Fig. 1
From: Biogas production from submerged macrophytes—a case study of regional biomass potentials in Germany

Mowing boat on the river Niers (North Rhine-Westphalia, Germany)
From: Biogas production from submerged macrophytes—a case study of regional biomass potentials in Germany
Mowing boat on the river Niers (North Rhine-Westphalia, Germany)