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Table 1 Biomass of waterweed in the river Parthe: quantitative determination of biomass growth in an area of 1 m2

From: The study of the variability of biomass from plants of the Elodea genus from a river in Germany over a period of two hydrological years for investigating their suitability for biogas production

Date

Fresh mass [kg/m2]

TS [% FM]

TS [kg/m2]

VS [% TS]

VS [kg/m2]

06-06-2016a

12.2

5.2

0.6

82.7

0.5

12-07-2016a, b

20.6

6.5

1.3

76.4

1.0

08-08-2016

11.4 ± 3.0

6.1 ± 0.0

0.7 ± 0.2

79.7 ± 0.1

0.6 ± 0.1

12-09-2016

13.6 ± 1.5

6.2 ± 0.0

0.4 ± 0.1

78.3 ± 0.2

0.7 ± 0.1

10-10-2016

9.8 ± 2.5

6.9 ± 0.1

0.7 ± 0.2

74.3 ± 0.2

0.5 ± 0.1

  1. TS total solids, VS volatile solids
  2. aOnly single sampling without repetition (therefore, no standard deviation can be given)
  3. bHarvest approx. 1 km downstream; the water was deeper here, which meant that the plants had more room to grow