Intertidal Monitoring of Sediment Flats in Menai Strait and Conwy Bay Special Area of Conservation (SAC) in 2007

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The purpose of this data capture was 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). In addition to this the data collected to establish sites for long term monitoring and collect baseline/reference data using appropriate methods, in accordance with the conservation objectives. 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. This dataset includes the results of an intertidal monitoring survey carried out on the sediment flats at Traeth Lafan during September 2007. The intertidal sediment communities across Traeth Lafan are considered to be of particular nature conservation importance and their good condition (Favourable status) is listed as a Conservation Objective of the Menai Strait and Conwy Bay SAC. Performance Indicators were still being developed for this feature, so this survey focuses on the richness, distribution and abundance of sediment biotopes.

Identification

Dynodydd
Identifier
NRW_DS111174
Teitl Amgen
Alternative Title
  • 2007 CCW/ASML Menai Strait and Conwy Bay SAC Sediment monitoring, Traeth Lafan MRCCW16300000003
  • Gwaith monitro rhynglanwol ar wastadeddau gwaddodion yn ACA Y Fenai a Bae Conwy yn 2007
Laith Metadata
Metadata Language
English
Lineage

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. A 'phase 1' style methodology adapted from Wyn and Cooke (2001) backed up by a standard core sampling and laboratory analysis. Existing CCW Phase 1 survey maps were used to define the survey area. The 'Grid Maker' tool in MapInfo was then used to create grids of point across the survey area producing a resulting grid of 106 points with 500m between the grid points. There were three parts to the work: in-situ recording of sediment characteristics (including epibiota, infauna and granulometry) at each of the 106 survey stations; collection of samples from seven stations for laboratory analysis of infauna and sediment granulometry; and mapping the extent of a seagrass (Zostera noltii) bed using the track function of handheld GPS units. The confidence in this data is high. Work was carried out by a team of 6 experienced marine biologists. The quality and thoroughness of the species records and counts was sometimes reduced when large amounts of coarse sediment (mainly shell material, with coarse sand in some stations) were present in sieve however specimens which could not be identified in the field were later inspected under microscopes at the survey base.
Additional Information

Intertidal Ecologist, Marine and Freshwater Science Group, NRW Moore, J., Aquatic Survey and Monitoring Ltd. 2009. Across Wale 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
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
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 ()

    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: -TraethLafanData_forMarineRecorder.xls [C] Marine Recorder file: MRCCW16300000003 [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

 

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
Degree
false
Lineage

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. A 'phase 1' style methodology adapted from Wyn and Cooke (2001) backed up by a standard core sampling and laboratory analysis. Existing CCW Phase 1 survey maps were used to define the survey area. The 'Grid Maker' tool in MapInfo was then used to create grids of point across the survey area producing a resulting grid of 106 points with 500m between the grid points. There were three parts to the work: in-situ recording of sediment characteristics (including epibiota, infauna and granulometry) at each of the 106 survey stations; collection of samples from seven stations for laboratory analysis of infauna and sediment granulometry; and mapping the extent of a seagrass (Zostera noltii) bed using the track function of handheld GPS units. The confidence in this data is high. Work was carried out by a team of 6 experienced marine biologists. The quality and thoroughness of the species records and counts was sometimes reduced when large amounts of coarse sediment (mainly shell material, with coarse sand in some stations) were present in sieve however specimens which could not be identified in the field were later inspected under microscopes at the survey base.
 

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
  • Special Areas of Conservation (SAC) (see also Candidate Special Areas of Conservation cSAC)
  • Special Areas of Conservation (SAC) - SAC monitoring
  • intertidal
  • sediment flats
  • Lafan sands (Lavan sands)(Traeth Lafan)
Math
Type
Theme
Theme

Dyfyniad
Citation

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

Allweddair
Keywords

SeaDataNet Parameter Discovery Vocabulary
  • Habitat characterisation
Math
Type
Theme
Theme

Dyfyniad
Citation

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

Spatial Reference System

Code
British National Grid (EPSG::27700)
 

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

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

Cyfyngiadau Defnyddio
Use constraints type
Other restrictions
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

Dynodydd Ffeil
File Identifier
4f4c4942-4343-5764-6473-313131313734 XML
Laith Metadata
Metadata Language
English
Parent Identifier
Natural Resources Wales (NRW) Marine Benthic Species and Habitat Collation Held in Marine Recorder

NRW_DS114501
Math o adnodd
Resource type
Dataset
Dataset
Dyddiad Metadata
Metadata Date
2024-12-09T12:39:16.789Z
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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