Occasionally, ecosystem modellers run into issues where
gender-split populations need explicit modelling. This can occur when empirical
data is only available for male or female specimens, or when males and females
of key species have markedly different behaviours. We have made a small
modification to the Ecopath with Ecosim (EwE) multi-stanza model (Christensen and
Walters, 2004),
that allows linking recruitment to ensure proportional spawning between two
multi-stanza groups, and thus connecting two gender-spilt populations at their
foundation.
Funding
EISA: Ecology and management of the invasive snow crab (https://www.akvaplan.niva.no/en/projects-networks/eisa/)