Cwm Idwal Vegetation Change Surveillance Project 1999-2004

The results of a five year surveillance project carried out in Cwm Idwal National Nature Reserve (NNR), from which grazing has been excluded on a long term experimental basis. The purpose of this data capture was to establish a detailed monitoring system to determine the long term impact of grazing removal on a range of vegetation communities; and, to determine the nature and direction of vegetation recovery in terms of its structure and composition.

Identification

Identifier
NRW_DS110473
Alternative Title
  • Prosiect goruchwylio'r newid yn llystyfiant Cwm Idwal 1999-2004
Metadata Language
English
Lineage

Attributes recorded for vegetation included percentage cover, mean and maximum height for individual strata, total cover for individual species within quadrats, estimated total cover for bryophytes and lichens. Impacts were recorded in terms of estimated dunging, shoot nibbling and erosion. Photographs were taken throughout the project to assist in the process of plot relocation, to give an impression of the type and condition of vegetation at the time of recording, and to illustrate selected general and specific subjects. Baseline survey of 30 plots was carried out autumn 1998 to early summer 1999. The first repeat survey was carried out in the autumn of 2000 (10 of the 30 plots), second repeat survey took place in 2001 (same 10 plots as in 2000), third repeat survey in 2002 (same 10 plots plus 15 others), fourth repeat survey (same 10 plots as in 2000) and in 2004 all 30 plots were resurveyed at the end of the 5 year cycle. This surveillance data covers most vegetation communities however scree, chasmophytic and tall herb ledge vegetation are not included- they are being monitored under a separate programme.
Dataset Reference Date (Publication)
2005-03-31
Owner
  Natural Resources Wales (NRW)
Maes-y-Ffynnon, Penrhosgarnedd, Bangor, Gwynedd, LL57 2DW, Wales
http://naturalresources.wales/?lang=en
Originator
  Cousins Environmental Consultants
yr Hen Ysgol, Brynrefail, Llanberis, Gwynedd, LL55 3N, Wales
http://www.caban-cyf.org/EN/tenants.asp?id=52
Originator
  Natural Resources Wales (NRW)
Maes-y-Ffynnon, Penrhosgarnedd, Bangor, Gwynedd, LL57 2DW, Wales
http://naturalresources.wales/?lang=en
 

Extent

Extent

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


 
 

Distribution

Format Type and Description
  • Documents ()

    Specification

    The full data are available in digital form, results in terms of plot means of individual quadrats for groupings based on broad divisions are presented in the report. [A] Report- paper hardcopy, Word [B] Raw data - report and quadrat data tables in Excel [C] Photographic images as hard copies

 

Quality

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

Attributes recorded for vegetation included percentage cover, mean and maximum height for individual strata, total cover for individual species within quadrats, estimated total cover for bryophytes and lichens. Impacts were recorded in terms of estimated dunging, shoot nibbling and erosion. Photographs were taken throughout the project to assist in the process of plot relocation, to give an impression of the type and condition of vegetation at the time of recording, and to illustrate selected general and specific subjects. Baseline survey of 30 plots was carried out autumn 1998 to early summer 1999. The first repeat survey was carried out in the autumn of 2000 (10 of the 30 plots), second repeat survey took place in 2001 (same 10 plots as in 2000), third repeat survey in 2002 (same 10 plots plus 15 others), fourth repeat survey (same 10 plots as in 2000) and in 2004 all 30 plots were resurveyed at the end of the 5 year cycle. This surveillance data covers most vegetation communities however scree, chasmophytic and tall herb ledge vegetation are not included- they are being monitored under a separate programme.
 

Keywords

Keywords

GEMET - INSPIRE themes, version 1.0
Type
Theme

Citation

Date (Publication)
2008-06-01
Code
geonetwork.thesaurus.external.theme.httpinspireeceuropaeutheme-theme

Keywords

NRW Thesaurus
  • Cwm Idwal
  • Cwm Idwal NNR
  • Eryri cSAC (Eryri SAC)
  • Snowdonia (Eryri)
  • grazing pressure
  • sheep grazing
  • grazing exclusions
  • surveillance
  • vegetation composition
Type
Theme

Citation

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

Spatial Reference System

Code
British National Grid (EPSG::27700)
 

Content

Content Information

NRW Profile

Custom Elements

NRW Related Title

Monitoring vegetation change in the Eryri SAC : fifth repeat survey and final report for Cwm Idwal
 

Constraints

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 on this data. NRW may release, publish or disseminate it freely.
 

Use Constraints

Use constraints type
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.
 
 
 

Metadata

Metadata

File Identifier
4f4c4942-4343-5764-6473-313130343733 XML
Metadata Language
English
Resource type
Dataset
Metadata Date
2024-05-31T09:17:50.319Z
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

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