NAFO/ICES Pandalus Assessment Group Meeting, 1-4 November 2021

Report of the NAFO/ICES Pandalus Assessment Group Meeting held by WebEx from 1 to 4 November 2021Versión del editor

Results from Bottom Trawl Survey on Flemish Cap of June-July 2016.

A stratified random bottom trawl survey on Flemish Cap was carried out from June 22th to July 23th 2016. The area surveyed was extended up to depths of 800 fathoms (1460 meters) following the same procedures as in previous years and 181 fishing stations planned. The survey was carried out by the R/V Vizconde de Eza with the usual survey gear (Lofoten). A total of 181 valid hauls were made by the vessel R/V Vizconde de Eza, 120 up to 730 meters depth and 61 up to 1460 meters. Survey results including abundance indices of the main commercial species and age distributions for cod, redfish, American plaice, Greenland halibut, roughhead grenadier and shrimp are presented. The general indexes for this year are estimated taken into account the traditional swept area (strata 1- 19, up to depths of 730 m.) and the total area surveyed (strata 1-34, up to depths of 1460 m.).Postprin

Report of the Scientific Council (in conjunction with NIPAG) Meeting, 1-4 November 2021

Report of the Scientific Council (in conjunction with NIPAG) Meeting held by WebEx from 1 to 4 November 2021Versión del editor

Results from Bottom Trawl Survey on Flemish Cap of June-July 2010

A stratified random bottom trawl survey on Flemish Cap was carried out from June 21st to July 22nd 2010. The area surveyed was extended up to depths of 800 fathoms (1400 meters) following the same procedures as in previous years and decreasing the number of hauls planned (158). The survey was carried out by the R/V Vizconde de Eza with the usual survey gear (Lofoten). A total of 153 valid hauls were made by the vessel R/V Vizconde de Eza, 97 up to 730 meters depth and 56 up to 1400 meters. Survey results including abundance indices of the main commercial species and age distributions for cod, redfish, American plaice, Greenland halibut and Shrimp are presented. The general indexes for this year are estimated taken into account the traditional swept area (strata 1-19, up to depths of 730 m.) and the total area surveyed (strata 1-34, up to depths of 1400 m.)

Results from Bottom Trawl Survey on Flemish Cap of July 2004

A stratified random bottom trawl survey on Flemish Cap was carried out from June 25th to August 2nd 2004. This year, the area surveyed was extended up to depths of 800 fathoms (1400 meters) following the same procedures as in previous years and increasing the number of hauls planned (195). The survey was carried out by the R/V Vizconde de Eza and the last eleven days of the surveys were used to make 61 paired hauls with the R/V Cornide de Saavedra and to conclude the comparative fishing trial for calibration initiated in 2003 between the former vessel and the new one. A total of 124 valid hauls were made by the vessel R/V Vizconde de Eza with the usual survey gear (Lofoten) up to 730 meters depth. Survey results including abundance indices of the main commercial species and age distributions for cod, redfish, American plaice and Greenland halibut are presented. The general indexes for this year are estimated taken into account the traditional swept area (strata 1-19, up to depths of 730m) and the total area surveyed (strata 1-34, up to depths of 1400m). From the comparative fishing trial carried out during 2003 and 2004, the correction factors for the main species were estimatad and the indexes from 1988 to 2002 were corrected to the scale of the new vessel. In the same way the corrected abundance at age indices was presented for cod, American plaice, redfish and Greenland halibut

Results from Bottom Trawl Survey on Flemish Cap of June-July 2014

A stratified random bottom trawl survey on Flemish Cap was carried out from June 25th to July 23th 2014. The area surveyed was extended up to depths of 800 fathoms (1460 meters) following the same procedures as in previous years and 181 fishing stations planned. The survey was carried out by the R/V Vizconde de Eza with the usual survey gear (Lofoten). A total of 181 valid hauls were made by the vessel R/V Vizconde de Eza, 118 up to 730 meters depth and 56 up to 1460 meters. Survey results including abundance indices of the main commercial species and age distributions for cod, redfish, American plaice, Greenland halibut, roughhead grenadier and shrimp are presented. The general indexes for this year are estimated taken into account the traditional swept area (strata 1-19, up to depths of 730 m.) and the total area surveyed (strata 1-34, up to depths of 1460 m.)

