Intertidal Monitoring of Tide-Swept Boulder Habitat in the Menai Strait and Conwy Bay Special Area of Conservation (SAC) 2007
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
- Extent
- Distribution
- Quality
- Keywords
- Spatial Reference System
- Content
- Constraints
- Maintenance
- Metadata
Identification
- Identifier
- NRW_DS111175
- Alternative Title
-
- Gwaith monitro rhynglanwol ar gynefin clogfeini llanwol yn ACA Y Fenai a Bae Conwy yn 2007
- 2007 CCW/ASML Menai Strait and Conwy Bay SAC Boulder monitoring, Britannia Bridge MRCCW16300000005
- 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.
- Dataset Reference Date (Publication)
- 2009-01-31
Temporal Extent
- Begin date
- 2007-09-13
- End date
- 2007-09-14
- Topic category
-
- Oceans
- Biota
Extent
Extent
- Geographic Extent
- SIR YNYS MON - ISLE OF ANGLESEY
- Geographic Extent
- CONWY - CONWY
- Geographic Extent
- GWYNEDD - GWYNEDD
))
Vertical Extent
- Medin Extent Keyword
-
benthic boundary layer
Distribution
- Format Type and Description
-
-
Documents
Documents
()
- Specification
-
[A] Digital versions of the contract report: Microsoft Word document(s); and an equivalent Adobe Portable Document Format version. [B] Excel Spreadsheets of data: BritanniaBridgeBoulderData__forMarineRecorder.xls [C] Marine Recorder file: MRCCW16300000005 [D] A series of MapInfo GIS layers in MapInfo Native format (Tables) Translations from the above MapInfo Tables are retained in ESRI Shapefile and MapInfo Interchange formats. [E} Photos
-
Documents
Documents
()
Quality
Data quality
- Quality Scope
- Dataset
- 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
Keywords
- Type
- Theme
Citation
- Date (Publication)
- 2008-06-01
Keywords
- NRW Thesaurus
-
- Menai Strait and Conwy Bay SAC
- Special Areas of Conservation (SAC) (see also Candidate Special Areas of Conservation cSAC)
- Special Areas of Conservation (SAC) - SAC monitoring
- intertidal
- boulders
- under boulder
- underboulder
- Type
- Theme
Citation
- Date (Publication)
- 2023-12-31
Keywords
- SeaDataNet Parameter Discovery Vocabulary
-
- Habitat characterisation
- Type
- Theme
Citation
- Date (Revision)
- 2021-01-06
Spatial Reference System
Content
Content Information
NRW Profile
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
- Restriction type
- Other restrictions
Access Constraints Directive
- Limitations
- no limitations
Access Constraints Text
- Other constraints
-
The following data is considered OS derived data and is therefore jointly owned by NRW and the Ordnance Survey. NRW may release, publish or disseminate this data freely; providing recipients are made aware of use restrictions (See general use restrictions).
Use Constraints
- Use constraints type
- Other restrictions
- Other constraints
-
© CNC/NRW and © Crown copyright 2009. All rights reserved. Natural Resources Wales, AC0000849444 Third parties seeking to re-use this data require a Licence issued by NRW. It allows re-use, reproduction and dissemination in any format or medium but only for non-commercial purposes, according to the terms and conditions of the Licence. Those seeking commercial re-use require a commercial licence available from the OS.
Metadata
Metadata
- File Identifier
- 4f4c4942-4343-5764-6473-313131313735 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
- 2024-05-31T09:27:19.774Z
- Metadata Standard Name
- NRW
- Metadata Standard Version
-
1.0