ab9fe1cd-eb34-4918-9180-492de9c222dd National Parks and Wildlife Service Department of Housing, Local Government and Heritage Ecological Data Manager +353-1-8882000 n/a National Parks and Wildlife Service 90 North King Street Dublin 7 D07 N7CV Ireland datadelivery@housing.gov.ie 2023-12-06T15:27:37 ISDI Metadata Profile 1.2 EPSG Geodetic Parameter Dataset EPSG 2009-11-25 4326 https://www.opengis.net/def/crs/EPSG/0/4326 Harbour porpoise surveys in Rockabill to Dalkey Island SAC, 2021 2021 Harbour Porpoise Rockabill to Dalkey Is SAC 2022-12-01 Harbour porpoise surveys in Rockabill to Dalkey Island SAC, 2021 https://data.gov.ie/dataset/ In order to contribute to the Department Housing, Local Government & Heritage (DHLGH) site management and surveillance, visual monitoring of harbour porpoises was carried out in Rockabill to Dalkey Island SAC during the summer of 2021. This was the third dedicated line transect survey of harbour porpoises within this SAC which enabled ongoing trends in summer density estimates to be explored. The objectives of the survey in 2021 were to: i) derive updated summer density and population estimates for harbour porpoises within the Rockabill to Dalkey Island SAC using robust sampling methods for small cetacean density/population estimation; ii) estimate associated Coefficients of Variation and 95% Confidence Intervals The purpose of this project was to derive updated summer density and population estimates for harbour porpoises within the Rockabill to Dalkey Island SAC using robust sampling methods for small cetacean density/population estimation; National Parks and Wildlife Service Department of Housing, Local Government and Heritage Ecological Data Manager +353-1-8882000 n/a National Parks and Wildlife Service 90 North King Street Dublin 7 D07 N7CV Ireland datadelivery@housing.gov.ie Species distribution GEMET - INSPIRE themes, version 1.0 GEMET 2008-12-05 biota, biodiversity, marine fauna, cetacean GEMET - Concepts, version 4.2.3 2021-12-06 National Parks and Wildlife Service, NPWS, marine, mammal, biodiversity National Parks and Wildlife Service NPWS 2012-07-20 Ireland ISO 3166 ISO Country List 2008-12-13 http://creativecommons.org/licenses/by/4.0/ http://creativecommons.org/licenses/by/4.0/ Copyright Government of Ireland. This dataset was created by National Parks and Wildlife Service, Department of Housing, Local Government and Heritage. This copyright material is licensed for re-use under the Creative Commons Attribution 4.0 International licence. http://creativecommons.org/licenses/by/4.0/ 50000 environment -10.650444030762 -5.289115905762 50.807923689449 55.993470564449 2021-06-01 2021-11-15 0 1014 An Ordnance Datum or OD is a vertical datum used by an ordnance survey as the basis for deriving altitudes on maps. A spot height may be expressed as AOD for "above ordnance datum". Usually mean sea level (MSL) is used for the datum. Malin Ordnance Datum Derivation of vertical height or depth (in metres) In the Republic of Ireland, OD for the Ordnance Survey of Ireland is Malin Ordnance Datum: the Mean Sea Level (MSL) at Portmoor Pier, Malin Head, County Donegal, between 1960 and 1969. 5731 EPSG Projection 5731 - Malin Head height Metres Derivation of Altitude OD based on Mean Sea Level, Malin Head 1960-1969 Esri shapefile v10+ National Parks and Wildlife Service Department of Housing, Local Government and Heritage Ecological Data Manager +353-1-8882000 n/a National Parks and Wildlife Service 90 North King Street Dublin 7 D07 N7CV Ireland datadelivery@housing.gov.ie.ie https://www.npws.ie/sites/default/files/general/HPRD21.zip zip Dataset Harbour porpoise surveys in Rockabill to Dalkey Island SAC, 2021 dataset published on NPWS website INSPIRE Data Specification on Provide Spatial Data Theme keyword INSPIRE Data Specifications v3.0 2011-06-15 The INSPIRE Directive or INSPIRE lays down a general framework for a Spatial Data Infrastructure (SDI) for the purposes of European Community environmental policies and policies or activities which may have an impact on the environment. false 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 INSPIRE Interoperability Regulation 2010-12-08 Level of conformance with the 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 false The route of the survey vessel were stored on Garmin handheld GPS. Map files from each survey were downloaded using Garmin MapSource® software and saved as a text file. These data were then used to create ArcView (Version 9) shape files of the survey effort points, tracks, and location of all sightings recorded during each survey. Maps of the study area and associated survey data were created in Irish Grid (TM65_Irish Grid) with ArcMap 10.2 while maps of the prescribed survey area, survey track-lines and coordinates were obtained from DHLGH. Data concerning transects, effort, sightings, abundance and density were stored in a single MS Access database, which was queried and processed via GIS to produce sighting distribution maps.