Skomer Island National Nature Reserve (NNR) - Resurvey of Lichen Quadrats
This dataset is made up of the results from a survey of lichen distribution and cover on Skomer Island following the Sea Empress oil spill. Pembrokeshire is of the highest significance for coastal saxicolous and terricolous lichens and Skomer is a key site in Countryside Council for Wales’ (CCW's) lichen monitoring programme.
After the Sea Empress oil spill SEEEC decided the Skomer lichens should be re-surveyed. Record type, distribution and extent of lichens within the 40 quadrats established on Skomer Island. Compare these records with those from earlier surveys and determine the nature of any changes that have taken place. Interpret any changes as far as possible, with special consideration given to those that may be attributable to oil pollution. Re-mark quadrats by indicating their precise position.
- Identification
- Extent
- Distribution
- Quality
- Keywords
- Spatial Reference System
- Content
- Constraints
- Maintenance
- Metadata
Identification
- Identifier
- NRW_DS110095
- Metadata Language
- English
- Lineage
-
Skomer was re-visited during the 6th - 12th April 1997. Quadrats were used for counts. The location and quadrat photographs were taken and recorded as in 1991. Two sizes, 20x30 cm and 10x15 cm with steel wires giving 100 intersection points, were used as defined in Purvis (1992).
All photography was carried out using an Olympus OM-2 camera on a tripod. Monitoring efforts and impact assessment following the Sea Empress oil spill. An initial lichen survey was perfomed by Wolseley and James 1988, in 1991 further quadrats were surveyed by the Natural History Museum and a subsequent re-survey was performed in 1994.
- Dataset Reference Date (Publication)
- 1997-05-31
Extent
Extent
- Geographic Extent
- Wales (WLS)
- Geographic Extent
- SIR BENFRO - PEMBROKESHIRE
))
Vertical Extent
- Medin Extent Keyword
- soil and sediment boundary layer
Distribution
Distribution
- Format Type and Description
-
-
Image
(
jpg
)
- Specification
-
[B] Images (jpg) - corrupted, missing from both paper copy and download pdf version
-
Documents
(
MS Word
)
- Specification
-
[A] Report (MS Word)
-
Image
(
jpg
)
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
-
This dataset has not been assessed for conformance to the referenced INSPIRE regulation.
- Degree
- false
- Lineage
-
Skomer was re-visited during the 6th - 12th April 1997. Quadrats were used for counts. The location and quadrat photographs were taken and recorded as in 1991. Two sizes, 20x30 cm and 10x15 cm with steel wires giving 100 intersection points, were used as defined in Purvis (1992).
All photography was carried out using an Olympus OM-2 camera on a tripod. Monitoring efforts and impact assessment following the Sea Empress oil spill. An initial lichen survey was perfomed by Wolseley and James 1988, in 1991 further quadrats were surveyed by the Natural History Museum and a subsequent re-survey was performed in 1994.
Keywords
Keywords
- Type
- Theme
Citation
- Date (Publication)
- 2008-06-01
Keywords
-
NRW Thesaurus
-
- quadrats
- marine and freshwater inventory
- coastal lichens
- Skomer (Skomer Island)
- Sea Empress
- survey methods (survey techniques) (survey) (surveying)
- Type
- Theme
Citation
- Date (Publication)
- 2026-07-07
Keywords
- Type
- Theme
Citation
- Date (Publication)
- 2024-06-19
Keywords
-
IPSV Subjects List
-
- Oil spillage
- Type
- Theme
Citation
- Date (Publication)
- 2020-11-18
Spatial Reference System
Content
Content Information
NRW Profile
Custom Elements
- NRW Related Title
-
Report of resurvey of lichen quadrats on Skomer Island NNR
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 to this data. NRW may release, publish or disseminate it freely.
Use Constraints
- Use constraints type
- Other restrictions
- Other constraints
-
© CNC/NRW 1997. 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
- File Identifier
- 4f4c4942-4343-5764-6473-313130303935 XML
- Metadata Language
- English
- Parent Identifier
-
Monitoring of golden hair lichen (Teloschistes flavicans) in Pembrokeshire following the Sea Empress oil spill
NRW_DS110336
- Resource type
- Dataset
- Metadata Date
- 2026-07-21T13:44:59.632Z
- Metadata Standard Name
- NRW
- Metadata Standard Version
-
1.0