ERDDAP > info > ices_DATRAS_IE_IGFS

Grid DAP Data	Sub- set	Table DAP Data	Make A Graph	W M S	Source Data Files	Title	Sum- mary	FGDC, ISO, Metadata	Back- ground Info	RSS	E mail	Institution	Dataset ID
	set	data	graph		files	Irish Ground Fish Survey for commercial fish species		F   I   M	background			MI, ICES	ices_DATRAS_IE_IGFS

The Dataset's Variables and Attributes

Row Type	Variable Name	Attribute Name	Data Type	Value
attribute	NC_GLOBAL	AccConstrDescription	String	This license lets others distribute, remix, tweak, and build upon your work, even commercially, as long as they credit you for the original creation. This is the most accommodating of licenses offered. Recommended for maximum dissemination and use of licensed materials.
attribute	NC_GLOBAL	AccConstrDisplay	String	This dataset is licensed under a Creative Commons Attribution 4.0 International License.
attribute	NC_GLOBAL	AccConstrEN	String	Attribution (CC BY)
attribute	NC_GLOBAL	AccessConstraint	String	Attribution (CC BY)
attribute	NC_GLOBAL	AccessConstraints	String	ICES Data Policy: https://www.ices.dk/data/guidelines-and-policy/Pages/ICES-data-policy.aspx
attribute	NC_GLOBAL	Acronym	String	IE-IGFS
attribute	NC_GLOBAL	BrackishFlag	String	0
attribute	NC_GLOBAL	CDate	String	2010-12-22
attribute	NC_GLOBAL	cdm_data_type	String	Other
attribute	NC_GLOBAL	CheckedFlag	String	0
attribute	NC_GLOBAL	Citation	String	Fish trawl survey: Irish Ground Fish Survey for commercial fish species. ICES Database of trawl surveys (DATRAS). The International Council for the Exploration of the Sea, Copenhagen. 2010. Online source: http://ecosystemdata.ices.dk..
attribute	NC_GLOBAL	Comments	String	None
attribute	NC_GLOBAL	ContactEmail	String	None
attribute	NC_GLOBAL	Conventions	String	COARDS, CF-1.6, ACDD-1.3
attribute	NC_GLOBAL	creator_name	String	Holdsworth
attribute	NC_GLOBAL	CurrencyDate	String	None
attribute	NC_GLOBAL	DasID	String	2762
attribute	NC_GLOBAL	DasOrigin	String	Monitoring: field survey
attribute	NC_GLOBAL	DasType	String	Data
attribute	NC_GLOBAL	DasTypeID	String	1
attribute	NC_GLOBAL	DescrCompFlag	String	0
attribute	NC_GLOBAL	DescrTransFlag	String	0
attribute	NC_GLOBAL	Easternmost_Easting	double	-3.459
attribute	NC_GLOBAL	EmbargoDate	String	None
attribute	NC_GLOBAL	EngAbstract	String	The dataset includes age- and length-based catch per unit effort data for commercial fish species collected during the Irish Ground Fish trawl survey.
attribute	NC_GLOBAL	EngDescr	String	Fisheries Science Services (FSS) carries out the annual Irish Groundfish Survey (IGFS) in the fourth quarter of each year as part of a larger coordinated survey effort with our EU neighbours (France to the south; and the UK to the north). A broad spectrum of data is collected during the survey, but the overriding objective is to provide information on commercially exploited fish stocks. In particular the survey provides an index of the proportion of juveniles in the stock, which in turn gives an indication of its spawning success. This is an important source of information not available from commercial landings due to the necessary minimum fish length restrictions on commercial catches. In addition, the survey provides data on species and environmental parameters in areas of both high and low commercial activity. This gives a better context to data for the entire survey area as opposed to focusing entirely on traditional fishing hot-spots that can remain stable while significant changes in surrounding background abundance and distribution go un-noticed. The primary goal of the groundfish survey is to develop estimates of juvenile abundance for important species. Measurements of the abundance of juvenile fish are a critical measure of the health of a stock, serving as an annual indication of recruitment (the number of newly spawned fish which enter the population each year) success or failure. Most importantly, they allow forecasting of future commercial abundance. Survey provides data on the distribution and biology of commercial and non-commercial species of ecological interest, as well as hydrographic and environmental observations. When these data are combined with annual recruitment indices they can help identify the possible causes driving year-class success or failure, and allow us to see long-term changes in populations that may have been