Figure 7
From: The chemical succession in anoxic lake waters as source of molecular diversity of organic matter
The leaking carbon cycle between hypolimnion and sediment, driven by redox fluctuations (oxic/anoxic) of the water column. Labile organic matter (yellow) is delivered to lakes in protected form on particulate but mobile Fe oxides (black). Anoxic conditions break up this protection so that labile terrestrial carbon is released to the water column. Reoxidation of the hypolimnion does not precipitate the larger share of the DOM pool, which instead may be mineralized or transported downstream.
