Title: Scientific, Technical and Economic Committee for Fisheries (STECF) - Multispecies management plans for the Baltic (STECF-12-06)
Editors: SIMMONDS John
GAMITO JARDIM JOSÉ ERNESTO
Publisher: Publications Office of the European Union
Publication Year: 2012
JRC N°: JRC70982
ISBN: 978-92-79-24799-6
ISSN: 1831-9424
Other Identifiers: EUR 25312 EN
OPOCE LB-NA-25312-EN-N
URI: http://publications.jrc.ec.europa.eu/repository/handle/JRC70982
DOI: 10.2788/25697
Type: EUR - Scientific and Technical Research Reports
Abstract: This document forms the report and STECF opinion of EWG 111-02 which met in Rostock, Germany to provide an impact assessment report for Baltic stocks of cod, herring and sprat. This Impact Assessment report concentrated mainly on the multispecies evaluation of Eastern Baltic cod, Central Baltic herring and Baltic sprat and includes both biological an economic studies. The document also provides exploitation Fmsy values and a range of B trigger options for herring in Gulf of Riga, Bothnian Sea and Western Baltic stocks. The report presents a wide range of deterministic evaluations were carried out to indicate the range of Fs associated with MSY for the three species. From this a range of F values a small range were selected giving high yield for all three stocks. From this three specific scenarios were selected for stochastic evaluation. The report presents some concerns regarding the possibility to model multispecies aspects predictably for the future. In particular the multi-species aspects depend on predation data from mainly the 1980s and there is an urgent need to update the information base. Also the current regime in terms of productivity and spatial distribution of fish stocks in the Baltic is different from the earlier period when predation data was collected.
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