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EUROBIS data served via ERDDAP
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| Dataset Title: | ICES North Sea International Bottom Trawl Survey for commercial fish species
|
| Institution: | ICES (Dataset ID: ices_DATRAS_NS_IBTS) |
| Range: | longitude = -3.967 to 12.875°E, latitude = 49.88 to 61.88°N, time = 1965-03-30T07:00:00Z to 2011-08-02T15:57:00Z |
| Information: | Summary
| License
| FGDC
| ISO 19115
| Metadata
| Background
| Subset
| Data Access Form
| Files
|
|
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Zoom:
![[The graph you specified. Please be patient.]](https://erddap.eurobis.org/erddap/tabledap/ices_DATRAS_NS_IBTS.png?longitude,latitude,YearCollected&time%3E=2011-07-27T00%3A00%3A00Z&time%3C=2011-08-03T00%3A00%3A00Z&.draw=markers&.marker=5%7C5&.color=0x000000&.colorBar=%7C%7C%7C%7C%7C&.bgColor=0xffccccff)
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Attributes {
s {
ScientificName {
String long_name "ScientificName";
String units "https://vocab.nerc.ac.uk/collection/P01/current/SCNAME01/";
String units_uri "https://vocab.nerc.ac.uk/collection/P01/current/SCNAME01/";
}
BasisOfRecord {
String long_name "BasisOfRecord";
String units "None";
String units_uri "None";
}
InstitutionCode {
String long_name "InstitutionCode";
String units "None";
String units_uri "None";
}
YearCollected {
Float32 actual_range 1965.0, 2011.0;
String long_name "YearCollected";
String units "None";
String units_uri "None";
}
MonthCollected {
Float32 actual_range 1.0, 12.0;
String long_name "MonthCollected";
String units "None";
String units_uri "None";
}
DayCollected {
Float32 actual_range 1.0, 31.0;
String long_name "DayCollected";
String units "None";
String units_uri "None";
}
time {
String _CoordinateAxisType "Time";
Float64 actual_range -1.50138e+8, 1.31230062e+9;
String axis "T";
String ioos_category "Time";
String long_name "Time";
String standard_name "time";
String time_origin "01-JAN-1970 00:00:00";
String time_precision "1970-01-01T00:00:00Z";
String units "seconds since 1970-01-01T00:00:00Z";
String units_uri "None";
}
TimeOfDay {
Float32 actual_range 0.0, 23.98;
String long_name "TimeOfDay";
String units "None";
String units_uri "None";
}
MaximumDepth {
Float32 actual_range -9.0, 301.0;
String long_name "MaximumDepth";
String units "None";
String units_uri "None";
}
sex {
String long_name "sex";
String units "None";
String units_uri "None";
}
ObservedIndividualCount {
Float32 actual_range -9.0, 65400.0;
String long_name "ObservedIndividualCount";
String units "http://rs.tdwg.org/dwc/terms/individualCount";
String units_uri "http://rs.tdwg.org/dwc/terms/individualCount";
}
Notes {
String long_name "Notes";
String units "None";
String units_uri "None";
}
longitude {
String _CoordinateAxisType "Lon";
Float32 actual_range -3.967, 12.875;
String axis "X";
String ioos_category "Location";
String long_name "Longitude";
String standard_name "longitude";
String units "degrees_east";
String units_uri "http://rs.tdwg.org/dwc/terms/decimalLongitude";
}
latitude {
String _CoordinateAxisType "Lat";
Float32 actual_range 49.88, 61.88;
String axis "Y";
String ioos_category "Location";
String long_name "Latitude";
String standard_name "latitude";
String units "degrees_north";
String units_uri "http://rs.tdwg.org/dwc/terms/decimalLatitude";
}
aphia_id {
Float32 actual_range 10330.0, 11784.0;
String long_name "aphia_id";
String units "https://vocab.nerc.ac.uk/collection/P01/current/SNANID01/";
String units_uri "https://vocab.nerc.ac.uk/collection/P01/current/SNANID01/";
}
}
NC_GLOBAL {
String AccConstrDescription "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.";
String AccConstrDisplay "This dataset is licensed under a Creative Commons Attribution 4.0 International License.";
String AccConstrEN "Attribution (CC BY)";
String AccessConstraint "Attribution (CC BY)";
String AccessConstraints "ICES Data Policy: https://www.ices.dk/data/guidelines-and-policy/Pages/ICES-data-policy.aspx";
String Acronym "NS-IBTS";
String BrackishFlag "0";
String CDate "2010-12-22";
String cdm_data_type "Other";
String CheckedFlag "0";
String Citation "Fish trawl survey: ICES North Sea International Bottom Trawl 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.";
String Comments "None";
String ContactEmail "None";
String Conventions "COARDS, CF-1.6, ACDD-1.3";
String creator_name "Holdsworth";
String CurrencyDate "None";
String DasID "2763";
String DasOrigin "Monitoring: field survey";
String DasType "Data";
String DasTypeID "1";
String DescrCompFlag "0";
String DescrTransFlag "0";
Float64 Easternmost_Easting 12.875;
String EmbargoDate "None";
String EngAbstract "The dataset includes age- and length-based catch per unit effort data for commercial fish species in ICES roundfish areas.";
String EngDescr
"In the North Sea the IBTS started in the 1960's as a survey that was directed at juvenile herring and was at that time called the International Young Herring Survey (IYHS).
