Astudiaeth awtecolegol o Osilinus lineatus (Monodonta lineata) yn yr ardal yr effeithiodd gollyngiad olew'r Sea Empress arni, yn ystod 1996 a 1997
After the oil spill from the Sea Empress investigations were initiated into the biota of many of the habitats affected. One of the species known to be susceptible to oil pollution, that had been studied previously and that would not be adequately investigated by the proposed investigations was the toothed or thick top shell Osilinus lineatus, an animal commonly found on shores in western Britain. Data collected in order to establish the population age and size structure at each study site and allow an assessment of the impact the Sea Empress oil spill has had on these populations of Osilinus linaetus. As of 1 April 2013, the Countryside Council for Wales, Environment Agency Wales and Forestry Commission Wales became Natural Resources Wales / Cyfoeth Naturiol Cymru.
- Dull adnabod
- Rhychwant
- Dosbarthiad
- Ansawdd
- Allweddeiriau
- System Cyfeirio Gofodol
- Cynnwys
- Cyfyngiadau
- Cynnal a chadw
- Metadata
Dull adnabod
- Dynodydd
- NRW_DS110102
- Teitl Amgen
-
- Laith Metadata
- English
- Datganiad
-
In August 1996 six sites were visited in five days to set up sample populations of Osilinus lineatus to investigate the population size, distribution and age structure at sites where such studies had previously been carried out albeit over a decade ago. This first fieldwork in 1996 established that it would be necessary to allow one tide per site and that realistically after the end of August that means one day for each site because of shortening day length. A simple Lincoln index, mark-release-recapture technique was used to estimate the size of the population from which the survey samples were taken. In September 1997 all of the sites were revisited to sample the population, and where reasonably large samples could be found, they were marked and released. Fieldwork in 1997 included additional checks on 1996 recruitment as the growing animals became easier to spot as they changed their habits and moved around into less cryptic micro habitats. Between 1982 and 1983 a programme of experimental field work was conducted to complement the fixed, interrupted, belt transect monitoring studies of rocky shores in Milford Haven. The only data associated with this project is held within the report.
- Dyddiad cyfeirnod y set ddata (Cyhoeddiad)
- 1999-02-28
Ystod amser
- Dyddiad cychwyn
- 1996-02-01
- Dyddiad gorffen
- 1997-12-31
- Categori pwnc
-
- Biota
Rhychwant
Rhychwant
- Hyd
- England (ENG)
- Hyd
- Wales (WLS)
))
Maint Fertigol
- Maint allweddair MEDIN
-
benthic boundary layer
Dosbarthiad
- Fformat - Math a Disgrifiad
-
-
Documents
(
)
- Math
-
Report (MS Word, PDF-format)
-
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
-
In August 1996 six sites were visited in five days to set up sample populations of Osilinus lineatus to investigate the population size, distribution and age structure at sites where such studies had previously been carried out albeit over a decade ago. This first fieldwork in 1996 established that it would be necessary to allow one tide per site and that realistically after the end of August that means one day for each site because of shortening day length. A simple Lincoln index, mark-release-recapture technique was used to estimate the size of the population from which the survey samples were taken. In September 1997 all of the sites were revisited to sample the population, and where reasonably large samples could be found, they were marked and released. Fieldwork in 1997 included additional checks on 1996 recruitment as the growing animals became easier to spot as they changed their habits and moved around into less cryptic micro habitats. Between 1982 and 1983 a programme of experimental field work was conducted to complement the fixed, interrupted, belt transect monitoring studies of rocky shores in Milford Haven. The only data associated with this project is held within the report.
Allweddeiriau
Allweddair
- Math
- Theme
Dyfyniad
- Dyddiad (Cyhoeddiad)
- 2008-06-01
Allweddair
-
NRW Thesaurus
-
- marine and freshwater inventory
- toothed shell (thick top shell)
- population age structure
- Milford Haven
- population size structure
- mark-release-recapture
- thick topshell
- osilinus lineatus
- Sea Empress
- lincoln index
- monodonta lineata (da Costa)
- 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
-
An autecological study of Osilinus lineatus in the area affected by the Sea Empress oil spill
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
- 4f4c4942-4343-5764-6473-313130313032 XML
- Laith Metadata
- English
- Math o adnodd
- Dataset
- Dyddiad Metadata
- 2026-09-28T13:32:06.011Z
- Enw Safonol Metadata
- NRW
- Fersiwn Metadata
-
1.0