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Table 4 Frequency of de-weeding in flowing and standing waters in Germany

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

Type of water body Total number of water bodies de-weeded Number of water bodies de-weeded yearly Number of water bodies not de-weeded yearly Number of water bodies, frequency of de-weeding unknown
Flowing water bodies 172 144 19 9
Standing water bodies 93 30 22 41