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

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.

Identifier: NRW_DS114836

Alternative Title

Gweithgareddau casglu yn Y Fenai a dulliau peilot o asesu amlder gweithgareddau troi clogfeini 2011.

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).

Dataset Reference Date (Publication): 2012-03-31

Temporal Extent

Begin date: 2011-04-15

End date: 2011-10-03

Topic category

Biota

Owner

Natural Resources Wales (NRW)

Maes-y-Ffynnon, Penrhosgarnedd, Bangor, Gwynedd, LL57 2DW, Wales

http://naturalresources.wales/?lang=en

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

Geographic Extent: GWYNEDD - GWYNEDD

Geographic Extent: SIR YNYS MON - ISLE OF ANGLESEY

Map representing the geographic extent of the dataset

Vertical Extent

Medin Extent Keyword: benthic boundary layer

Format Type and Description

Documents 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

Data quality

Quality Scope: Dataset

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

GEMET - INSPIRE themes, version 1.0

Habitats and biotopes

Type: Theme

Citation

Date (Publication): 2008-06-01

Code: geonetwork.thesaurus.external.theme.httpinspireeceuropaeutheme-theme

Keywords

NRW Thesaurus

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

Type: Theme

Citation

Date (Publication): 2023-12-31

Code: geonetwork.thesaurus.local.theme.converted_nrw-keywords

Keywords

SeaDataNet Parameter Discovery Vocabulary

Habitat characterisation
Habitat extent

Type: Theme

Citation

Date (Revision): 2021-01-06

Code: geonetwork.thesaurus.external.theme.rdf+xml

Code: British National Grid (EPSG::27700)

Content Information

NRW Profile

Custom Elements

NRW Related Title: Collection activity in the Menai Strait and pilot methods to assess frequency of boulder turning activity

Constraints

Limitations on Public Access and Use

Restriction type: 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

Use constraints type: 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

File Identifier: 4f4c4942-4343-5764-6473-313134383336 XML

Metadata Language: English

Resource type: Dataset

Metadata Date: 2024-05-31T09:29:07.088Z

Metadata Standard Name: NRW

Metadata Standard Version: 1.0

pointOfContact

Natural Resources Wales (NRW)

Maes-y-Ffynnon, Penrhosgarnedd, Bangor, Gwynedd, LL57 2DW, Wales

http://naturalresources.wales/?lang=en

Publishing Body

Access the portal

Full access to the portal and metadata.

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

Identification

Temporal Extent

Extent

Extent

Vertical Extent

Distribution

Quality

Data quality

Keywords

Keywords

Citation

Keywords

Citation

Keywords

Citation

Spatial Reference System

Content

Content Information

NRW Profile

Custom Elements

Constraints

Constraints

Limitations on Public Access and Use

Access Constraints Directive

Access Constraints Text

Use Constraints

Metadata

Metadata

Publishing Body