International Blue Whiting Spawning Stock Survey (IBWSS) Spring 2022
Abstract
Coordination of the survey was initiated at the meeting of the Working Group on International Pelagic Surveys (WGIPS) in January 2022 and continued by correspondence until the start of the survey. During the survey, effort was refined and adjusted by the survey coordinator (Norway) using real time observations. Survey design was based on methods described in ICES Manual for International Pelagic Surveys (ICES, 2015). Overall, weather conditions were exceptional compared to 2021, with calm seas prevailing, providing optimal conditions for acoustic recordings. The entire survey was completed in 15 days, well below 21-day target threshold (Figure 4). Area coverage was considered comprehensive in both core and peripheral areas, with all vessels completing the planned routes, with the exception of the RV Celtic Explorer (Ireland) which returned to port 8 days early.Citation
Marine Institute, Wageningen Marine Research, Institute of Marine Research, Faroe Marine Research Institute, Danish Institute for Fisheries Research, & Spanish Institute of Oceanography (2022). International Blue Whiting Spawning Stock Survey (IBWSS) Spring 2022. Marine Institute, GalwayCollections
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International Blue Whiting Spawning Stock Survey (IBWSS) Spring 2014Coordination of the survey was initiated in the meeting of the Working Group on International Pelagic Surveys (WGIPS) and continued by correspondence until the start of the survey. During the survey, updates on vessel positions and trawl activities were collated by the survey coordinator and distributed to the participants twice daily. The survey design used and described in ICES (2014) allowed for a flexible setup of transects and good coverage of the spawning aggregations. Due to acceptable - good weather conditions throughout the survey period, the survey resulted in a high quality coverage of the stock. Transects of all vessels were consistent in spatial coverage and timing, delivering full coverage of the respective distribution areas within 14 days.
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International Blue Whiting Spawning Stock Survey (IBWSS) Spring 2018Coordination of the survey was initiated in the meeting of the Working Group on International Pelagic Surveys (WGIPS) and continued by correspondence until the start of the survey. During the survey effort was refined and adjusted by the survey coordinator (Norway) using real time observations. The survey design was based on methods described in ICES Survey design Manual (2015). Overall weather conditions were mixed with periods of poor and good weather. All vessels experienced some downtime due to poor weather conditions. The entire survey was completed within 20 days, below the 21 day target threshold.
