Macroinfertebratau yn Aber Dwyryd / Glaslyn
This dataset contains the results of a macroinvertebrate survey of the Glaslyn/Dwyryd Estuary undertaken in 1978 to improve understanding of the estuary's capacity to support wading birds that might be displaced by barrage construction. The survey was designed to assess the ability of the estuary to accommodate wading bird populations displaced from other estuaries along the Irish Sea flyway. The study also provided information relevant to the management of the adjacent Morfa Harlech National Nature Reserve and increased knowledge of the marine fauna of the area.
- Dull adnabod
- Rhychwant
- Dosbarthiad
- Ansawdd
- Allweddeiriau
- System Cyfeirio Gofodol
- Cynnwys
- Cyfyngiadau
- Cynnal a chadw
- Metadata
Dull adnabod
- Dynodydd
- NRW_DS111147
- Laith Metadata
- English
- Datganiad
-
A total of 82 sampling stations were established across the estuary. At each station, five core samples were collected. Four samples were washed through a sieve, and the retained material was preserved in 5% formalin. These samples were subsequently examined in the laboratory, where the animals present were identified and counted. The percentage volume of fine sediment was determined, and a measure of organic content was recorded. The fifth core sample was retained for sediment analysis. Salinity measurements of estuarine water were obtained during both a high spring tide and a high neap tide. This survey forms part of a series of studies of the Gwynedd estuaries undertaken to assess their capacity to support wading birds.
- Dyddiad cyfeirnod y set ddata (Cyhoeddiad)
- 1978-07-31
Ystod amser
- Dyddiad cychwyn
- 1978-01-01
- Dyddiad gorffen
- 1978-03-31
- Categori pwnc
-
- Biota
Rhychwant
Rhychwant
- Hyd
- GWYNEDD - GWYNEDD
- Hyd
- Wales (WLS)
))
Maint Fertigol
- Maint allweddair MEDIN
- soil and sediment
Dosbarthiad
Dosbarthiad
- Fformat - Math a Disgrifiad
-
-
Database
(
)
- Math
-
Available in JNCC's copy of Marine Recorder (JNCCMNCR10000633).
-
Documents
(
)
- Math
-
Hardcopy report
-
Database
(
)
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
-
A total of 82 sampling stations were established across the estuary. At each station, five core samples were collected. Four samples were washed through a sieve, and the retained material was preserved in 5% formalin. These samples were subsequently examined in the laboratory, where the animals present were identified and counted. The percentage volume of fine sediment was determined, and a measure of organic content was recorded. The fifth core sample was retained for sediment analysis. Salinity measurements of estuarine water were obtained during both a high spring tide and a high neap tide. This survey forms part of a series of studies of the Gwynedd estuaries undertaken to assess their capacity to support wading birds.
Allweddeiriau
Allweddair
- Math
- Theme
Dyfyniad
- Dyddiad (Cyhoeddiad)
- 2008-06-01
Allweddair
-
NRW Thesaurus
-
- estuaries (see also specific estuary names)
- wading birds
- marine sediments (coastal sediments) (intertidal sediments) (subtidal sediments)
- marine invertebrates
- macroinvertebrates
- Glaslyn Dwyryd estuary
- Math
- Theme
Dyfyniad
- Dyddiad (Cyhoeddiad)
- 2026-08-27
Allweddair
- Math
- Theme
Dyfyniad
- Dyddiad (Cyhoeddiad)
- 2024-06-19
System Cyfeirio Gofodol
Cynnwys
Gwybodaeth Cynnwys
Proffil CNC
Elfennau CNC
- Teitlau cysylltiedig CNC
-
Survey of macroinvertebrate populations in the Glaslyn / Dwyryd estuary complex
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 1991 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.
Datganiad Priodoli
- Cyfyngiadau eraill
-
Contains Natural Resources Wales information © Natural Resources Wales and Database Right. All rights Reserved.
Metadata
Metadata
- Dynodydd Ffeil
- 4f4c4942-4343-5764-6473-313131313437 XML
- Laith Metadata
- English
- Math o adnodd
- Dataset
- Dyddiad Metadata
- 2026-10-02T09:38:21.567Z
- Enw Safonol Metadata
- NRW
- Fersiwn Metadata
-
1.0