Correction : Hansen , A . , et al . CUDe — Carbon Utilization Degree as an Indicator for Sustainable Biomass Use . Sustainability 2016 , 8 , 1028

Anja Hansen 1,2,*, Jörn Budde 1, Yusuf Nadi Karatay 1,2 and Annette Prochnow 1,2 1 Leibniz Institute for Agricultural Engineering and Bioeconomy (ATB), Max–Eyth–Allee 100, 14469 Potsdam, Germany; jbudde@atb-potsdam.de (J.B.); ykaratay@atb-potsdam.de (Y.N.K.); aprochnow@atb-potsdam.de (A.P.) 2 Faculty of Life Sciences, Humboldt–Universität zu Berlin, Invalidenstraße 42, 10115 Berlin, Germany * Correspondence: ahansen@atb-potsdam.de; Tel.: +49-331-5699-223

The authors wish to make the following corrections to this paper [1]: (1) In the manuscript, the following text above Figure 2 should be replaced: "[…] CUDe of 63.4% (CUDe = 2% + 32.4% + 29.0%; Boundary II in Figure 2)." with "[…] CUDe of 63.3% (CUDe = 2% + 32.4% + 28.9%; Boundary II in Figure 1)." (2) Figures 1 and 2 should be replaced:        The authors would like to apologize for any inconvenience caused to the readers by these changes.The change does not affect the scientific results.The manuscript will be updated and the original will remain online on the article webpage.

Figure 1 .
Figure 1.Carbon flows as a percentage of carbon fixed in harvestable biomass Cin, including stubble, and the resulting productive (grey arrows) and unproductive C (hatched arrows) during biogas generation from maize (Boundary I) and further use of this biogas in a combined heat and power (CHP) unit (Boundary II).

Figure 1 .
Figure 1.Carbon flows as a percentage of carbon fixed in harvestable biomass C in , including stubble, and the resulting productive (grey arrows) and unproductive C (hatched arrows) during biogas generation from maize (Boundary I) and further use of this biogas in a combined heat and power (CHP) unit (Boundary II).

Figure 2 .Figure 1 .
Figure 2. Carbon flows as a percentage of carbon fixed in harvestable biomass Cin, including stubble, and the resulting productive (grey arrows) and unproductive C (hatched arrows) during biogas generation from maize (Boundary I) and further upgrading to bio-methane by conversion in a combined heat and power (CHP) unit, as well as separation of CO2 for further industrial use (Boundary II).

Figure 2 .
Figure 2. Carbon flows as a percentage of carbon fixed in harvestable biomass C in , including stubble, and the resulting productive (grey arrows) and unproductive C (hatched arrows) during biogas generation from maize (Boundary I) and further upgrading to bio-methane by conversion in a combined heat and power (CHP) unit, as well as separation of CO 2 for further industrial use (Boundary II). with

Figure 2 .Figure 1 .
Figure 2. Carbon flows as a percentage of carbon fixed in harvestable biomass Cin, including stubble, and the resulting productive (grey arrows) and unproductive C (hatched arrows) during biogas generation from maize (Boundary I) and further upgrading to bio-methane by conversion in a combined heat and power (CHP) unit, as well as separation of CO2 for further industrial use (Boundary II).

Figure 1 .
Figure 1.Carbon flows as a percentage of carbon fixed in harvestable biomass C in , including stubble, and the resulting productive (grey arrows) and unproductive C (hatched arrows) during biogas generation from maize (Boundary I) and further use of this biogas in a combined heat and power (CHP) unit (Boundary II).

Figure 2 .
Figure 2. Carbon flows as a percentage of carbon fixed in harvestable biomass Cin, including stubble, and the resulting productive (grey arrows) and unproductive C (hatched arrows) during biogas generation from maize (Boundary I) and further upgrading to bio-methane by conversion in a combined heat and power (CHP) unit, as well as separation of CO2 for further industrial use (Boundary II).

Figure 2 .
Figure 2. Carbon flows as a percentage of carbon fixed in harvestable biomass C in , including stubble, and the resulting productive (grey arrows) and unproductive C (hatched arrows) during biogas generation from maize (Boundary I) and further upgrading to bio-methane by conversion in a combined heat and power (CHP) unit, as well as separation of CO 2 for further industrial use (Boundary II).