The organic muck is 'processed' or naturally recycled by the living organisms in the system similar to all the agricultural fodder in the fields after crop harvest. Where do all the leaves go in a woodland trout stream after leaf drop in the fall?? You are on the right thinking process when you say: "becoming some other physical item, biomass change, or energy production".
Deep muck production is a sign the area where the thick muck is located is not a real healthy environment or conditions or else the large accumulations of dead organics would not be present. Keep in mind that in anaerobic conditions (no DO) the decomposition rate is 20-30 times slower than in well oxygenated conditions. The 'fast' and 'clean' natural processors can not live or survive in anaerobic conditions.
Last edited by Bill Cody; 06/06/14 10:53 AM.