• International Blue Whiting Spawning Stock Survey (IBWSS) Spring 2017

      Marine Institute; Wageningen Marine Research; Institute of Marine Research; PINRO; Faroe Marine Research Institute; Marine Scotland Marine Laboratory; Johann Heinrich von Thünen-Institut; Danish Institute for Fisheries Research; BirdWatch Ireland; Irish Whale and Dolphin Group; UCC; Working Group on International Pelagic Surveys; Working Group on Widely Distributed Stocks (Marine Institute, 2017)
      Coordination 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 coordinator based on real time observations. The survey design applied followed methods described in ICES Survey design Manual (2015) and allowed for a flexible transect design and comprehensive coverage of the spawning aggregations. Overall weather conditions were mixed with periods of poor and good weather. All vessels, with the exception of Kings Bay experienced some downtime due to conditions with the Faroes experiencing the most prolonged period of bad weather at the end of the survey period. The entire survey was undertaken within 20 days and below the 21 day target threshold. The bulk of the survey was temporally consistent with the exception of one transect in the southern Rockall Trough.