Non-native species Number of measured individuals Frequency of occurrence (%) Difference in herbivore pressure (binary data of undamaged vs. damaged leaves in a cbind matrix) Difference in herbivore pressure (binary data of undamaged vs. damaged leaves in a cbind matrix) Difference in herbivore pressure (binary data of undamaged vs. damaged leaves in a cbind matrix)
Df Chisq P
Xanthium sibiricum 54 64.3 17 107.97 < 0.001
Bidens biternata 45 53.6 14 69.79 < 0.001
Amaranthus blitum 39 46.4 12 7.19 0.845
Amaranthus tricolor 33 39.3 10 16.41 0.088
Abutilon indicum 30 35.7 9 6.06 0.734
Phytolacca acinosa 27 32.1 8 8.22 0.412
Datura metel 15 17.9 4 12.14 0.016
Erigeron acer 12 14.3 3 0.25 0.969
Rhus chinensis 12 14.3 3 1.11 0.775
Solidago decurrens 12 14.3 3 1.21 0.752
Aster indicus 9 10.7 2 5.57 0.062
Bidens tripartita 9 10.7 2 0.15 0.929
Hibiscus mutabilis 9 10.7 2 1.46 0.482
Ipomoea aquatica 9 10.7 2 0.60 0.741
Setaria viridis 45 53.6
Cirsium arvense 42 50.0
Taraxacum mongolicum 42 50.0
Artemisia argyi 27 32.1
Eclipta prostrata 15 17.9
Sonchus wightianus 12 14.3
Artemisia sacrorum 9 10.7
Aster ageratoides 9 10.7
Cirsium japonicum 9 10.7
Lactuca indica 9 10.7
Alternanthera sessilis 6 7.1
Chloris virgata 6 7.1
Digitaria sanguinalis 6 7.1
Eupatorium chinense 6 7.1
Eupatorium fortunei 6 7.1
Imperata cylindrica 6 7.1
Ixeris chinensis 6 7.1
Plantago asiatica 6 7.1
Portulaca oleracea 6 7.1
Pulsatilla chinensis 6 7.1
Solanum nigrum 6 7.1
Sonchus oleraceus 6 7.1
Cynodon dactylon 6 7.1
Artemisia carvifolia 3 3.6
Artemisia scoparia 3 3.6
Bolboschoenus yagara 3 3.6
Bothriospermum chinense 3 3.6
Carduus nutans 3 3.6
Chrysanthemum lavandulifolium 3 3.6
Coreopsis basalis 3 3.6
Cyperus rotundus 3 3.6
Elephantopus scaber 3 3.6
Euphorbia thymifolia 3 3.6
Gaillardia pulchella 3 3.6
Helianthus annuus 3 3.6
Hydrocotyle sibthorpioides 3 3.6
Ixeris japonica 3 3.6
Lactuca raddeana 3 3.6
Rehmannia glutinosa 3 3.6
Salvia plebeia 3 3.6
Silene conoidea 3 3.6
Torilis scabra 3 3.6
Tribulus terrestris 3 3.6
Trifolium repens 3 3.6
Trigonotis peduncularis 3 3.6