As you might have noticed, there are no blogs about mackerel catches. That is not a coincidence. The mackerel swept-area catch numbers are sensitive scientific information as these information is used to calculate an age-segregated biomass index included in stock assessment.
After the survey, participants from the six vessels meet, compile the catch numbers, acoustic data, and environmental data from all vessels, and analyze the data. Information about the survey (design, coverage, sampling program) and survey results, including age-segregated biomass index for mackerel, herring and blue whiting, are summarized in a survey report. According to an agreement between all survey participants, the survey results are first presented to participants of the stock assessment meeting of the ICES Working Group on Widely Distributed Stocks (WGWIDE). The survey report is made publicly available few hours after being presented to the WGWIDE meeting.
Results of the 2019 IESSNS survey will be made publicly available during the 2019 WGWIDE meeting scheduled for the week of August 28 to September 3. The format of the survey report is similar between years. If you are interested, here is a link to the 2018 IESSNS survey report: Survey report all vessels IESSNS 2018.
Furthermore, we publish a separated report about the Icelandic participation in the IESSNS where information is included about all research projects which we sample data for.