caused by fishing, pollution, or climate change. This spatial dataset comprises the haul station location from the trawl survey. The Irish Groundfish Survey feeds into the International Bottom Trawl Survey [ie. IBTS] for international reporting. The Irish West Coast Groundfish Survey started in 1990 and for the first two years consisted of circa 25 stations concentrated around the Irish coast in ICES Areas Via South and VIIb. Adverse weather in 1992 limited station coverage to only 4 stations which effectively broke the time series. The survey was re-established in 1993 and has consisted of circa 70 stations, for Parts A and B combined, since then. Spatial coverage was extended west out to the 200m contour, but remains as Via South and VIIb. Due to the restrictions of the current and previous research vessel commercial trawlers have been contracted to carry out the survey work. Wherever possible continuity of vessel and gear has been maintained and standard IBTS methodology applied. However, due to reduced staffing on commercial vessels it has rarely been possible to completely sort the catch. Until 2000 all cod were sorted from the catch and then a sub-sample of two baskets was taken and completely sorted. From 2001 onwards, in response to an overall review of survey sampling undertaken during the IPROSTS Project (Anon 2001), the catch is completely sorted for all target species and a qualitative assessment made of the residual catch as a minimum. The Irish surveys use an ICES rectangle based sampling strategy. The sampling design attempts to allocate at least two stations per rectangle (where the sea area is appropriate). Stations are selected randomly within each rectangle from known clear tow positions. On the WCGS and ISCGS circa 70 fishing stations are planned on each survey every year. The number of hauls is adjusted according to the ship time available at sea. The Irish West Coast Groundfish Survey is carried out in two parts: Part A covers ICES Division Via (south) and VIIb (north); Part B covers ICES Division VIIb and VIIj. The survey is conducted from 15 to 300 m depths during the fourth quarter (October - November). The Irish West Coast Groundfish Survey is carried out on chartered commercial fishing vessels. Whilst the same vessel (MFV Marliona, 224 gross tonnage and 30 m LOA) has normally been used each year for Part A and Sionann for Part B, in 2001 Part B was conducted from the MFV Regina Ponti (34.5 m LOA). Both vessels use a Rockhopper net with 12 inch discs and 11 inch Thyboron doors. The nets are fitted with a 20 mm codend liner. Gear performance throughout the survey is monitored using Furuno Ch24 (Headline Monitor). The Irish Sea Celtic Ground Survey commenced in 1997 and evolved from an earlier Irish Sea Juvenile Fish Survey. As a consequence early survey stations concentrated largely, though not exclusively, around a number of shallow spawning areas along the Irish east coast in VIIa. These positions were expanded in combination with clear tows provided by the industry and CEFAS as well as some exploratory tows. Spatial coverage therefore extended into the western Irish Sea from 2001 into the area around the Isle of Man, Liverpool and Cardigan Bays and the Welsh coast. The survey is carried out on the Irish research vessel the R.V. Celtic Voyager. The sampling procedure on board conforms to the IBTS standard protocols and as such all cod are sampled and aged, the entire catch is sorted and then sub-sampled as and where appropriate. The Irish survey in the Irish Sea and Celtic Sea covers ICES Division VIIa and VIIg. The survey is conducted from 10 to 150 m depths during the fourth quarter (November-December) by the RV Celtic Voyager. This vessel is 32 m in length with gross tonnage of 340 t. The fishing gear used is a GOV 28.9/37.1 Trawl with Morgere Kite (0.85 by 0.85m). Mean vertical opening is 6 m and door spread 48 m. Morgere Polyvalent doors (Type AA4.5) are used and gear performance is monitored throughout the survey using the SCANMAR (RX400) net monitoring system (Headline height, Door spread). Trials on the new 65m research vessel, the R.V. Celtic Explorer, are due to commence in late 2002. Therefore, from 2003 onwards all Irish Surveys will be conducted on this new vessel, starting around mid October through to late November.