As it was gradually realised that the survey also yielded valuable information for other fish species, such as cod and haddock, the objectives were broadened and the survey was renamed into the International Young Fish Survey (IYFS). Besides the IYFS, which was carried out in the first quarter, a number of national surveys developed in the 1970's and 1980's that were mainly carried out in the third quarter.
In 1990 ICES decided to combine the international and the national surveys into the IBTS. The IBTS is carried out twice per year (1st and 3rd Quarters) since 1997 and on a quarterly basis in the period 1991-1996.
Prior to 1977 there was no standardisation of gear although all ships used bottom trawls with a small mesh cover. In 1977 ICES recommended that all ships should use a GOV trawl as specified by the Institut des Peches Maritimes, Boulogne. A detailed description of the net is to be found in the manual (Anon. 2004). The GOV trawl has been gradually phased in, e.g. in 1979 only 3 vessels were equipped with the GOV trawl, but by 1983 all 8 nations were using this gear. It should be noted that although the gear is now standard, variations in the rigging exist between the various countries.
The fishing method is also standardized and described in the manual (Anon. 2004). Fishing speed is 4 knots measured as trawl speed over the ground. In 1977 ICES also recommended that the duration of a tow should be reduced from an hour to half an hour with the catch data to be expressed in numbers per hour. All nations accepted this recommendation although it was a number of years before 30 minutes became the standard.";
String FreshFlag "0";
Float64 geospatial_lat_max 61.88;
Float64 geospatial_lat_min 49.88;
String geospatial_lat_units "degrees_north";
Float64 geospatial_lon_max 12.875;
Float64 geospatial_lon_min -3.967;
String geospatial_lon_units "degrees_east";
String history
"2025-03-09T23:03:56Z (local files)
2025-03-09T23:03:56Z http://erddap.eurobis.org/tabledap/ices_DATRAS_NS_IBTS.das";
String infoUrl "None";
String InputNotes "None";
String institution "ICES";
String keywords "aphia_id, BasisOfRecord, DayCollected, InstitutionCode, latitude, longitude, MaximumDepth, MonthCollected, Notes, ObservedIndividualCount, ScientificName, sex, time, TimeOfDay, YearCollected";
String License "https://creativecommons.org/licenses/by/4.0/";
String license
"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.";
String Lineage "None";
String MarineFlag "1";
Float64 Northernmost_Northing 61.88;
String OrigAbstract "None";
String OrigDescr "None";
String OrigDescrLang "English";
String OrigDescrLangNL "Engels";
String OrigLangCode "en";
String OrigTitle "None";
String OrigTitleLang "None";
String OrigTitleLangCode "None";
String OrigTitleLangNL "None";
String Progress "In Progress";
String PublicFlag "1";
String ReleaseDate "None";
String ReleaseDate0 "None";
String RevisionDate "None";
String SizeReference "More than 2,888,962 records";
String sourceUrl "(local files)";
Float64 Southernmost_Northing 49.88;
String standard_name_vocabulary "CF Standard Name Table v70";
String StandardTitle "ICES North Sea International Bottom Trawl Survey for commercial fish species";
String subsetVariables "ScientificName,BasisOfRecord,YearCollected,MonthCollected,DayCollected,sex,aphia_id";
String summary "The dataset includes age- and length-based catch per unit effort data for commercial fish species in ICES roundfish areas.";
String TerrestrialFlag "0";
String time_coverage_end "2011-08-02T15:57:00Z";
String time_coverage_start "1965-03-30T07:00:00Z";
String title "ICES North Sea International Bottom Trawl Survey for commercial fish species";
String UDate "2022-08-16";
String VersionDate "None";
String VersionDay "None";
String VersionMonth "None";
String VersionName "None";
String VersionYear "None";
String VlizCoreFlag "1";
Float64 Westernmost_Easting -3.967;
}
}
Data Access Protocol (DAP) and its
selection constraints.
The URL specifies what you want: the dataset, a description of the graph or the subset of the data, and the file type for the response.
Tabledap request URLs must be in the form
https://coastwatch.pfeg.noaa.gov/erddap/tabledap/datasetID.fileType{?query}
For example,
https://coastwatch.pfeg.noaa.gov/erddap/tabledap/pmelTaoDySst.htmlTable?longitude,latitude,time,station,wmo_platform_code,T_25&time>=2015-05-23T12:00:00Z&time<=2015-05-31T12:00:00Z
Thus, the query is often a comma-separated list of desired variable names,
followed by a collection of
constraints (e.g., variable<value),
each preceded by '&' (which is interpreted as "AND").
For details, see the tabledap Documentation.