Estimation of predation mortalities on capelin using a cod - capelin model for the Barents Sea
Working paper
Permanent lenke
http://hdl.handle.net/11250/104795Utgivelsesdato
1990Metadata
Vis full innførselSamlinger
Originalversjon
This report is not to be cited without prior reference to the authorsSammendrag
The Barents Sea capelin stock collapsed during the period 1983-1986. One of the main factors
causing the collapse was a rapid increase in consumption of capelin by cod. Based on
measurements of stomach evacuation rates in the appropriate temperature interval and data
from a combined Soviet-Norwegian stomach sampling programme, predation mortalities are calculated by a simplified version of the IMR multispecies model for the Barents Sea -
MULTSPEC. Cod-capelin interaction parameters and migration parameters for capelin in
MULTSPEC are also estimated. The use of the predation mortalities calculated from the
multispecies model in a single-species model used for capelin management is discussed.