(Drafft) Monitro Gwely Marl yn nyfrffordd Aberdaugleddau, Sir Benfro, 2010
Maerl is a collective term for several species of red seaweed, with hard, chalky skeletons. It is rock hard and, unlike other seaweeds, it grows as unattached rounded nodules or short, branched shapes on the seabed. Like all seaweeds, maerl needs sunlight to grow, and it only occurs to a depth of about 20 m. Maerl can form large beds, when the conditions are right – a fast tidal flow or sufficient wave action to remove fine sediments, but not strong enough to break the brittle maerl branches. Within these beds, layers of dead maerl build up with a thin layer of pink, living maerl on the top. Maerl beds are classed as a UK Biodiversity Action Plan (BAP) priority habitat, listed under the Annex 1 of the Habitats Directive, is on the list of OSPAR's List of Threatened and/or Declining Species and Habitats (Region 3 - Celtic Sea), and the habitat supports a number of UKBAP priority species, and species of principal important for the purpose of conservation of biodiversity under the Natural Environment and Rural Communities Act 2006. This data contains the results of a monitoring exercise undertaken to assess the status of the maerl bed in the Haven for the reporting purposes, and also to compare with baseline data gathered in 2005 to identify any trends. The information contributes to UK BAP monitoring and reporting obligations and to the management of the Pembrokeshire Marine Special Area of Conservation (SAC). This dataset forms part of repeated monitoring of 6 sites within the maerl bed in the Milford Haven waterway. The initial surveys were carried out in 2005.
- Dull adnabod
- Rhychwant
- Dosbarthiad
- Ansawdd
- Allweddeiriau
- System Cyfeirio Gofodol
- Cynnwys
- Cyfyngiadau
- Cynnal a chadw
- Metadata
Dull adnabod
- Dynodydd
- NRW_DS114753
- Teitl Amgen
-
- 2010 DRAFT CCW Monitoring of a Maerl Bed in the Milford Haven Waterway, Pembrokeshire, 2010 (MRCCW31200000003)
- Laith Metadata
- English
- Datganiad
-
This project was the first repeat of a long term monitoring study (by divers) of the epibiota, infauna and sediment characteristics at six sites within the Milford Haven maerl bed. The following methods were used: - In situ quadrat cell frequency counts. - In situ cores for Particle Size Analysis. - In situ cores for infaunal analysis. - In situ surface sampling for microscopic identification of epiflora. The data quality if considered to be high. There is a high confidence in taxonomic skills of contractor and management of sub-contractors with regards to standards in taxonomy throughout the survey. This project was the first repeat of a long term monitoring study (by divers) of the epibiota, infauna and sediment characteristics at six sites within the Milford Haven maerl bed.
- Dyddiad cyfeirnod y set ddata (Cyhoeddiad)
- 2011-12-01
Ystod amser
- Dyddiad cychwyn
- 2010-08-18
- Dyddiad gorffen
- 2010-10-01
- Categori pwnc
-
- Biota
Rhychwant
Rhychwant
- Hyd
- Irish Sea
- Hyd
- Carmarthen Bay
- Hyd
- Wales (WLS)
))
Maint Fertigol
- Maint allweddair MEDIN
-
benthic boundary layer
Maint Fertigol
- Gwerth lleiaf
- 3.6
- Gwerth uchaf
- 7
- System Gyfeirio Cydlynu Fertigol
Dosbarthiad
- Fformat - Math a Disgrifiad
-
-
Database
(
Marine Recorder Online - Version 2.09.02
)
- Math
-
Marine Recorder
-
Database
(
Marine Recorder Online - Version 2.09.02
)
Ansawdd
Ansawdd Data
- Cwmpas Ansawdd
- Dataset
- Cydymffurfiad
- 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
- Eglurhad
-
This dataset has not been assessed for conformance to the referenced INSPIRE regulation.
- Gradd
- false
- Datganiad
-
This project was the first repeat of a long term monitoring study (by divers) of the epibiota, infauna and sediment characteristics at six sites within the Milford Haven maerl bed. The following methods were used: - In situ quadrat cell frequency counts. - In situ cores for Particle Size Analysis. - In situ cores for infaunal analysis. - In situ surface sampling for microscopic identification of epiflora. The data quality if considered to be high. There is a high confidence in taxonomic skills of contractor and management of sub-contractors with regards to standards in taxonomy throughout the survey. This project was the first repeat of a long term monitoring study (by divers) of the epibiota, infauna and sediment characteristics at six sites within the Milford Haven maerl bed.
Allweddeiriau
Allweddair
- Math
- Theme
Dyfyniad
- Dyddiad (Cyhoeddiad)
- 2008-06-01
Allweddair
-
NRW Thesaurus
-
- Milford Haven
- Pembrokeshire Marine SAC
- Maerl beds
- Milford Haven Waterway
- Marine Recorder
- Math
- Theme
Dyfyniad
- Dyddiad (Cyhoeddiad)
- 2026-10-19
Allweddair
- Math
- Theme
Dyfyniad
- Dyddiad (Cyhoeddiad)
- 2024-06-19
System Cyfeirio Gofodol
Cynnwys
Gwybodaeth Cynnwys
Proffil CNC
Elfennau CNC
Cyfyngiadau
Cyfyngiadau
Cyfyngiadau ar Fynediad a Defnydd Cyhoeddus
- Math o Gyfyngiad
- Other restrictions
Cyfarwyddeb Cyfyngiadau Mynediad
- Cyfyngiadau
- no limitations
Testun cyfyngiadau mynediad
- Cyfyngiadau eraill
-
There are no access restrictions to this data. NRW may release, publish or disseminate it freely.
Defnyddiwch gyfyngiadau
- Cyfyngiadau Defnyddio
- Other restrictions
- Cyfyngiadau eraill
-
© 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.
Datganiad Priodoli
- Cyfyngiadau eraill
-
Contains Natural Resources Wales information © Natural Resources Wales and Database Right. All rights Reserved.
Math o Drwydded
- Cyfyngiadau eraill
- Open Government Licence
Metadata
Metadata
- Dynodydd Ffeil
- 4f4c4942-4343-5764-6473-313134373533 XML
- Laith Metadata
- English
- Dynodydd Rhiant
-
Natural Resources Wales (NRW) Marine Benthic Species and Habitat Collation Held in Marine Recorder
NRW_DS114501
- Math o adnodd
- Dataset
- Dyddiad Metadata
- 2026-10-26T11:10:26.848Z
- Enw Safonol Metadata
- NRW
- Fersiwn Metadata
-
1.0