Evaluating the effectiveness of seabird bycatch mitigation measures for pelagic longlines in the South Atlantic

Incidental mortality (bycatch) of seabirds in pelagic longline fisheries remains a major threat to many populations. The design and implementation of technical innovations aimed at reducing seabird bycatch rates have long been a focus of research. The design and implementation of technical innovations aimed at reducing seabird bycatch rates have long been a focus of research. However, it has historically been difficult to extrapolate the efficacy of a particular mitigation measure to the scale of seabird populations or oceanic basins. Here, we develop an ecological risk assessment for five populations of threatened albatross and petrel species that forage in the south Atlantic Ocean.