Herring larval surveys in the Celtic Sea and division VIIj in 1983/1984

Surveys for herring larvae in the Celtic Sea were conducted for the sixth ~ successive season between October 1983 and February 1984. The modifications made to the survey grid in the previous season to take account of the amalgamation of the Celtic Sea and Division VIIj for assessment purposes and to ascertain if larvae drift into the Irish Sea were also adopted for the 1983/84 surveys. A drift of larvae towards the Irish Sea was apparent in 1983/84. The larval abundance index for 1983/84 based on a standard survey area was almost three times higher than any previous value. A continuous increase in larval indices since 1978/79 indicates a recovery of the spawning stock.

URI

http://hdl.handle.net/10793/1490

Description

Peer-reviewed. This article can be found on the ICES website here: http://www.ices.dk/publications/our-publications/Pages/CM-documents.aspx

Citation

Grainger, R. J., Barnwall, E., & Cullen, A. (1984). Herring larval surveys in the Celtic Sea and division VIIj in 1983/1984. ICES CM 1984/H:29