Intertidal Monitoring of Rocky Reefs in Pembrokeshire Marine Special Area of Conservation (SAC) 2007-2010

The Habitats Directive establishes that the management of Special Areas of Conservation (SACs) should aim to achieve the favourable conservation status of habitat and species features listed within its Annex I and Annex II. For SACs in Wales, the Countryside Council for Wales (CCW) is therefore required to report on a regular basis on whether features are in favourable conservation status. In Pembrokeshire Marine SAC the relevant Annex I intertidal habitat features include Reefs. The specific area sub-feature of interest covered here are intertidal rocky reefs at six sites in Milford Haven together with one site at Nolton Haven in St Bride’s Bay and another site at Peny-Holt on the Castlemartin peninsula. The purpose of this data capture was to undertake quantitative monitor of the biota colonising sloping emersed bedrock and colonising rockpools.

Identification

Identifier
NRW_DS115409
Alternative Title
  • 2010 CCW / ASML Pembrokeshire Marine SAC Rocky Reef Monitoring MRCCW1630000002D
  • 2009 CCW / ASML Pembrokeshire Marine SAC Rocky Reef Monitoring MRCCW16300000020
  • 2008 CCW / ASML Pembrokeshire Marine SAC Rocky Reef Monitoring MRCCW16300000013
  • 2007 CCW / ASML Pembrokeshire Marine SAC Rocky Reef Monitoring MRCCW1630000000C
  • Monitro Rhynglanwol o Riffiau Creigiog yn Ardal Cadwraeth Arbennig Forol Sir Benfro (ACA) 2007-2010
Metadata Language
English
Lineage

Development of a survey strategy and methodology for the fixed quadrats was carried out by ASML and CCW. Field survey equipment provided by ASML and CCW included handheld GPS navigators (various makes and models, all set to British National Grid and OSGB36 datum), digital cameras (various makes and models, all set to high resolution and local time), tape measures and first aid kits. On each sampling occasion, the survey teams were led by surveyors who were very experienced in rocky shore field work and were sometimes assisted by less experienced workers who helped with logistics. At each survey site records were taken from threes shore heights; Upper, Mid and Lower shore. Within each shore zone, the four 1 m x 1 m quadrats were relocated. The quadrats are sited in homogeneous areas of inclined rock (where possible) avoiding rock pools and large fissures. Within each 1 m2 quadrat, presence/absence data were recorded for all conspicuous species using a 25 cell grid (20 cm x 20 cm cells). This gave a frequency score of between 0 and 25 for each species. Organisms were identified to species level where possible with specimens being returned to the laboratory for verification where necessary.
Dataset Reference Date (Publication)
2011-05-31
Owner
  Natural Resources Wales (NRW)
Maes-y-Ffynnon, Penrhosgarnedd, Bangor, Gwynedd, LL57 2DW, Wales
http://naturalresources.wales/?lang=en
Originator
  Aquatic Survey and Monitoring Ltd (ASML)
Whitfield Brow, Bollihope, Frosterley, Weardale, Co. Durham, DL13 2SZ, England
http://www.marineseen.com/aquatic_survey_and_monitoring.htm
Originator
  Countryside Council for Wales (CCW)
Countryside Council for Wales, Maes y Ffynnon, Penrhosgarnedd, Bangor, Gwynedd, LL57 2DW
http://naturalresourceswales.gov.uk/splash?orig=/
Originator
  Natural Resources Wales (NRW)
Maes-y-Ffynnon, Penrhosgarnedd, Bangor, Gwynedd, LL57 2DW, Wales
http://naturalresources.wales/?lang=en
 

Extent

Extent

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


 

Vertical Extent

Medin Extent Keyword

unknown
 
 

Distribution

Format Type and Description
  • Documents ()

    Specification

    [A] Report and proformae for recording at each site in word and pdf format. [B] Spreadsheets - Pembs Quadrat Data 2007 final - Pembs Quadrat Data 2008 final - Pembs Quadrat Data 2009 final - Pembs Quadrat Data AQC 2007 – 2010 - Pembs Marine 2007 - 2010 quadrats photo catalogue [C] Primer files: Pembs Shore FB up to 2010.pwk [D] Photographs in jpeg format of quadrats and the site for each of the four years [E] Marine Recorder file

 

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

Development of a survey strategy and methodology for the fixed quadrats was carried out by ASML and CCW. Field survey equipment provided by ASML and CCW included handheld GPS navigators (various makes and models, all set to British National Grid and OSGB36 datum), digital cameras (various makes and models, all set to high resolution and local time), tape measures and first aid kits. On each sampling occasion, the survey teams were led by surveyors who were very experienced in rocky shore field work and were sometimes assisted by less experienced workers who helped with logistics. At each survey site records were taken from threes shore heights; Upper, Mid and Lower shore. Within each shore zone, the four 1 m x 1 m quadrats were relocated. The quadrats are sited in homogeneous areas of inclined rock (where possible) avoiding rock pools and large fissures. Within each 1 m2 quadrat, presence/absence data were recorded for all conspicuous species using a 25 cell grid (20 cm x 20 cm cells). This gave a frequency score of between 0 and 25 for each species. Organisms were identified to species level where possible with specimens being returned to the laboratory for verification where necessary.
 

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
  • rocky shore
  • rocky reef
  • Pembrokeshire Marine SAC
  • Pembrokeshire Marine cSAC
  • marine surveys (intertidal & subtidal surveys) (littoral survey) (sublittoral surveys) (bathymetric survey) (see also marine monitoring and MNCR)
  • marine biology (subtidal biology) (littoral biology) (sublittoral biology)(intertidal biology)(see also seashore)
  • seashore (intertidal) (littoral) (see also beaches)
  • marine ecology (intertidal ecology)(subtidal ecology) (littoral communities) (intertidal habitat)(see also seashore)
Type
Theme

Citation

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

Keywords

SeaDataNet Parameter Discovery Vocabulary
  • Habitat characterisation
  • Habitat extent
Type
Theme

Citation

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

Spatial Reference System

Code
Latitude and Longitude (EPSG::4326)
 

Content

Content Information

NRW Profile

Custom Elements

NRW Related Title

Monitoring of intertidal rocky reefs in Pembrokeshire Marine SAC 2007 to 2010
 

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 on this data. NRW may release, publish or disseminate it freely.
 

Use Constraints

Use constraints type
Other restrictions
Other constraints

© CNC/NRW Data may be re-used under the terms of the Open Government Licence providing it is done so, acknowledging both the source and NRW's copyright. It is the recipient's responsibility to ensure the data is fit for the intended purpose.
 
 
 

Metadata

Metadata

File Identifier
4f4c4942-4343-5764-6473-313135343039 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
2024-05-31T09:40:02.341Z
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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