Direct Link
File: 'GreySealDistributionPolygons.zip'
IMIS metadata and citations
Grey Seal Distribution Polygons [dasid=7870] show more
File properties
Filename GreySealDistributionPolygons.zip
Direct link https://mda.vliz.be/directlink.php?fid=VLIZ_00000804_613762c25e03b056242317
Datatype Biotic data
MIMEtype application/x-zip-compressed
Authors Deirdre ODriscoll
Dataprovider Deirdre ODriscoll
Email Dataprovider deirdre.odriscoll@marine.ie
Conditions of use
Creationdate
Submitter Beja Joana
Submit date 2021-09-07 13:01:54
Archived by Beja Joana
Archive date 2021-09-07 13:56:45
Path EMODnet - Public/Data products/
Start year 2013
End year 2021
Summary These grid data were derived from National Parks and Wildlife Service cetacean surveys within the Irish MSFD area and the EEA-10km GRID. The grid shows the current distribution of Grey seal (Halichoreus grypus) in Irish coastal and marine waters.
Description The data were collected for the purposes of 2019 reporting under Article 17 of the EU Habitats Directive.
Polygon shapefile showing the 10km grid cell-based current distribution of the Annex II seal species. The following data sources were used to determine their distribution: Morris, C. D. and Duck C. D. (2019) Aerial thermal imaging survey of seals in Ireland, 2017-2018. Report (unpublished) for the National Parks and Wildlife Service of the Department of Culture, Heritage and the Gaeltacht. NPWS (2018) Unpublished data collected during local site surveillance and regional monitoring of Ireland's seal populations along the east-southeast, west-southeast and northwest coasts between 2009 and 2018. Supporting Data: Data collected during the IWDG ISCOPE I and II projects, the IWDG/GMIT Marine Mammals and Megafauna in Irish waters project, the IWDG Ferry Surveys Programme and the IWDG casual and effort-based sightings scheme between January 2005 and January 2011. A single marine mammal observer (or up to three observers, in the case of IWDG ferry surveys) conducted a visual survey effort from research vessels, naval service vessels and commercial ro-ro ferries between 2005 and 2011. Survey effort was conducted either from the ship’s bridge, the monkey island (the roof of the bridge) or from the crow’s nest (R.V. Celtic Explorer). Using an angle board and distances were estimated with the aid of a range-finding stick (Heinemann 1981). Environment data were recorded every 15 / 20 minutes using Logger 2000 software (IFAW 2000). Sightings were also recorded using Logger 2000. Automated position data were obtained through a laptop computer linked to a USB GPS receiver. Survey effort was conducted up to Beaufort sea-state six and in moderate to good visibility. As these were surveys onboard vessels of opportunity, the surveys were conducted in passing mode and cetaceans sighted were not approached. Sightings were identified to species level where possible, with species identifications being graded as definite, probable or possible. Where species identification could not be confirmed, sightings were downgraded (e.g. unidentified dolphin / unidentified whale / unidentified beaked whale etc.) according to criteria established for the IWDG’s cetacean sightings database (IWDG 2013). Observer effort focused on a 90-degree arc ahead of the ship; however, sightings located up to 90 degrees to port and starboard were included. Surveyors scanned the area by eye and using binoculars (typically 10X40 or 8X50). Bearings to sightings were measured.
Changes
Metadata
Content
Biotic composition
mammals
Data origin
Materials and Methods
Sampling device
Observation
Sampling frequency
Matrix
Measurements
Parameter group
Parameter
- presence/absence
- count
Temporal scope
First date
2013-01-01
Last date
2021-02-24
Geographic scope
Sea area(s)
North Atlantic Ocean (MRGID1912)
Coordinate reference
Location
Irish coastal and marine waters
Additional information
Label
Link file
| Grey Seal Distribution Polygons [dasid=7870] show more |
File properties
| Filename | GreySealDistributionPolygons.zip |
|---|---|
| Direct link | https://mda.vliz.be/directlink.php?fid=VLIZ_00000804_613762c25e03b056242317 |
| Datatype | Biotic data |
| MIMEtype | application/x-zip-compressed |
| Authors | Deirdre ODriscoll |
| Dataprovider | Deirdre ODriscoll |
| Email Dataprovider | deirdre.odriscoll@marine.ie |
| Conditions of use | |
| Creationdate | |
| Submitter | Beja Joana |
| Submit date | 2021-09-07 13:01:54 |
| Archived by | Beja Joana |
| Archive date | 2021-09-07 13:56:45 |
| Path | EMODnet - Public/Data products/ |
| Start year | 2013 |
| End year | 2021 |
| Summary | These grid data were derived from National Parks and Wildlife Service cetacean surveys within the Irish MSFD area and the EEA-10km GRID. The grid shows the current distribution of Grey seal (Halichoreus grypus) in Irish coastal and marine waters. |
| Description | The data were collected for the purposes of 2019 reporting under Article 17 of the EU Habitats Directive. Polygon shapefile showing the 10km grid cell-based current distribution of the Annex II seal species. The following data sources were used to determine their distribution: Morris, C. D. and Duck C. D. (2019) Aerial thermal imaging survey of seals in Ireland, 2017-2018. Report (unpublished) for the National Parks and Wildlife Service of the Department of Culture, Heritage and the Gaeltacht. NPWS (2018) Unpublished data collected during local site surveillance and regional monitoring of Ireland's seal populations along the east-southeast, west-southeast and northwest coasts between 2009 and 2018. Supporting Data: Data collected during the IWDG ISCOPE I and II projects, the IWDG/GMIT Marine Mammals and Megafauna in Irish waters project, the IWDG Ferry Surveys Programme and the IWDG casual and effort-based sightings scheme between January 2005 and January 2011. A single marine mammal observer (or up to three observers, in the case of IWDG ferry surveys) conducted a visual survey effort from research vessels, naval service vessels and commercial ro-ro ferries between 2005 and 2011. Survey effort was conducted either from the ship’s bridge, the monkey island (the roof of the bridge) or from the crow’s nest (R.V. Celtic Explorer). Using an angle board and distances were estimated with the aid of a range-finding stick (Heinemann 1981). Environment data were recorded every 15 / 20 minutes using Logger 2000 software (IFAW 2000). Sightings were also recorded using Logger 2000. Automated position data were obtained through a laptop computer linked to a USB GPS receiver. Survey effort was conducted up to Beaufort sea-state six and in moderate to good visibility. As these were surveys onboard vessels of opportunity, the surveys were conducted in passing mode and cetaceans sighted were not approached. Sightings were identified to species level where possible, with species identifications being graded as definite, probable or possible. Where species identification could not be confirmed, sightings were downgraded (e.g. unidentified dolphin / unidentified whale / unidentified beaked whale etc.) according to criteria established for the IWDG’s cetacean sightings database (IWDG 2013). Observer effort focused on a 90-degree arc ahead of the ship; however, sightings located up to 90 degrees to port and starboard were included. Surveyors scanned the area by eye and using binoculars (typically 10X40 or 8X50). Bearings to sightings were measured. |
| Changes |
Metadata
| Content | |
| Biotic composition | mammals |
|---|---|
| Data origin | |
| Materials and Methods | |
| Sampling device | Observation |
| Sampling frequency | |
| Matrix | |
| Measurements | |
| Parameter group | |
| Parameter |
|
| Temporal scope | |
| First date | 2013-01-01 |
| Last date | 2021-02-24 |
| Geographic scope | |
| Sea area(s) | North Atlantic Ocean (MRGID1912) |
| Coordinate reference | |
| Location | Irish coastal and marine waters |
| Additional information | |
| Label | |
| Link file |