This study advances our understanding of sources and distributions of alkylamines, particularly in the Southern Ocean and Antarctica, where they play an important role in marine nutrient cycling and food webs. Alkylamines are also important components of aerosols, influencing cloud formation and climate processes. This study is an important contribution for a better understanding ecosystem dynamics in polar environments and their implications for atmospheric processes in Antarctica, where the sources, distributions and marine biogeochemical cycles of nutrients are poorly understood.