Data am gymylogrwydd dwr a dosbarthiadau dyfnder macroalgaidd ar drawslun yn afon Menai
Presentation of data and analysis of patterns of water turbidity in the Menai Strait between 1961 and 1999 as well as depth distribution patterns of macroalgae (Telegraph Cable transect) at intervals from 1956 to 1999. Analysis of any relationship between the depth distribution of macroalgae and water turbidity patterns. The purpose of this data capture was to ascertain changes in turbidity and depth distribution patterns of macroalgae.
- Dull adnabod
- Rhychwant
- Dosbarthiad
- Ansawdd
- Allweddeiriau
- System Cyfeirio Gofodol
- Cynnwys
- Cyfyngiadau
- Cynnal a chadw
- Metadata
Dull adnabod
- Dynodydd
- NRW_DS109983
- Laith Metadata
- English
- Datganiad
-
Water Turbidity - Secchi disc readings were taken at Menai Bridge Pier by staff of the Marine Science Laboratories UCNW between 1961 and 1977. The Marine Science Laboratories UCNW recommenced measurements in February 1983.Water clarity (turbidity) measurements were recorded between January 1961 and early 1978. Recordings were resumed in January 1983, with a hiatus from late 1990 until mid 1992 and relatively sparse data from then on. No Secchi disc measurements were made between 1979 and 1982. Algal Depth Distribution - Transects along a disused telegraph cable. Knight-Jones and Nelson-Smith (1956) Hoare and Peattie (1979) and annually since 1983 (NCC). Macroalgal depth distributions were established from the results of a series of surveys of the 'Telegraph Cable' transect line across the Menai Strait. Surveys on the northern shore of the Strait were made in 1956 (3 stations); 1976 (12 stations); 1983 (12 stations); 1984 (60 stations); 1985-90; 1992; 1996; 1999 (72 stations); although since 1990 data has not been collected systematically from the near shore half of the transect (30 - 40 stations). Calculation of Critical Light Level Depths Z-values calculated Series of surveys carried out across the Menai Strait. Review of original surveys and annual NCC surveys to analyse changes in algal depth distribution and turbidity.
- Dyddiad cyfeirnod y set ddata (Cyhoeddiad)
- 2001-06-30
Ystod amser
- Dyddiad cychwyn
- 1956-01-01
- Dyddiad gorffen
- 2001-12-31
- Categori pwnc
-
- Environment
- Oceans
- Biota
Rhychwant
Rhychwant
- Hyd
- Wales (WLS)
))
Maint Fertigol
- Maint allweddair MEDIN
-
benthic boundary layer
Maint Fertigol
- Gwerth lleiaf
- 0.02
- Gwerth uchaf
- 14.39
- System Gyfeirio Cydlynu Fertigol
Dosbarthiad
- Fformat - Math a Disgrifiad
-
-
Documents
(
)
- Math
-
[A] Report (MS Word) [B] Data (MS Excel), Data summaries (MS Word) [C] Tide table (Menaibr.txt)
-
Documents
(
)
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
-
Water Turbidity - Secchi disc readings were taken at Menai Bridge Pier by staff of the Marine Science Laboratories UCNW between 1961 and 1977. The Marine Science Laboratories UCNW recommenced measurements in February 1983.Water clarity (turbidity) measurements were recorded between January 1961 and early 1978. Recordings were resumed in January 1983, with a hiatus from late 1990 until mid 1992 and relatively sparse data from then on. No Secchi disc measurements were made between 1979 and 1982. Algal Depth Distribution - Transects along a disused telegraph cable. Knight-Jones and Nelson-Smith (1956) Hoare and Peattie (1979) and annually since 1983 (NCC). Macroalgal depth distributions were established from the results of a series of surveys of the 'Telegraph Cable' transect line across the Menai Strait. Surveys on the northern shore of the Strait were made in 1956 (3 stations); 1976 (12 stations); 1983 (12 stations); 1984 (60 stations); 1985-90; 1992; 1996; 1999 (72 stations); although since 1990 data has not been collected systematically from the near shore half of the transect (30 - 40 stations). Calculation of Critical Light Level Depths Z-values calculated Series of surveys carried out across the Menai Strait. Review of original surveys and annual NCC surveys to analyse changes in algal depth distribution and turbidity.
Allweddeiriau
Allweddair
- Math
- Theme
Dyfyniad
- Dyddiad (Cyhoeddiad)
- 2008-06-01
Allweddair
-
NRW Thesaurus
-
- meteorology (see also weather) (see also climate)
- marine and freshwater inventory
- marine sediments (coastal sediments) (intertidal sediments) (subtidal sediments)
- turbidity
- algal depth distribution
- mussels
- algal community composition
- distribution patterns
- macroalgae
- Menai Strait
- critical light levels
- turbidity changes
- unionidae
- 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
-
Analysis of water turbidity data and microalgal depth distributions on a transect in the Menai Strait
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 on 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.
Metadata
Metadata
- Dynodydd Ffeil
- 4f4c4942-4343-5764-6473-313039393833 XML
- Laith Metadata
- English
- Math o adnodd
- Dataset
- Dyddiad Metadata
- 2026-09-28T11:41:37.593Z
- Enw Safonol Metadata
- NRW
- Fersiwn Metadata
-
1.0