4f4c4942-4343-5764-6473-313131313435
eng
dataset
Natural Resources Wales (NRW)
0300 065 3000
Maes-y-Ffynnon
LL57 2DW
enquiries@naturalresourceswales.gov.uk
pointOfContact
2018-07-05
MEDIN Discovery Metadata Standard
Version 2.3.8
urn:ogc:def:crs:EPSG::WGS84
OGP
Monitoring of Subtidal Rocky Reef in Pembrokeshire Marine Special Area of Conservation (SAC)
Monitro riff yn ACA Sir Benfro Forol
Monitoring of tides-wept infralittoral and circalittoral rock in Pembrokeshire Marine SAC
Quadrat monitoring in Pembrokeshire Marine SAC
2008 CCW / ASML Pembrokeshire Marine SAC Rocky Reef Monitoring MRCCW16300000013
2009 CCW / ASML Pembrokeshire Marine SAC Rocky Reef Monitoring MRCCW16300000020
2010 CCW / ASML Pembrokeshire Marine SAC Rocky Reef Monitoring MRCCW1630000002D
Draft 2012 CCW/ASML Pembrokeshire Marine SAC Rocky Reef Monitoring MRCCW16300000032
Draft 2013 NRW/ASML Pembrokeshire Marine SAC Rocky Reef Monitoring MRCCW16300000034
Draft 2014 NRW/ASML Pembrokeshire Marine SAC Rocky Reef Monitoring MRCCW16300000035
2010-09-23
publication
2011-11-21
revision
111145
https://naturalresources.wales
This dataset consists of the results from an integrated monitoring strategy on a site level carried out to provide an overview of the status of reef feature within the Pembrokeshire MarineSpecial Area of Conservation (SAC) as a whole. Work is concentration on tide-swept infralittoral and circalittoral rock. 7 sites across the SAC selected and permanent monitoring quadrat established within each of the biotope complexes. Within the upper parts of the Milford Haven sites were established at Beggars Reach; Warrior and Dockyard Bank. Near to the mouth of the Haven; sites were established at Chapel Reef; Thorn Island; and Junkos Reef. A site was also established within the off-shore islands of The Smalls.
Natural Resources Wales (NRW)
0300 065 3000
Maes-y-Ffynnon
LL57 2DW
enquiries@naturalresourceswales.gov.uk
custodian
Various contractors
01248 385500
See Natural Resources Wales
Maes y Ffynnon
LL57 2DW
enquiries@naturalresourceswales.gov.uk
originator
CCW Marine Monitoring Team
01248 385500
Countryside Council for Wales
Maes y Ffynnon
LL57 2DW
enquiries@naturalresourceswales.gov.uk
originator
annually
Geographic Information System
Species distribution
GEMET - INSPIRE themes, version 1.0
2022-02-05
publication
Habitat characterisation
Zoobenthos taxonomy-related counts
Zoobenthos generic abundance
SeaDataNet Parameter Discovery Vocabulary
2011-03-25
publication
Marine Environmental Data and Information Network
© CNC/NRW 2011 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.
otherRestrictions
There are no access restrictions to this data. NRW may release, publish or disseminate it freely.
eng
biota
SeaVoX Vertical Co-ordinate Coverages
2010-05-18
publication
benthic boundary layer
-5.76391442
-4.81860025
51.59989156
51.79660896
2005-07-27
2010-09-23
-0.9
-25
Natural Resources Wales (NRW)
0300 065 3000
Maes-y-Ffynnon
LL57 2DW
enquiries@naturalresourceswales.gov.uk
distributor
dataset
At each site quadrats were generally established in rows of 4 quadrats at 2 or 3 depths at each site. A standard recording methodology was devised to allow comparisons to be made of the data collected at any site in any year. 0.5m x 0.5m quadrats are attached to the permanent markers. An initial assessment of the distribution of species within the quadrat as a whole is made. The abundant/dominant species are recorded first followed by the rare and cryptic species using a series of timed cell frequency counts is then undertaken to assess species diversity. 4 successive counting periods of 5 minutes each is taken noting presence of species from within each cell. Counting continues until a total period of 20 minutes. Where species cannot be identified; specime
ns are collected from outside the quadrat and identified later. A photo is taken of the species in-situ. A specimen catalogue for the whole SAC is also collated. Where time allows either a video of the quadrat is made of images of the quadrat are taken. Still images have been captured from video for each cell and 'stitched' to make a single image of the whole quadrat. Detailed methodologies and descriptions and variations at specific sites can be found in Marine Monitoring Report 25b (standard operating procedures 15). The majority of QA occurs at Thorn Island and allows for a subset of quadrats to be surveyed and compared prior to the data collection exercise. This allows all surveyors to refresh their skills and ensure species id is consistent. A subset of all quadrats are
either photographed or recorded using video and the images archived to allow quadrats to be re-evaluated if necessary. Temperature and/or salinity loggers are also continuously logging at most of these site. Sponge thickness measures are also taken at Warrior Site. Analysis of the quadrat data may also be carried out in PRIMER.