Macroinvertebrates in the Glaslyn / Dwyryd Estuary
This dataset contains the results of a macro-invertebrate survey of the Glaslyn/Dwyryd estuary undertaken in 1978 in order to better understand the ability of the estuary to receive wading birds that may be displaced by barrage construction. The purpose of this data capture was to assess the capacity of the estuary to receive wading birds that might be displaced from other estuaries on the Irish Sea flyway by barrage construction. Data capture also helped to obtain data relevant to the management of the adjacent Morfa Harlech National Nature Reserve and enabled collection of data on 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
- Teitl Amgen
-
- Macroinfertebratau yn Aber Dwyryd / Glaslyn
- Laith Metadata
- English
- Datganiad
-
82 sampling stations were established across the estuary. At each station five core samples were taken. Four were washed through a sieve and the portion retained was preserved in 5% formalin. These were then examined in the laboratory with the animals present counted and identified. The percentage volume of fines was also determined and a measure of organic content taken. The fifth core sample was bagged and preserved for sediment analysis. Salinity measurements of the estuary water were obtained for a high spring and a high neap tide. This forms part of a series of studies on the estuaries of Gwynedd made partly to assess their capacity to receive 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
- Fformat - Math a Disgrifiad
-
-
Database
Database
()
- Math
-
[A] Hardcopy report. [B] Available in JNCC's copy of Marine Recorder (JNCCMNCR10000633).
-
Database
Database
()
Ansawdd
Ansawdd Data
- Cwmpas Ansawdd
- Dataset
- Datganiad
-
82 sampling stations were established across the estuary. At each station five core samples were taken. Four were washed through a sieve and the portion retained was preserved in 5% formalin. These were then examined in the laboratory with the animals present counted and identified. The percentage volume of fines was also determined and a measure of organic content taken. The fifth core sample was bagged and preserved for sediment analysis. Salinity measurements of the estuary water were obtained for a high spring and a high neap tide. This forms part of a series of studies on the estuaries of Gwynedd made partly to assess their capacity to receive wading birds.
Allweddeiriau
Allweddair
- Math
- Theme
Dyfyniad
- Dyddiad (Cyhoeddiad)
- 2008-06-01
Allweddair
- NRW Thesaurus
-
- estuaries (see also specific estuary names)
- Glaslyn Dwyryd estuary
- macroinvertebrates
- marine invertebrates
- marine sediments (coastal sediments) (intertidal sediments) (subtidal sediments)
- wading birds
- Math
- Theme
Dyfyniad
- Dyddiad (Cyhoeddiad)
- 2023-12-31
Allweddair
- SeaDataNet Parameter Discovery Vocabulary
-
- Zoobenthos taxonomic abundance
- Bird behaviour
- Math
- Theme
Dyfyniad
- Dyddiad (Adolygu)
- 2021-01-06
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.
Metadata
Metadata
- Dynodydd Ffeil
- 4f4c4942-4343-5764-6473-313131313437 XML
- Laith Metadata
- English
- Math o adnodd
- Dataset
- Dyddiad Metadata
- 2024-05-31T09:39:38.255Z
- Enw Safonol Metadata
- NRW
- Fersiwn Metadata
-
1.0