Intertidal Monitoring of Tide-Swept Boulder Habitat in the Menai Strait and Conwy Bay Special Area of Conservation (SAC) 2007
Gwaith monitro rhynglanwol ar gynefin clogfeini llanwol yn ACA Y Fenai a Bae Conwy yn 2007

  • English
  • wel
  • All

There were two purposes for this data capture. Firstly, to establish the reference condition from which to establish conservation objectives; and to be able to take account of natural changes in the appropriate management of the features of the Special Area of Conservation (SAC). Secondly, to repeat survey of sites surveyed in 2005 to further test and develop monitoring methodology and collect monitoring data. Menai Strait and Conwy Bay SAC is designated for five Annex 1 habitats; Sandbanks which are slightly covered by sea water all the time, Mudflats and sandflats not covered by seawater at low tide, reefs, large shallow inlets and bays; and submerged or partially submerged sea caves. Intertidal mudflats and sandflats in this location include a variety of biotopes, many of which are present on the large sediment flat of Traeth Lafan. Intertidal reefs include a large variety of biotopes, with tide-swept bedrock, boulder and cobble habitats particularly well represented. This dataset includes the results of an intertidal monitoring survey carried out on the tide-swept boulder habitat just south of Britannia Bridge during September 2007.

Identification

Dynodydd
Identifier
NRW_DS111175
Teitl Amgen
Alternative Title
  • 2007 CCW/ASML Menai Strait and Conwy Bay SAC Boulder monitoring, Britannia Bridge (MRCCW16300000005)
Laith Metadata
Metadata Language
English
Lineage

The methodology used was as follows. 5 stations were placed at intervals of 70-100 m along the shore at the Britannia Bridge site with their positions uploaded to handheld GPS. 5 boulders were selected for survey at each station using set criteria. Each boulder was surveyed and results were recorded on a recording form (upper surfaces and under surfaces of the boulders were recorded separately on either side of the form). Data captured included: - Digital photographs of the upper and under surface; - Length and width of the boulder, - Description of underlying subtrata (including a record of whether or not it was anoxic) - Assessment of whether the boulder had been turned - Records of presence or absence of the conspicuous species (aggregate taxa and individual species and genera) - Estimates of percentage cover for algae and other cover species - Presence of mobile animals and hydroids etc
Additional Information

Phase 1 surveys of intertidal habitats in the SAC were carried out in the SAC between 1999 and 2003 (Brazier et al. 2007), providing detailed mapping of the intertidal biotopes with some information on characterizing species. The report associated with this dataset is as follows: Moore, J. 2009 Across Wales intertidal SAC monitoring Menai Strait and Conwy Bay SAC September 2007. Countryside Council for Wales Marine Monitoring Report (56). Bangor.
Dyddiad cyfeirnod y set ddata (Cyhoeddiad)
Dataset Reference Date (Publication)
2009-01-31

Temporal Extent

Begin date
2007-09-13
End date
2007-09-14
 
Categori pwnc
Topic category
  • Biota
    Biota
Perchennog
Owner
  Natural Resources Wales (NRW) -
Maes-y-Ffynnon, Penrhosgarnedd, Bangor, Gwynedd, LL57 2DW, Wales
http://naturalresources.wales/?lang=en
Cychwynnwr
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
 

Extent

Extent

Hyd
Geographic Extent
SIR YNYS MON - ISLE OF ANGLESEY
Hyd
Geographic Extent
CONWY - CONWY
Hyd
Geographic Extent
GWYNEDD - GWYNEDD
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
  • Database ( Marine Recorder Online - Version 2.09.02 )

    Specification

    Marine Recorder

 

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

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

The methodology used was as follows. 5 stations were placed at intervals of 70-100 m along the shore at the Britannia Bridge site with their positions uploaded to handheld GPS. 5 boulders were selected for survey at each station using set criteria. Each boulder was surveyed and results were recorded on a recording form (upper surfaces and under surfaces of the boulders were recorded separately on either side of the form). Data captured included: - Digital photographs of the upper and under surface; - Length and width of the boulder, - Description of underlying subtrata (including a record of whether or not it was anoxic) - Assessment of whether the boulder had been turned - Records of presence or absence of the conspicuous species (aggregate taxa and individual species and genera) - Estimates of percentage cover for algae and other cover species - Presence of mobile animals and hydroids etc
 

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
  • Menai Strait and Conwy Bay SAC
  • Underboulders map (2004), modified survey technique (2005+)
  • Marine Recorder
Math
Type
Theme
Theme

Dyfyniad
Citation

Dyddiad (Cyhoeddiad)
Date (Publication)
2026-08-27
Code
geonetwork.thesaurus.local.theme.converted_nrw-keywords

Allweddair
Keywords

SeaDataNet Parameter Discovery Vocabulary
Math
Type
Theme
Theme

Dyfyniad
Citation

Dyddiad (Cyhoeddiad)
Date (Publication)
2024-06-19
Code
geonetwork.thesaurus.external.theme.rdf+xml
 

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

Across Wales intertidal SAC monitoring Menai Strait and Conwy Bay SAC september 2007
 

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 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.
 

Attribution Statement

Other constraints

Contains Natural Resources Wales information © Natural Resources Wales and Database Right. All rights Reserved.
 

Licence

Other constraints
Open Government Licence
 
 
 

Metadata

Metadata

Dynodydd Ffeil
File Identifier
4f4c4942-4343-5764-6473-313131313735 XML
Laith Metadata
Metadata Language
English
Parent Identifier
Across Wales Intertidal Monitoring Survey

NRW_DS109834
Math o adnodd
Resource type
Dataset
Dataset
Dyddiad Metadata
Metadata Date
2026-10-19T09:03:03.267Z
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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