The depth of oxygen penetration through bulk sediment in Lake Wohlen ranged from 0.9 to
7.2 mm. Oxygen uptake varied between 0.39 and 1.34 gO2m-2d-1(mean, 0.82 gO2m-2d-1). The
derived oxygen uptake had a positive correlation with sedimentation rate (R2=0.78). The oxygen consumption rate in sediment was transformed into carbon dioxide production (OC decomposition rate). Average CO2production ranged between 0.16 and 2.53 gC m-2d-1.