Acknowledgements
Anne Sell, Thünen Institute of Sea Fisheries
Barbara Bland, Swedish University of Agricultural Sciences
Finlay Burns, Marine Scotland Science
Franck Coppin, Ifremer
Ingeborg de Boois, Wageningen Marine Research
Jenifer Devine, Institute of Marine Research, Norway
Jens Rasmussen, Marine Scotland Science
Kai Ulrich Wieland, DTU Aqua
Michele Salaun, Ifremer
Morgane Travers, Ifremer
Ralf van Hal, Wageningen Marine Research
Trine Haugen, Institute of Marine Research, Norway
Vaishav Soni, ICES Data Centre
Yves Vérin, Ifremer
International Council for Exploration of the Seas (ICES)
ICES Export Groups: IBTSWG, WGBEAM, WGMSFDemo
Haul ID - Composed unique identifier with naming structure: survey series/vessel/year/haul number
Survey Acronym: Acronym to describe this survey dataset - used both in sampling info and biological data
Ship: Four letter code corresponding to the ICES Ship code from vocabulary TS_Ship on http://vocab.ices.dk
Gear Type: Broad term classifying/filtering Gear types.
Gear: Explicit gear used for fishing. Alphanumeric code corresponding to entries in ICES Gear Voabulary on http://vocab.ices.dk
YearShot: The year in which gear was deployed
MonthShot: The month in which the gear was deployed
DayShot: Day day on which the gear was shot (day of the month)
Hauldur_min: The duration of fishing in minutes
ShootLat_degdec: Latitiude of the shooting position of gear expressed as decimal degrees (WGS84)
ShootLong_degdec: Longitude of the shotting position of gear expressed as decimal degrees (WGS84). Western longitude is negative.
ICESStSq: ICES Statistical rectangle in which the haul took place
SurveyStratum: Depending on the specific survey, the stratum is eitehr the ICES statsitical rectangle, or reference to an entry in the ICES vocabuylary TS_Depthstratum on http://vocab.ices.dk
Depth_m: Depth at shot position (in meters)
Distance_km: Towed distance (km)
WingSpread_m: Mean distance between the wings during fishing operation (m)
DoorSpread_m: Mean distance between the doors during fishing operation (m)
NetOpen_m: Mean head-line height above seabed during fishing operation (m)
WingSwpArea_sqkm: Area of seabed swept by the net (square kilometers) - please consult documentation for details
WingSwpVol_CorF: Multiplier converts to ‘density by wing-swept volume - please consult documentation for details
DoorSwptArea_CorF: Multiplier converts to ‘density by door-swept area - please consult documentation for details
DoorSwptVol_CorF: Multiplier converts to ‘density by door-swept volume - please consult documentation for details
Haul ID: Composed unique identifier with naming structure: survey series/vessel/year/haul number. Allows merging with sample data file
Survey Acronym: Acronym to describe this survey dataset - used both in sampling info and biological data
Species SciName: Scientific species name
Aphia_Code: The APhiaID for the species. Prefix url for lookup is www.marinespecies.org/aphia.php?p=taxdetails&id=[Insert APhia_Code here]
Fish length_cm: Length of fish expressed in centimenters
Number: Number of fish reported in the trawl
DensAbund_N_Sqkm: Density of the fish species and size expressed as numbers per square kilometers when corrected for the swept area in each tow
DenBiom_kg_Sqkm: Density of the fish species and size expressed as kilograms biomass per square kliometer, when the abundance is corrected for swpet area in each tow and converted to biomass using a lenth:weight relationship.