to-measure ecosystem processes from the water’s surface to the deep seas of the Antarctic and Arctic Oceans using marker pigments. After completing her PhD, from 1998 she worked at Scripps Institution of [...] microplastic in Arctic sea ice in 2018, which attracted considerable media attention, Ilka Peeken has given frequent interviews and talks at events and in schools. Furthermore, she advises the Arctic Council on [...] Kiel, where, until 2008, she studied the effect of the micronutrient iron on algae in the Southern Ocean (in-situ iron fertilisation experiments “EisenEx” and “EIFEX”). In addition, she focused on which