Fig. 1: Sampling stations and surface diazotroph abundances.
From: Diazotrophs are overlooked contributors to carbon and nitrogen export to the deep ocean
A Satellite-derived surface chlorophyll a concentrations during the GPpr14 cruise (1 November-6 December 2019) (MODIS Aqua, 4 km, 8-days composite, level 3 product). Black triangles correspond to stations where surface-tethered drifting sediment traps were deployed (170 m, 270 m, 1000 m). Grey dots correspond to stations where Marine Snow Catcher (MSC) casts were performed at three depths (see Methods), and white dots to MSC casts performed at one depth (200 m). Black circles correspond to stations where the bottlenet profiles were performed between 2000 m and 200 m. B Abundances (Log10 nifH gene copies L−1) of the five nifH phylotypes targeted over the transect (dots represent abundances averaged over the photic layer, ~0–100 m).
