Understanding the likely scale of deterioration of Marine Protected Area features due to coastal squeeze: Part 2

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To complete the coastal squeeze assessments a series of geospatial layers and accompanying spreadsheets were created as part of a project to understand the likely scale of deterioration of Marine Protected Area features due to coastal squeeze.


Coastal squeeze and natural squeeze was calculated for habitats at a national scale for the whole of the Welsh coastline, as well as for smaller delineations of the coastline. The potential scale of habitat deterioration due to coastal squeeze was then reported:


· Nationally;

· Against individual MPAs; and

· Against MPA designations amalgamated across Wales:

o SACs;

o SSSIs;

o SPAs; and

o Ramsar sites.


Coastal squeeze has been assessed for three timeframes (epochs):

· 2025 to 2055 (30 years) – Equivalent to SMP2 medium-term epoch;

· 2055 to 2105 (50 years) – Equivalent to SMP2 long-term epoch; and

· 2105 to 2155 (50 years) – New long-term epoch.

Identification

Dynodydd
Identifier
NRW_DS161284
Teitl Amgen
Alternative Title
Laith Metadata
Metadata Language
English
Lineage

The project applies standard predictive hypsometric analysis to calculate the changes in tidal frame around the Welsh coast as a result of SLR. These tidal frames are calculated from a newly created national Digital Terrain Model (DTM). Present-day habitat maps are then used to provide a more site-specific assessment of the habitats present, and hence how they may change over time. Further information on the habitat datalayers used in the assessment can be found in the Volume 1 Report.


The coastal squeeze and natural squeeze assessments are then undertaken. The quantification of coastal squeeze and natural squeeze is calculated:

· Nationally;

· Against SMP2 Policy Unit (PU); and

· Against individual Assessment Units.


In each case, coastal squeeze and natural squeeze is calculated for defined Habitat Groups (see Section 2.2). An assessment of coastal and natural squeeze across the MPA network has then been undertaken. The potential scale of deterioration of MPAs due to coastal squeeze is reported against:


· Individual MPAs; and

· MPA designations amalgamated across Wales:

o SACs;

o SSSIs;

o SPAs; and

o Ramsar sites.


The derived data products are vast and complex and to help users assess and interpret the data they should review section 6 of the accompanying report which will highlight frequently encountered observations.
Additional Information

Oaten J, Finch D, Frost N 2024. Understanding the likely scale of deterioration of Marine Protected Area features due to coastal squeeze: Volume 2 – Results & Discussion. NRW Evidence Report No: 789, 110pp, Natural Resources Wales, Bangor
Dyddiad cyfeirnod y set ddata (Cyhoeddiad)
Dataset Reference Date (Publication)
2026-04-01
Perchennog
Owner
  Natural Resources Wales (NRW) -
Maes-y-Ffynnon, Penrhosgarnedd, Bangor, Gwynedd, LL57 2DW, Wales
http://naturalresources.wales/?lang=en
Cychwynnwr
Originator
  ABP Marine Environmental Research Ltd -
Suite B, Waterside House, Town Quay, Southampton, SO14 2AQ, England
http://www.abpmer.co.uk/
 

Extent

Extent

Hyd
Geographic Extent
Wales (WLS)
N
W
E
S
Map representing the geographic extent of the dataset


 
 

Distribution

Dosbarthiad
Distribution

Fformat - Math a Disgrifiad
Format Type and Description
  • Delimited ( Unknown )

    Specification

    Microsoft Excel Outputs

  • Documents ( Unknown )

    Specification

    Evidence Report in MS Word or PDF Format

  • Geographic Information System ( )

    Specification

    ESRI Feature Class

 

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 project applies standard predictive hypsometric analysis to calculate the changes in tidal frame around the Welsh coast as a result of SLR. These tidal frames are calculated from a newly created national Digital Terrain Model (DTM). Present-day habitat maps are then used to provide a more site-specific assessment of the habitats present, and hence how they may change over time. Further information on the habitat datalayers used in the assessment can be found in the Volume 1 Report.


The coastal squeeze and natural squeeze assessments are then undertaken. The quantification of coastal squeeze and natural squeeze is calculated:

· Nationally;

· Against SMP2 Policy Unit (PU); and

· Against individual Assessment Units.


In each case, coastal squeeze and natural squeeze is calculated for defined Habitat Groups (see Section 2.2). An assessment of coastal and natural squeeze across the MPA network has then been undertaken. The potential scale of deterioration of MPAs due to coastal squeeze is reported against:


· Individual MPAs; and

· MPA designations amalgamated across Wales:

o SACs;

o SSSIs;

o SPAs; and

o Ramsar sites.


The derived data products are vast and complex and to help users assess and interpret the data they should review section 6 of the accompanying report which will highlight frequently encountered observations.
 

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
  • marine protected areas(marine consultation areas)(sensitive marine areas)seealso marine conservation&marine nature reserve
  • coastal squeeze
Math
Type
Theme
Theme

Dyfyniad
Citation

Dyddiad (Cyhoeddiad)
Date (Publication)
2026-03-04
Code
geonetwork.thesaurus.local.theme.converted_nrw-keywords
 

Spatial Reference System

Code
British National Grid (EPSG:27700)
 

Content

Gwybodaeth Cynnwys
Content Information

Proffil CNC
NRW Profile

Elfennau CNC
Custom Elements

 

Constraints

Constraints

Limitations on Public Access and Use

Math o Gyfyngiad
Restriction type
Other restrictions
Other restrictions
 

Access Constraints Directive

Limitations
noLimitations
 

Access Constraints Text

Other constraints

There are no access restrictions on 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. Contains data derived from © UKHO. All rights Reserved.
 

Licence

Other constraints
Open Government Licence
 
 
 

Metadata

Metadata

Dynodydd Ffeil
File Identifier
4f4c4942-4343-5764-6473-313631323834 XML
Laith Metadata
Metadata Language
English
Math o adnodd
Resource type
Dataset
Dataset
Dyddiad Metadata
Metadata Date
2026-07-07T09:40:20.148Z
Enw Safonol Metadata
Metadata Standard Name
NRW
Fersiwn Metadata
Metadata Standard Version

1.0

Pwynt Cyswllt
pointOfContact
  Natural Resources Wales -
Maes y Ffynnon , Bangor , LL57 2DW , Wales
 
 

Publishing Body

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