Data Catalogue
VERSION SUPERSEDED - Nephrops Underwater TV Survey FU22 The "Smalls"
# SUPERSEDED - The dataset was originally published with a doi in February 2020 but has been superseded by an updated version. This DOI has been superseded in May 2021 by https://doi.org/ 10/gc9t due to corrections applied to the dataset. Nephrops norvegicus are common around the Irish coast, occurring in geographically distinct sandy or muddy areas where the sediment is suitable for construction of their burrow dwellings. The Marine Institute carries out Underwater TV surveys annually of commercially important Nephrops stocks. This dataset provides quality assured estimates of Nephrops burrow densities over the known spatial and bathymetric distribution of the FU (functional unit) 22: the “Smalls” Nephrops ground. From 2006 to 2011 (UWTV) stations set at 3.0 nautical mile spacing over the known distribution. From 2012 onwards a randomised isometric grid of underwater television (UWTV) stations set at 4.5 nautical mile spacing. Underwater TV Survey reports for this Nephrops stock are available at: http://hdl.handle.net/10793/1428 Also available is the ICES Cooperative Research Reports which details use of UWTV surveys to assess Nephrops stock:https://tinyurl.com/ices-nephrops GIS shapefiles of FU22 and the “Smalls” Nephrops grounds are provided. This dataset covers the period of 2006 and is ongoing. One hundred percent of the survey grid was covered in all years except in 2015, where 83 percent of the grid was covered. These 7 stations in 2015 could not be completed due to very poor or nil visibility conditions encountered at seabed. For these stations density estimates were filled-in using and average of historic values within 2nmi (buffer2estimated). Dataset fields are Nephrops Functional Unit Number; Survey Code; Year; UWTV station number; Date-Start of UWTV track; Time_Start of UWTV track; Date-End of UWTV track; Time_End of UWTV track; Decimalised longitude and latitude midpoint of the UWTV station track; Adjusted density (Nephrops burrows/m²) ;Length in metres of the UWTV station track; Field of View of camera system in metres; Total Nephrops burrow count; Nephrops Fishing Ground Name; Source of positional data to calculate UWTV station track (USBL sled GPS, SHIP GPS, Layback, estimated GPS, buffer2estimated); Camera system used (SD = standard analogue system, HD = high definition system); Data Extraction method (SQL, MSAccess); Data Status (Final for analysis); Research Vessel Name; Correction Factor (Density / Correction Factor = Adjusted Density) and Depth (metres). Entries with NA means data is not available. None
Suggested Citation: Doyle, Jennifer. (2020) VERSION SUPERSEDED - Nephrops Underwater TV Survey FU22 The "Smalls". Marine Institute, Ireland. doi:10/dk22.
Simple
- Date (Publication)
- 2020-01-31
- Date (Revision)
- 2023-06-01
- Date (Creation)
- 2020-01-31
- Citation identifier
- ie.marine.data:dataset.4012
- Citation identifier
- 10/dk22
- Other citation details
-
Doyle, Jennifer. (2020) VERSION SUPERSEDED - Nephrops Underwater TV Survey FU22 The "Smalls". Marine Institute, Ireland. doi:10/dk22.
- Point of contact
-
Organisation name Individual name Electronic mail address Role Marine Institute
Originator
- Maintenance and update frequency
- As needed
- Use limitation
-
While every effort is made in preparing the dataset no responsibility is accepted by or on behalf of the Marine Institute for any errors, omissions or misleading information. The Marine Institute accepts no responsibility for loss or damage occasioned or claimed to have been occasioned, in part or in full, as a consequence of any person acting, or refraining from acting as a result of a matter contained in this datasets or as a consequence of using this dataset for any purpose whatsoever.
- Use limitation
-
Standard License Agreement for use of Marine Institute Digital Data that has been requested through the Marine Institute Data Request Service and is not available as open access via a Marine Institute data service.
- Access constraints
- Marine%20Institute%20License
- Spatial representation type
- None
- Language
- English
- Begin date
- 2006-06-27
- End date
- ..
- Reference system identifier
- INSPIRE RS registry / http://www.opengis.net/def/crs/EPSG/0/None
- Distribution format
-
Name Version CSV
- OnLine resource
-
Protocol Linkage Name WWW:DOWNLOAD-1.0-http--download
https://data.marine.ie/data/53bd963b-745b-42ae-a553-193db109769d.zip CSV
- OnLine resource
-
Protocol Linkage Name WWW:LINK-1.0-http--link
http://www.marine.ie
- OnLine resource
-
Protocol Linkage Name WWW:LINK-1.0-http--link
https://www.dcmap-ireland.ie/
- Hierarchy level
- Dataset
Conformance result
- Date (Publication)
- 2010-12-08
- Explanation
-
See the referenced specification
- Pass
- Yes
- Statement
-
Data supplied by Marine Institute.
Metadata
- File identifier
- ie.marine.data:dataset.4012 XML
- Metadata language
- English
- Hierarchy level
- Dataset
- Date stamp
- 2023-06-01
- Metadata standard name
-
ISDI Metadata Profile
- Metadata standard version
-
1.2
- Metadata author
-
Organisation name Individual name Electronic mail address Role Marine Institute
Point of contact
- Dataset URI
-
10.20393/53bd963b-745b-42ae-a553-193db109769d
