Fig. 1 | Nature Communications

Fig. 1

From: Non-linear response of summertime marine productivity to increased meltwater discharge around Greenland

Fig. 1

Indicators of NO3 or Fe limitation. a Mean World Ocean Atlas (WOA) surface NO3 concentrations for summer (June, July and August). Gray lines mark the 1 km isobath. b Fe* (circles) derived from summertime dissolved Fe and NO3 data, and observations of Fe limitation (red stars) and NO3 limitation (blue stars) in shipboard bioassays. Gray shading represents bathymetry <1 km depth. c Satellite-derived quantum yield of fluorescence for June, July and August climatological average (2002–2016). Higher quantum yields (red colors) potentially indicate higher Fe stress

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