Collection Activity in the Menai Strait and Pilot Methods to Assess Frequency of Boulder Turning Activity (2011)

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  • wel
  • All

Special Areas of Conservation (SACs) are strictly protected sites designated under the EC Habitats Directive. Reporting on the condition of the intertidal features of the Menai Strait and Conwy Bay Special Area of Conservation (SAC) depends upon an understanding of the features and the threats of damage by regulated and unregulated activities.The former Countryside Council for Wales (CCW), now part of Natural Resources Wales (NRW), run an intertidal SAC monitoring program, which is undertaken to evaluate the quality of the biological communities associated with under-boulder and muddy gravel habitats. The biological data must be placed in context with the levels of collecting activity on the shore, specifically bait and winkle collecting. CCW contracted Marine EcoSol to better assess the intensity of collecting activity in the Menai Strait and Conwy Bay SAC, in order to establish the levels that might be considered acceptable, in terms of their impact on the intertidal (Reef) features. Both muddy gravel and underboulder communities are Biodiversity Action Plan (BAP) habitats, and the 2011 field surveys are within or adjacent to intertidal Site of Special Scientific Interest (SSSI) and marine SAC. The project was to investigate the feasibility of developing rapid visual assessment methods for use by non-specialists and to provide contextual information for status reporting of reef features within the Menai Strait and Colwyn Bay SAC.

Identification

Dynodydd
Identifier
NRW_DS114836
Teitl Amgen
Alternative Title
  • Gweithgareddau casglu yn Y Fenai a dulliau peilot o asesu amlder gweithgareddau troi clogfeini 2011.
Laith Metadata
Metadata Language
English
Lineage

This builds on work undertaken in 2009 to develop a trial method for the evaluation of levels of unregulated activity of collecting peeler crabs and winkles. Collection effort was rapidly assessed by driving along the length of the Menai Strait from west to east over approximately 3 hours, stopping at 17 sites to record the number of collectors at each site on the same tide. This survey was repeated 6 times between April and September. Methods to assess the impact of any boulder turning were also trialled. Surveyors assigned 'turning categories' to each boulder within 1 m either side of three 20 m transect lines at Y Foryd (a high impacted site) and Y Felinheli (a site of low collector impact).
Additional Information

A number of improvements to the methodology are suggested in the associated report (CCW Marine Monitoring Report 94).
Dyddiad cyfeirnod y set ddata (Cyhoeddiad)
Dataset Reference Date (Publication)
2012-03-31
Perchennog
Owner
  Natural Resources Wales (NRW)
Maes-y-Ffynnon, Penrhosgarnedd, Bangor, Gwynedd, LL57 2DW, Wales
http://naturalresources.wales/?lang=en
Cychwynnwr
Originator
  Marine Ecological Solutions Ltd
Marine Ecological Solutions Ltd, 41 High Street, Menai Bridge, Ynys Mon, LL59 5EF, Wales
http://www.marine-ecosol.co.uk
 

Extent

Extent

Hyd
Geographic Extent
GWYNEDD - GWYNEDD
Hyd
Geographic Extent
SIR YNYS MON - ISLE OF ANGLESEY
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
  • Documents ()

    Specification

    [A] The final report in Microsoft Word and Adobe PDF formats. [B] A full set of Report images (maps) produced in JPEG format. [C] A series of GIS layers on which the maps in the report are based [D] A full set of images produced in jpg format and index excel spreadsheet

 

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

This builds on work undertaken in 2009 to develop a trial method for the evaluation of levels of unregulated activity of collecting peeler crabs and winkles. Collection effort was rapidly assessed by driving along the length of the Menai Strait from west to east over approximately 3 hours, stopping at 17 sites to record the number of collectors at each site on the same tide. This survey was repeated 6 times between April and September. Methods to assess the impact of any boulder turning were also trialled. Surveyors assigned 'turning categories' to each boulder within 1 m either side of three 20 m transect lines at Y Foryd (a high impacted site) and Y Felinheli (a site of low collector impact).
 

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
  • activities
  • bait digging (bait collecting)
  • peelers
  • under boulder
  • underboulder
  • turning
  • disturbance
  • crabs
  • winkles
  • littorina littorea
  • Menai Strait and Conwy Bay SAC
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
  • Habitat extent
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

Collection activity in the Menai Strait and pilot methods to assess frequency of boulder turning activity
 

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 2012. 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.
 
 
 

Metadata

Metadata

Dynodydd Ffeil
File Identifier
4f4c4942-4343-5764-6473-313134383336 XML
Laith Metadata
Metadata Language
English
Math o adnodd
Resource type
Dataset
Dataset
Dyddiad Metadata
Metadata Date
2024-12-09T12:37:24.256Z
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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