e74634ac-9603-4bd5-b8d6-15b2ebe82425 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 2023-11-20T18:13:47 ISDI Metadata Profile 1.2 EPSG Geodetic Parameter Dataset EPSG 2009-11-25 4326 https://www.opengis.net/def/crs/EPSG/0/4326 Inshore boat-based cetacean Survey 2011 Inshore boat-based surveys for cetaceans 2011 2022-07-08 Inshore boat-based cetacean Survey 2011 https://data.gov.ie/dataset/ Concurrent visual and acoustic surveys for cetaceans were carried out in two survey blocks in the Irish Sea to investigate species distribution, relative abundance and absolute abundance where possible. Single platform line-transect surveys were carried out in the northern Irish Sea in July and in the southern Irish Sea in August 2011. During the two surveys, we carried out 348km of survey effort along 23 track-lines of which 100% of the northern Irish Sea survey and 79% of the southern Irish Sea survey were in sea-state ≤3. We recorded a total of 71 cetacean sightings comprising 111 individuals of two species. In addition there were five seal sightings of two species and a single sighting of a basking shark. Harbour porpoise was by far the most abundant species followed by minke whale. Grey seal was the most frequent seal species with only a single sighting of a common seal. To investigate cetacean species distribution, relative and absolute abundance in the Irish sea. 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 2011-07-01 2011-12-01 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/NPWS%20Inshore%20Cetacean%20Surveys%202011.zip zip Dataset Inshore boat-based cetacean Survey 2011 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 During each transect the position of the survey vessel was tracked continuously through a GPS receiver fed directly into a laptop while survey effort, including environmental conditions (sea-state, wind strength and direction, glare etc.) were recorded directly onto LOGGER software (IFAW) every 15 minutes. When a sighting was made the position of the vessel was recorded immediately in LOGGER and the angle of the sighting from the track of the vessel and the radial distance of the sighting from the vessel recorded. The angle was recorded to the nearest degree via an angle board attached to the vessel immediately in front of each observer. These data were communicated to the recorder in the wheelhouse via two-way radio. Accurate distance estimation is essential for distance sampling. Distance sticks were made for observers using the Heinemann Equation (Heinemann, 1981) which were used to aid distance estimation.