Skomer Marine Conservation Zone ( MCZ ) - Monitoring of sponge assemblages
In 2015 Skomer Marine Nature Reserve changed designation to Skomer Marine Conservation Zone (MCZ). Skomer Marine Nature Reserve (MNR) was designated in 1990. The sponge communities at Skomer MNR have been identified as rich and diverse with over 80 species. Six are nationally scarce species and eight near the limit of their distribution. Sponges are filter feeders and therefore reliant on water quality which makes them susceptible to changes in sediment deposition. They are therefore useful biotic indicators of changes in suspended sediment and surface sedimentation rates, the cause of which might include dredge spoil dumping. The purpose of this data capture was to: - monitor the sponge assemblages in the MNR; - identify natural and anthropogenic fluctuations, - identify the presence of rare, scarce and edge of range species in the MNR.
- Identification
- Extent
- Distribution
- Quality
- Keywords
- Spatial Reference System
- Content
- Constraints
- Maintenance
- Metadata
Identification
- Identifier
- NRW_DS101857
- Alternative Title
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- Skomer Marine Conservation Zone ( MCZ ) formally a Marine Nature Reserve ( MNR ) - Monitoring of sponge assemblages
- 2007 CCW / Marineseen Skomer Marine Nature Reserve sponge monitoring survey MRCCW16600000002
- 2011 CCW Skomer Marine Nature Reserve Sponge Survey MRCCW30900000005
- GNF Ynys Sgomer - Monitro casgliadau o sbyngau
- Metadata Language
- English
- Lineage
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Transects: Four fixed transects are located at Thorn Rock. Photographs are taken from fixed positions along the transect using a stereo camera set up on a 50 x 70cm frame. The slides are analysed using a stereo viewer to count the abundance of sponge species and morphology types. Species survey: In 2003 all sponge species identified in 16, 50 x 70cm quadrats. In 2007 no quadrats were used, survey completed in the general vicinity of the 4 transects with all species being identified if possible. Species photographs were taken in the field and samples taken, where necessary, for spicule preparations. Seasonal survey from fixed quadrats: In 2005 15 1m2 quadrats were marked out at 3 sites. The quadrats each consist of 25 cells (20 X 20cm), which are photographed using a digital camera.
- Dataset Reference Date (Publication)
- 2012-12-31
Extent
Extent
- Geographic Extent
- Irish Sea
- Geographic Extent
- St. Brides Bay
- Geographic Extent
- SIR BENFRO - PEMBROKESHIRE
))
Vertical Extent
- Medin Extent Keyword
- benthic boundary layer
Vertical Extent
- Minimum value (metres)
- 20
- Maximum value (metres)
- 15
- Vertical CRS
Distribution
- Format Type and Description
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Database
()
- Specification
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[A] Excel spreadsheet [B] Digital photographs [C] Species data held in Marine Recorder MRCCW30900000005 / MRCCW16600000002
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Database
()
Quality
Data quality
- Quality Scope
- Dataset
- Lineage
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Transects: Four fixed transects are located at Thorn Rock. Photographs are taken from fixed positions along the transect using a stereo camera set up on a 50 x 70cm frame. The slides are analysed using a stereo viewer to count the abundance of sponge species and morphology types. Species survey: In 2003 all sponge species identified in 16, 50 x 70cm quadrats. In 2007 no quadrats were used, survey completed in the general vicinity of the 4 transects with all species being identified if possible. Species photographs were taken in the field and samples taken, where necessary, for spicule preparations. Seasonal survey from fixed quadrats: In 2005 15 1m2 quadrats were marked out at 3 sites. The quadrats each consist of 25 cells (20 X 20cm), which are photographed using a digital camera.
Keywords
Keywords
- Type
- Theme
Citation
- Date (Publication)
- 2008-06-01
Keywords
- NRW Thesaurus
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- sponges
- porifera
- Skomer MNR
- marine monitoring (see also marine surveys)
- morphology
- Type
- Theme
Citation
- Date (Publication)
- 2023-12-31
Keywords
- SeaDataNet Parameter Discovery Vocabulary
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- Zoobenthos taxonomic abundance
- Zoobenthos generic abundance
- Type
- Theme
Citation
- Date (Revision)
- 2021-01-06
Spatial Reference System
Content
Content Information
NRW Profile
Custom Elements
Constraints
Constraints
Limitations on Public Access and Use
- Restriction type
- Other restrictions
Access Constraints Directive
- Limitations
- no limitations
Access Constraints Text
- Other constraints
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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
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© CNC/NRW 2009 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
- 4f4c4942-4343-5764-6473-313031383537 XML
- Metadata Language
- English
- Parent Identifier
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Skomer Marine Conservation Zone ( MCZ ) - Marine Monitoring Programme Overview
NRW_DS110059
- Resource type
- Dataset
- Metadata Date
- 2024-12-09T12:31:10.985Z
- Metadata Standard Name
- NRW
- Metadata Standard Version
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1.0