Saltmarsh Features at Milford Haven 1996 - Sea Empress Survey
The Sea Empress released approximately 72,000 tonnes of crude oil and about 480 tonnes of heavy fuel oil in the period 15 to 21 Feb 1996 when grounded off Milford Haven and later while at the jetty. The coastline within Milford Haven was heavily oiled and a major clean-up operation was mounted. However, to avoid further damage, oil was not cleaned from the saltmarsh. Many of the affected saltmarshes in Milford Haven lie within Sites of Special Scientific Interest (SSSI) and also form components of candidate Special Area of Conservation (cSAC) under the Habitats Directive. As part of the response to the oil spill, the former Countryside Council for Wales (CCW) now Natural Resources Wales (NRW) commissioned a damage assessment survey of impacted saltmarshes in Milford Haven. Carry out an assessment of the possible damage to saltmarsh habitat and the associated scarce species Salicornia pusilla and Limonium humile affected by the Sea Empress oil spillage and to establish a base-line against which future changes may be kept under surveillance - this included mapping the saltmarshes using National Vegetation Classification (NVC) methodology. The survey also aimed to assess the levels of hydrocarbon pollution within the sediments of the affected saltmarshes.
- Dull adnabod
- Rhychwant
- Dosbarthiad
- Ansawdd
- Allweddeiriau
- System Cyfeirio Gofodol
- Cynnwys
- Cyfyngiadau
- Cynnal a chadw
- Metadata
Dull adnabod
- Dynodydd
- NRW_DS109884
- Teitl Amgen
-
- Damage assessment survey of saltmarsh affected by the Sea Empress oil spill
- Nodweddion morfa heli Aberdaugleddau 1996 arolwg y Sea Empress
- NVC Phase 2 survey at Milford Haven 1996
- Laith Metadata
- English
- Datganiad
-
Examination of NRW colour aerial photographs taken shortly before the spill (1992 to 1995) to assess extent of saltmarsh vegetation at that time to compare with the extent of vegetation mapped after the spill. Consideration of possible impacts of oil known to have been deposited along particular stretches of the shore. Observation on the distribution of oil during fieldwork for the current survey. However, the fieldwork started eight months after the spill and so some redistribution of oil would have occurred. A phase II NVC style survey of saltmarsh vegetation and the scarce species to provide a baseline for monitoring future change. NRW commissioned survey which contributes to an NVC Saltmarsh survey collation (see 'part of' field). Data collected by trained personnel, digitised by contractors, validated by NRW, corrections made by contractors, validated again by NRW, corrections made in-house in conjunction with relevant salt marsh specialist.
- Dyddiad cyfeirnod y set ddata (Cyhoeddiad)
- 1999-12-31
Ystod amser
- Dyddiad cychwyn
- 1996-10-31
- Dyddiad gorffen
- 1998-10-31
- Categori pwnc
-
- Environment
- Biota
Rhychwant
Rhychwant
- Hyd
- Wales (WLS)
))
Maint Fertigol
- Maint allweddair MEDIN
-
benthic boundary layer
Dosbarthiad
- Fformat - Math a Disgrifiad
-
-
Geographic Information System
(
)
- Math
-
[A] GIS products- Vegetation polygons (MapInfo Table) Site Boundaries (MapInfo Table) Survey Boundary (MapInfo Table) Quadrat points (MapInfo Table) Vegetation NVC summaries (MapInfo Table) [B] Paper report
-
Geographic Information System
(
)
Ansawdd
Ansawdd Data
- Cwmpas Ansawdd
- Dataset
- Datganiad
-
Examination of NRW colour aerial photographs taken shortly before the spill (1992 to 1995) to assess extent of saltmarsh vegetation at that time to compare with the extent of vegetation mapped after the spill. Consideration of possible impacts of oil known to have been deposited along particular stretches of the shore. Observation on the distribution of oil during fieldwork for the current survey. However, the fieldwork started eight months after the spill and so some redistribution of oil would have occurred. A phase II NVC style survey of saltmarsh vegetation and the scarce species to provide a baseline for monitoring future change. NRW commissioned survey which contributes to an NVC Saltmarsh survey collation (see 'part of' field). Data collected by trained personnel, digitised by contractors, validated by NRW, corrections made by contractors, validated again by NRW, corrections made in-house in conjunction with relevant salt marsh specialist.
Allweddeiriau
Allweddair
- Math
- Theme
Dyfyniad
- Dyddiad (Cyhoeddiad)
- 2008-06-01
Allweddair
-
NRW Thesaurus
-
- National Vegetation Classification (NVC)
- Sea Empress
- Pembrokeshire (county pre 1974)( county since 4/96)
- vegetation surveys (vegetation monitoring)(see also biologicalsurveys)
- Milford Haven
- vegetation classification
- Pembroke Dock
- vegetation (see also specific types eg.coastal or heathland vegetation and vegetation surveys)
- saltmarsh (salt-marsh) (salt marsh)
- Math
- Theme
Dyfyniad
- Dyddiad (Cyhoeddiad)
- 2024-06-19
Allweddair
-
SeaDataNet Parameter Discovery Vocabulary
-
- Habitat characterisation
- Habitat extent
- Math
- Theme
Dyfyniad
- Dyddiad (Cyhoeddiad)
- 2024-06-19
System Cyfeirio Gofodol
Cynnwys
Gwybodaeth Cynnwys
Proffil CNC
Elfennau CNC
- Teitlau cysylltiedig CNC
-
Damage assessment survey of saltmarsh affected by the Sea Empress oil spillage
Cyfyngiadau
Cyfyngiadau
Cyfyngiadau ar Fynediad a Defnydd Cyhoeddus
- Math o Gyfyngiad
- Other restrictions
Cyfarwyddeb Cyfyngiadau Mynediad
- Cyfyngiadau
- no limitations
Testun cyfyngiadau mynediad
- Cyfyngiadau eraill
-
The following data is considered OS derived data and is therefore jointly owned by NRW and the Ordnance Survey. NRW may release, publish or disseminate this data freely; providing recipients are made aware of use restrictions (See general use restrictions).
Defnyddiwch gyfyngiadau
- Cyfyngiadau Defnyddio
- Other restrictions
- Cyfyngiadau eraill
-
© CNC/NRW and © Crown copyright [1999]. All rights reserved. Natural Resources Wales, AC0000849444 Third parties seeking to re-use this data require a Licence issued by NRW. It allows re-use, reproduction and dissemination in any format or medium but only for non-commercial purposes, according to the terms and conditions of the Licence. Those seeking commercial re-use require a commercial licence available from the OS.
Metadata
Metadata
- Dynodydd Ffeil
- 4f4c4942-4343-5764-6473-313039383834 XML
- Laith Metadata
- English
- Dynodydd Rhiant
-
Phase 2 Saltmarsh Survey of Wales
NRW_DS108800
- Math o adnodd
- Dataset
- Dyddiad Metadata
- 2024-09-30T14:51:33.219Z
- Enw Safonol Metadata
- NRW
- Fersiwn Metadata
-
1.0