Stock-recruitment relationships for exploited
fishery stocks quite often show large deviations from theoretical
curves. This results from the tremendous variability in survival
rates in the early life stages of marine species. In the synthesis
phase of the PICES CCCC Program, comparison of life-history strategies
in relation to climate changes are recommended for pollock, pink
salmon, capelin, sardines, anchovies, saury, euphausiids, squids,
and others. Among the potential causes of succession of different
life-history strategists, recruitment variability is one of the
most important factors. To perform scientific management for target
species, appropriate modeling of recruitment processes, including
environmental effects, is needed. Under this theme, we will review
the temporal and spatial variability of recruitment processes of
key species, their linkages to climate changes, human impacts and
regional ecosystem structure. Moreover, we will explore new methodologies
to plug the gaps between data and the current state of modeling.
Invited speaker: Lorenzo Ciannelli (Centre for
Ecologial and Evolutionary Synthesis, University of Oslo, Norway) and Maki Suda (National Research Institute of Fisheries Science, Japan)