Location of the sampling stations during the Green Edge expedition. Hydrology, nutrients, and pigment analysis were performed at all stations (black dots and green circles). The silicon cycle was studied at stations indicated by green circles. Transects T1 to T7 are numbered following their chronological order of sampling. Transects were sampled during the following periods: T1, 9–13 June; T2, 14–17 June; T3, 17–22 June; T4, 24–29 June; T5, 29 June–3 July; T6, 3–7 July; T7, 7–10 July. The black dashed line represents the approximate location of the ice edge at the time of sampling of each transect. Stations located west of this line were covered by sea ice when sampled. DOI: https://doi.org/10.1525/elementa.382.f1