Table S1. Vascular plant biomass; for each vascular plant collected at the experimental plots during summer 2007 we calculated the above biomass (AB), the root biomass (RB) and the total biomass (TB); all values are expressed in gDWper m-2.

Station / plot / Species / AB / RB / TB / Plot
1C / 1 / Amaranthus chlorostachys / 4.48 / 1.26 / 5.74
Cyperus esculentus / 0.32 / 0.23 / 0.55 / 6.29
2 / Amaranthus chlorostachys / 19.04 / 4.6 / 23.64
Xanthium italicum / 0.31 / 0.09 / 0.4 / 24.04
3 / Amaranthus chlorostachys / 22.86 / 9.55 / 32.41
Cyperus esculentus / 0.13 / 0 / 0.13
Xanthium italicum / 1.16 / 0.21 / 1.37
Ranunclus sceleratus / 0.11 / 0 / 0.11
Conyza canadensis / 0.46 / 0.04 / 0.5 / 34.52
2D / 1 / Amaranthus chlorostachys / 0.28 / 0 / 0.28
Agrostis stolonifera / 5.41 / 2.24 / 7.65
Cyperus esculentus / 4.65 / 4.54 / 9.19
Cyperus aristatus / 2.79 / 2.24 / 5.03
Digitaria sanguinalis / 0.61 / 0.21 / 0.82
Polygonum lapathifolium / 2.11 / 0.41 / 2.52
Portulaca oleracea / 0.62 / 0.13 / 0.75
Spirodela polyrrhyza / 0.02 / 0 / 0 / 26.26
2 / Amaranthus chlorostachys / 0.32 / 0.29 / 0.61
Agrostis stolonifera / 6.43 / 2.96 / 9.39
Cyperus aristatus / 7.86 / 5.05 / 12.91
Cyperus esculentus / 0.44 / 0.69 / 1.13
Conyza canadensis / 0.03 / 0 / 0
Portulaca oleracea / 0.29 / 0.11 / 0.4 / 24.47
3 / Amaranthus chlorostachys / 0.36 / 0 / 0.36
Agrostis stolonifera / 7.65 / 3.72 / 11.37
Cyperus aristatus / 3.99 / 1.57 / 5.56
Cyperus esculentus / 3.52 / 2.83 / 6.35
Digitaria sanguinalis / 0.26 / 0 / 0.26
Lindernia dubia / 0.12 / 0 / 0.12
Polygonum lapathifolium / 2.06 / 0.57 / 2.63
Portulaca oleracea / 0.54 / 0 / 0.54 / 27.19
3B / 1 / Cyperus aristatus / 0.56 / 0.13 / 0.69
Cyperus esculentus / 6.02 / 6.34 / 12.36
Echinochloa crus-galli / 14.82 / 8.5 / 23.32
Xanthium italicum / 0.22 / 0.11 / 0.33 / 36.7
2 / Agrostis stolonifera / 4.65 / 2.54 / 7.19
Cyperus esculentus / 11.49 / 8.41 / 19.9
Lindernia dubia / 0.21 / 0.07 / 0.28
Xanthium italicum / 0.03 / 0 / 0 / 27.40
3 / Amaranthus chlorostachys / 0.35 / 0 / 0.35
Cyperus esculentus / 1.95 / 2.21 / 4.16
Echinochloa crus-galli / 16.93 / 10.02 / 26.95
Lindernia dubia / 0.35 / 0 / 0.35 / 31.81

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