attribute	NC_GLOBAL	FreshFlag	String	0
attribute	NC_GLOBAL	geospatial_lat_max	double	56.5
attribute	NC_GLOBAL	geospatial_lat_min	double	50.12
attribute	NC_GLOBAL	geospatial_lat_units	String	degrees_north
attribute	NC_GLOBAL	geospatial_lon_max	double	-3.459
attribute	NC_GLOBAL	geospatial_lon_min	double	-14.555
attribute	NC_GLOBAL	geospatial_lon_units	String	degrees_east
attribute	NC_GLOBAL	infoUrl	String	None
attribute	NC_GLOBAL	InputNotes	String	None
attribute	NC_GLOBAL	institution	String	MI, ICES
attribute	NC_GLOBAL	keywords	String	aphia_id, BasisOfRecord, DayCollected, InstitutionCode, latitude, longitude, MaximumDepth, MonthCollected, Notes, ObservedIndividualCount, ScientificName, sex, time, TimeOfDay, YearCollected
attribute	NC_GLOBAL	License	String	https://creativecommons.org/licenses/by/4.0/
attribute	NC_GLOBAL	license	String	The data may be used and redistributed for free but is not intended for legal use, since it may contain inaccuracies. Neither the data Contributor, ERD, NOAA, nor the United States Government, nor any of their employees or contractors, makes any warranty, express or implied, including warranties of merchantability and fitness for a particular purpose, or assumes any legal liability for the accuracy, completeness, or usefulness, of this information.
attribute	NC_GLOBAL	Lineage	String	None
attribute	NC_GLOBAL	MarineFlag	String	1
attribute	NC_GLOBAL	Northernmost_Northing	double	56.5
attribute	NC_GLOBAL	OrigAbstract	String	None
attribute	NC_GLOBAL	OrigDescr	String	None
attribute	NC_GLOBAL	OrigDescrLang	String	English
attribute	NC_GLOBAL	OrigDescrLangNL	String	Engels
attribute	NC_GLOBAL	OrigLangCode	String	en
attribute	NC_GLOBAL	OrigTitle	String	None
attribute	NC_GLOBAL	OrigTitleLang	String	None
attribute	NC_GLOBAL	OrigTitleLangCode	String	None
attribute	NC_GLOBAL	OrigTitleLangNL	String	None
attribute	NC_GLOBAL	Progress	String	Completed
attribute	NC_GLOBAL	PublicFlag	String	1
attribute	NC_GLOBAL	ReleaseDate	String	None
attribute	NC_GLOBAL	ReleaseDate0	String	None
attribute	NC_GLOBAL	RevisionDate	String	None
attribute	NC_GLOBAL	SizeReference	String	More than 170,153 records
attribute	NC_GLOBAL	sourceUrl	String	(local files)
attribute	NC_GLOBAL	Southernmost_Northing	double	50.12
attribute	NC_GLOBAL	standard_name_vocabulary	String	CF Standard Name Table v70
attribute	NC_GLOBAL	StandardTitle	String	Irish Ground Fish Survey for commercial fish species
attribute	NC_GLOBAL	subsetVariables	String	ScientificName,BasisOfRecord,YearCollected,MonthCollected,DayCollected,sex,aphia_id
attribute	NC_GLOBAL	summary	String	The dataset includes age- and length-based catch per unit effort data for commercial fish species collected during the Irish Ground Fish trawl survey.
attribute	NC_GLOBAL	TerrestrialFlag	String	0
attribute	NC_GLOBAL	time_coverage_end	String	2008-11-28T11:33:00Z
attribute	NC_GLOBAL	time_coverage_start	String	2003-10-22T09:16:00Z
attribute	NC_GLOBAL	title	String	Irish Ground Fish Survey for commercial fish species
attribute	NC_GLOBAL	UDate	String	2022-08-09
attribute	NC_GLOBAL	VersionDate	String	None
attribute	NC_GLOBAL	VersionDay	String	None
attribute	NC_GLOBAL	VersionMonth	String	None
attribute	NC_GLOBAL	VersionName	String	None
attribute	NC_GLOBAL	VersionYear	String	None
attribute	NC_GLOBAL	VlizCoreFlag	String	1
attribute	NC_GLOBAL	Westernmost_Easting	double	-14.555
variable	ScientificName		String
attribute	ScientificName	long_name	String	ScientificName
attribute	ScientificName	units	String	https://vocab.nerc.ac.uk/collection/P01/current/SCNAME01/
attribute	ScientificName	units_uri	String	https://vocab.nerc.ac.uk/collection/P01/current/SCNAME01/
variable	BasisOfRecord		String
attribute	BasisOfRecord	long_name	String	BasisOfRecord
attribute	BasisOfRecord	units	String	None
attribute	BasisOfRecord	units_uri	String	None