Calculation of the Calibration Factors from the Comparative Experience between the R/V Cornide de Saavedra and the R/V Vizconde de Eza in Flemish Cap in 2003 and 2004

EU carries out a stratified random summer bottom trawl survey in Flemish Cap, Division 3M of the NAFO Regulatory Area, since 1988. Since 1991, the survey was made with the R/V Cornide de Saavedra. In 2003, this vessel was replaced for the R/V Vizconde de Eza, so, in order to maintain the series obtained from the old vessel, a two year comparative fishing trial betweel the two vessels was made in the years 2003 and 2004. This work presents the methods used for the transformation of the series and their results for biomass and length distribution for the principal species in the area: Atlantic cod, American plaice, Redfish (Sebastes fasciatus, Sebastes marinus, Sebastes mentella and Sebastes juveniles), Greenland halibut, Roughhead grenadier and Northern shrimp. For all the species except for Roughhead grenadier the R/V Vizconde de Eza is more efficient that the R/V Cornide de Saavedra for the biomass, with values of FPC varying between 1.0159 (Greenland halibut) and 1.4455 (Juvenile redfish). In lengths, in all species except for Roughhead grenadier too, the new vessel is more efficient catching the smallest individuals and less or equal efficient for the biggest lengths

Results from Bottom Trawl Survey on Flemish Cap of June-July 2008

A stratified random bottom trawl survey on Flemish Cap was carried out from June 18th to July 22th 2008. The area surveyed was extended up to depths of 800 fathoms (1400 meters) following the same procedures as in previous years and decreasing the number of hauls planned (175). The survey was carried out by the R/V Vizconde de Eza with the usual survey gear (Lofoten). A total of 167 valid hauls were made by the vessel R/V Vizconde de Eza, 111 up to 730 meters depth and 56 up to 1400 meters. Survey results including abundance indices of hte main commercial species and age distributions for cod, redfish, American plaice, Greenland halibut and shrimp are presented. The general indexes for this year are estimated taken into account the traditional swept area (strata 1-19, up to depths of 730 m)

Results from Bottom Trawl Survey on Flemish Cap of June-July 2012

A stratified random bottom trawl survey on Flemish Cap was carried out from June 26th to July 24th 2012. The area surveyed was extended up to depths of 800 fathoms (1460 meters) following the same procedures as in previous years and 181 fishing stations planned. The survey was carried out by the R/V Vizconde de Eza with the usual survey gear (Lofoten). A total of 174 valid hauls were made by the vessel R/V Vizconde de Eza,118 up to 730 meters depth and 56 up to 1460 meters. Survey results including abundance indices of the main commercial species and age distributions for cod, redfish, American plaice, Greenland halibut, roughhead grenadier and shrimp are presented. The general indexes for this year are estimated taken into account the traditional swept area (strata 1-19, up to depths of 730 m.) and the total area surveyed (strata 1-34, up to depths of 1460 m.)

Results from Bottom Trawl Survey on Flemish Cap of June-July 2019

A stratified random bottom trawl survey on Flemish Cap was carried out from 1 to 27 July 2019. The area surveyed was extended up to depths of 800 fathoms (1460 meters) following the same procedures as in previous years and 181 fishing stations planned. The survey was carried out by the R/V Vizconde de Eza with the usual survey gear (Lofoten). A total of 180 valid hauls were made by the vessel R/V Vizconde de Eza, 120 up to 730 meters depth and 61 up to 1460 meters. Survey results including abundance indices of the main commercial species and age distributions for cod, redfish, American plaice, Greenland halibut, roughhead grenadier, squid and shrimp are presented. The general indexes for this year are estimated taken into account the traditional swept area (strata 1-19, up to depths of 730 m.) and the total area surveyed (strata 1-34, up to depths of 1460 m.).Versión del editor