Dataset, posterior summaries and posterior samples for quantifying fluctuating selection on seasonal migration versus residence in European shags

This dataset is associated with the manuscript Episodes of opposing survival and reproductive selection cause strong fluctuating selection on seasonal migration versus residence. Quantifying temporal variation in sex-specific selection on key ecologically relevant traits, and quantifying how such variation arises through synergistic or opposing components of survival and reproductive selection, is central to understanding eco-evolutionary dynamics but rarely achieved. Seasonal migration versus residence is one key trait that directly shapes spatio-seasonal population dynamics in spatially- and temporally-varying environments, but temporal dynamics of sex-specific selection have not been fully quantified. We fitted multi-event capture-recapture models to year-round ring resightings and breeding success data from partially-migratory European shags (Phalacrocorax aristotelis) to quantify temporal variation in annual sex-specific selection on seasonal migration versus residence arising thro...