Seabirds at Sea Evidence Base
GIS layers showing the abundance and distribution of seabirds in welsh waters. The datasets consists of the raw data showing observations of all seabirds and derived grids showing the density of flying and sitting species on a 3km grid scale and the survey coverage. The purpose of this data capture was to collate data from ESAS and WWT Consulting databases to produce combined database of birds recorded from surveys of Welsh waters. Other sources identified were also consulted to produce the most complete representation of the observed distribution of seabirds.
- Dull adnabod
- Rhychwant
- Dosbarthiad
- Ansawdd
- Allweddeiriau
- System Cyfeirio Gofodol
- Cynnwys
- Cyfyngiadau
- Cynnal a chadw
- Metadata
Dull adnabod
- Dynodydd
- NRW_DS114722
- Teitl Amgen
-
- WWT and ESAS combined seabirds at sea
- Adar mor sylfaen tystiolaeth
- Collated seabird distribution and abundance data in Welsh waters
- Laith Metadata
- English
- Datganiad
-
The two main sources of seabird distribution and abundance data for welsh waters are held in JNCC's European Seabirds at Sea (ESAS) database and the Wildfowl and Wetlands (Consulting) Ltd marine aerial surveys database. A collation for Wales was created by producing a database containing all the fields from both datasets. This was then populated. The data was 'cleaned' to remove non-bird objects and data. A GIS layer was produced and supplied from the database. Density and abundance maps as well as survey coverage were derived from the database using a 3km by 3km grid created in ArcGIS. A detailed methodology and the approach taken is described in the WWT Report "Collating seabird distribution and abundance data in Welsh waters to support provision of strategic advice on the relative risk of deployment of tidal stream devices". Originally the density maps were produced to provide evidence about mobile species and their sensitivity to tidal stream devices (See NRW project 309 media 1230). This dataset is an update based on the same methodology but includes all gull species which were not required for the renewables work. The selection of the highest value from the combined JNCC ESAS and WWT datasets for each grid cell is in line with the Precautionary Principle. This may lead to an overestimation of abundance in some grid cells but will reflect the highest potential use of each cell by diving bird species. In addition diving bird density values for each grid cell were standardised according to survey effort so that those grid cells for which there is a very low level of effort may have an overestimation of overall abundance. It is important to interpret these evidence layers in conjunction with information on the underlying survey effort.
- Dyddiad cyfeirnod y set ddata (Cyhoeddiad)
- 2010-07-01
Ystod amser
- Dyddiad cychwyn
- 1980-08-08
- Dyddiad gorffen
- 2009-08-07
- Categori pwnc
-
- Biota
))
Dosbarthiad
Dosbarthiad
- Fformat - Math a Disgrifiad
-
-
Geographic Information System
(
)
- Math
-
Data exists as MapInfo GIS layers and in it's native ArcGIS format
-
Geographic Information System
(
)
- Lleolwr Adnoddau
-
Download Data and Web Services
World Wide Web page
- Lleolwr Adnoddau
-
Web Mapping Service
World Wide Web page
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
-
The two main sources of seabird distribution and abundance data for welsh waters are held in JNCC's European Seabirds at Sea (ESAS) database and the Wildfowl and Wetlands (Consulting) Ltd marine aerial surveys database. A collation for Wales was created by producing a database containing all the fields from both datasets. This was then populated. The data was 'cleaned' to remove non-bird objects and data. A GIS layer was produced and supplied from the database. Density and abundance maps as well as survey coverage were derived from the database using a 3km by 3km grid created in ArcGIS. A detailed methodology and the approach taken is described in the WWT Report "Collating seabird distribution and abundance data in Welsh waters to support provision of strategic advice on the relative risk of deployment of tidal stream devices". Originally the density maps were produced to provide evidence about mobile species and their sensitivity to tidal stream devices (See NRW project 309 media 1230). This dataset is an update based on the same methodology but includes all gull species which were not required for the renewables work. The selection of the highest value from the combined JNCC ESAS and WWT datasets for each grid cell is in line with the Precautionary Principle. This may lead to an overestimation of abundance in some grid cells but will reflect the highest potential use of each cell by diving bird species. In addition diving bird density values for each grid cell were standardised according to survey effort so that those grid cells for which there is a very low level of effort may have an overestimation of overall abundance. It is important to interpret these evidence layers in conjunction with information on the underlying survey effort.
Allweddeiriau
Allweddair
- Math
- Theme
Dyfyniad
- Dyddiad (Cyhoeddiad)
- 2008-06-01
Allweddair
-
NRW Thesaurus
-
- distributions
- abundance
- sitting
- Wildfowl and Wetlands Trust (WWT)
- seabirds (see also specific species)(see also shorebirds)
- European Seabirds at Sea (ESAS)
- Math
- Theme
Dyfyniad
- Dyddiad (Cyhoeddiad)
- 2024-06-13
Allweddair
-
SeaDataNet Parameter Discovery Vocabulary
-
- Bird taxonomy-related abundance per unit area of surface
- Math
- Theme
Dyfyniad
- Dyddiad (Cyhoeddiad)
- 2024-03-28
Allweddair
-
IPSV Subjects List
-
- Flying
- Birds
- Math
- Theme
Dyfyniad
- Dyddiad (Cyhoeddiad)
- 2020-11-18
Allweddair
-
NRW SMNR Keywords
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- Ecosystem (SMNR)
- Marine (SMNR)
- Sustainable Management of Natural Resources (SMNR)
- Coastal Margins (SMNR)
- Animals, Plants and Other Organisms (SMNR)
- Sea and Coast (SMNR)
- Management Areas (SMNR)
- Natural Resources (Incl. Features and Processes) (SMNR)
- Math
- Theme
Dyfyniad
- Dyddiad (Cyhoeddiad)
- 2024-06-19
System Cyfeirio Gofodol
Cynnwys
Gwybodaeth Cynnwys
Proffil CNC
Elfennau CNC
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 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. Attribution statement: Contains Natural Resources Wales information © Natural Resources Wales and Database Right. All rights Reserved.
Datganiad Priodoli
- Cyfyngiadau eraill
- Open Government Licence (OGL)
Math o Drwydded
- Cyfyngiadau eraill
- Open Government Licence (OGL)
Metadata
Metadata
- Dynodydd Ffeil
- 4f4c4942-4343-5764-6473-313134373232 XML
- Laith Metadata
- English
- Math o adnodd
- Dataset
- Dyddiad Metadata
- 2024-12-09T13:00:21.323Z
- Enw Safonol Metadata
- NRW
- Fersiwn Metadata
-
1.0