Figure 4
From: The chemical succession in anoxic lake waters as source of molecular diversity of organic matter
Formula presence/absence within samples used in nonlinear multidimensional scaling (NMDS) to visualize the level of chemical sample similarity. 2-dimensional stress = 0.09. Symbols indicate DOM origin, color reflect ambient oxygen availability. Ellipses delineate standard deviations around group averages of DOM from oxic and anoxic waters, respectively. One sample taken under ice was eliminated from the dataset (grey, right) because of the unknown redox history of this sample from the first campaign.
