Research Document 2020/008

Updated herring spawning biomass estimates for German Bank and Scots Bay based on spawning ground turnover rates from tag returns

By Melvin, G.D., Singh, R, Martin, R., and Power, M.J.

Abstract

This paper updates the acoustic biomass estimates based on turnover presented at the Herring Assessment meeting in March 2013 and published in Melvin et al. (2014). In addition to updating the acoustic biomass estimates based on turnover to current year (2017), the data calculations used in 2013 were revisited and rechecked for accuracy and the biomass estimates amended where necessary. The acoustic biomass estimates were then analysed and presented in a manner and format as was done in the acoustic summary document (Singh et al. 2016) including the determination of the 3-year moving average and the Limit Reference Point (LRP).

Research Document 2020/008 (PDF, 1,442 KB)

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