variable	InstitutionCode		String
attribute	InstitutionCode	long_name	String	InstitutionCode
attribute	InstitutionCode	units	String	None
attribute	InstitutionCode	units_uri	String	None
variable	YearCollected		float
attribute	YearCollected	actual_range	float	2003.0, 2008.0
attribute	YearCollected	long_name	String	YearCollected
attribute	YearCollected	units	String	None
attribute	YearCollected	units_uri	String	None
variable	MonthCollected		float
attribute	MonthCollected	actual_range	float	9.0, 12.0
attribute	MonthCollected	long_name	String	MonthCollected
attribute	MonthCollected	units	String	None
attribute	MonthCollected	units_uri	String	None
variable	DayCollected		float
attribute	DayCollected	actual_range	float	1.0, 31.0
attribute	DayCollected	long_name	String	DayCollected
attribute	DayCollected	units	String	None
attribute	DayCollected	units_uri	String	None
variable	time		double
attribute	time	_CoordinateAxisType	String	Time
attribute	time	actual_range	double	1.06681416E9, 1.22787198E9
attribute	time	axis	String	T
attribute	time	ioos_category	String	Time
attribute	time	long_name	String	Time
attribute	time	standard_name	String	time
attribute	time	time_origin	String	01-JAN-1970 00:00:00
attribute	time	time_precision	String	1970-01-01T00:00:00Z
attribute	time	units	String	seconds since 1970-01-01T00:00:00Z
attribute	time	units_uri	String	None
variable	TimeOfDay		float
attribute	TimeOfDay	actual_range	float	6.133, 20.02
attribute	TimeOfDay	long_name	String	TimeOfDay
attribute	TimeOfDay	units	String	None
attribute	TimeOfDay	units_uri	String	None
variable	MaximumDepth		float
attribute	MaximumDepth	actual_range	float	-9.0, 750.0
attribute	MaximumDepth	long_name	String	MaximumDepth
attribute	MaximumDepth	units	String	None
attribute	MaximumDepth	units_uri	String	None
variable	sex		String
attribute	sex	long_name	String	sex
attribute	sex	units	String	None
attribute	sex	units_uri	String	None
variable	ObservedIndividualCount		float
attribute	ObservedIndividualCount	actual_range	float	-9.0, 61540.0
attribute	ObservedIndividualCount	long_name	String	ObservedIndividualCount
attribute	ObservedIndividualCount	units	String	http://rs.tdwg.org/dwc/terms/individualCount
attribute	ObservedIndividualCount	units_uri	String	http://rs.tdwg.org/dwc/terms/individualCount
variable	Notes		String
attribute	Notes	long_name	String	Notes
attribute	Notes	units	String	None
attribute	Notes	units_uri	String	None
variable	longitude		float
attribute	longitude	_CoordinateAxisType	String	Lon
attribute	longitude	actual_range	float	-14.555, -3.459
attribute	longitude	axis	String	X
attribute	longitude	ioos_category	String	Location
attribute	longitude	long_name	String	Longitude
attribute	longitude	standard_name	String	longitude
attribute	longitude	units	String	degrees_east
attribute	longitude	units_uri	String	http://rs.tdwg.org/dwc/terms/decimalLongitude
variable	latitude		float
attribute	latitude	_CoordinateAxisType	String	Lat
attribute	latitude	actual_range	float	50.12, 56.5
attribute	latitude	axis	String	Y
attribute	latitude	ioos_category	String	Location
attribute	latitude	long_name	String	Latitude
attribute	latitude	standard_name	String	latitude
attribute	latitude	units	String	degrees_north
attribute	latitude	units_uri	String	http://rs.tdwg.org/dwc/terms/decimalLatitude
variable	aphia_id		float
attribute	aphia_id	actual_range	float	11704.0, 11760.0
attribute	aphia_id	long_name	String	aphia_id
attribute	aphia_id	units	String	https://vocab.nerc.ac.uk/collection/P01/current/SNANID01/
attribute	aphia_id	units_uri	String	https://vocab.nerc.ac.uk/collection/P01/current/SNANID01/

The information in the table above is also available in other file formats (.csv, .htmlTable, .itx, .json, .jsonlCSV1, .jsonlCSV, .jsonlKVP, .mat, .nc, .nccsv, .tsv, .xhtml) via a RESTful web service.