Skomer Island)
  • Skomer Marine Nature Reserve
  • Skomer MNR
  • broad sea fan
  • eunicella verrucosa
  • marine surveys (intertidal & subtidal surveys) (littoral survey) (sublittoral surveys) (bathymetric survey) (see also marine monitoring and MNCR)
  • sea fan (Cnidaria)
Type
Theme

Citation

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

Keywords

SeaDataNet Parameter Discovery Vocabulary
  • Zoobenthos taxonomic abundance
  • Zoobenthos taxonomy-related counts
Type
Theme

Citation

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

Spatial Reference System

Code
British National Grid (EPSG::27700)
 

Content

Content Information

NRW Profile

Custom Elements

NRW Related Title

A brief review of the ecology of the sea fan eunicella verrucosa and a survey of the skomer population in 1985 : together with notes on some other species of interest and data concerning previously unsurveyed or poorly documented areas : volume 2 raw data supplement
 

Constraints

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 1991 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

File Identifier
4f4c4942-4343-5764-6473-313131343036 XML
Metadata Language
English
Parent Identifier
Natural Resources Wales (NRW) Marine Benthic Species and Habitat Collation Held in Marine Recorder

NRW_DS114501
Resource type
Dataset
Metadata Date
2024-12-09T12:31:02.32Z
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

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