Table S. List of Plant Species Included in Analyses. Only Species Occurring in Greater

Table S. List of plant species included in analyses. Only species occurring in greater than 5% of samples (at least 2 observations) were included in the ordination analysis; all species were included in generalized linear mixed models for community comparisons

Species name / Abbreviation / # of obs. / Plant type / Nativeness / Dispersal / Nectar and pollen plant /
Acalypha australis / ACAU / 6 / Herbaceous / Native / Abiotic
Acer ginnala / ACGI / 7 / Woody / Native / Abiotic / May - Jul
Acer pseudosieboldianum / ACPS / 1 / Woody / Native / Abiotic
Ambrosia artemisiifolia / AMAR / 19 / Herbaceous / Introduced / Abiotic / Jun - Aug
Artemisia feddei / ARFE / 11 / Herbaceous / Native / Abiotic / Aug - Sep
Artemisia princeps / ARPR / 28 / Herbaceous / Native / Abiotic / Jul - Sep
Arthraxon hispidus / ARHI / 1 / Herbaceous / Native / Biotic
Asperula lasiantha / ASLA / 1 / Herbaceous / Native / Biotic / Jul - Aug
Aster incisus / ASIN / 1 / Herbaceous / Native / Biotic / Aug - Sep
Aster koraiensis / ASKO / 2 / Herbaceous / Native / Abiotic / Jun - Sep
Betula davurica / BEDA / 2 / Woody / Native / Abiotic
Bidens frondosa / BIFR / 12 / Herbaceous / Introduced / Biotic / Sep - Oct
Calamagrostis arundinacea / CAAR / 1 / Herbaceous / Native / Abiotic
Calystegia japonica / CAJA / 4 / Herbaceous / Native / Abiotic / Jun - Aug
Cassia mimosoides / CAMI / 6 / Herbaceous / Native / Abiotic / Jul - Aug
Chenopodium album / CHAL / 10 / Herbaceous / Introduced / Abiotic / Jul - Aug
Chrysanthemum zawadskii / CHZA / 8 / Herbaceous / Native / Abiotic / Sep - Oct
Codonopsis lanceolata / COLA / 1 / Herbaceous / Native / Abiotic / Aug - Sep
Commelina communis / COCO / 22 / Herbaceous / Native / Abiotic / Jul - Aug
Corylus heterophylla / COHE / 2 / Woody / Native / Biotic / Mar
Cyperus amuricus / CYAM / 1 / Herbaceous / Native / Abiotic
Cyperus iria / CYIR / 3 / Herbaceous / Native / Abiotic
Cyperus microiria / CYMI / 3 / Herbaceous / Native / Abiotic
Dendranthema boreale / DEBO / 15 / Herbaceous / Native / Abiotic / Sep - Oct
Desmodium oxyphyllum / DEOX / 1 / Herbaceous / Native / Biotic
Digitaria ciliaris / DICI / 17 / Herbaceous / Native / Biotic
Dioscorea japonica / DIJA / 2 / Herbaceous / Native / Abiotic / Jun - Jul
Dunbaria villosa / DUVI / 5 / Herbaceous / Native / Abiotic / Jul - Aug
Echinochloa crusgalli / ECCR / 7 / Herbaceous / Native / Abiotic
Elsholtzia splendens / ELSP / 1 / Herbaceous / Native / Biotic / Sep - Oct
Equisetum arvense / EQAR / 3 / Herbaceous / Native / Abiotic
Eragrostis ferruginea / ERFE / 1 / Herbaceous / Native / Biotic
Erigeron annuus / ERAN / 10 / Herbaceous / Introduced / Abiotic / Jun - Sep
Erigeron canadensis / ERCA / 7 / Herbaceous / Introduced / Abiotic / Jul - Sep
Galium dahuricum / GADA / 2 / Herbaceous / Native / Abiotic
Geranium sibiricum / GESI / 5 / Herbaceous / Native / Abiotic / Jun - Aug
Glycine soja / GLSO / 22 / Herbaceous / Native / Abiotic / Jul - Aug
Hibiscus trionum / HITR / 1 / Herbaceous / Introduced / Abiotic / Jul - Aug
Humulus japonicus / HUJA / 11 / Herbaceous / Native / Abiotic / Jul - Aug
Impatiens textori / IMTE / 2 / Herbaceous / Native / Abiotic / Aug - Sep
Leonurus sibiricus / LESI / 2 / Herbaceous / Native / Abiotic / Jul - Aug
Lespedeza cyrtobotrya / LECY / 8 / Woody / Native / Abiotic / Jul - Aug
Lespedeza maximowiczii / LEMA / 1 / Woody / Native / Abiotic / Jun - Jul
Lindera obtusiloba / LIOB / 1 / Woody / Native / Biotic / Mar
Lysimachia barystachys / LYBA / 1 / Herbaceous / Native / Abiotic / Jun - Aug
Melampyrum roseum / MERO / 3 / Herbaceous / Native / Abiotic / Jul - Aug
Melandryum firmum / MEFI / 1 / Herbaceous / Native / Abiotic / Jul - Aug
Metaplexis japonica / MEJA / 4 / Herbaceous / Native / Abiotic / Jul - Aug
Miscanthus sinensis / MISI / 3 / Herbaceous / Native / Abiotic
Mosla dianthera / MODI / 3 / Herbaceous / Native / Abiotic / Jul - Sep
Mosla punctulata / MOPU / 1 / Herbaceous / Native / Abiotic / Aug - Sep
Nepeta cataria / NECA / 1 / Herbaceous / Native / Biotic / Jun - Aug
Oenothera odorata / OEOD / 5 / Herbaceous / Introduced / Abiotic / Jul - Aug
Oplismenus undulatifolius / OPUN / 1 / Herbaceous / Native / Biotic
Oxalis corniculata / OXCO / 4 / Herbaceous / Native / Abiotic / May - Aug
Panicum bisulcatum / PABI / 1 / Herbaceous / Native / Abiotic / Aug - Sep
Panicum dichotomiflorum / PADI / 1 / Herbaceous / Introduced / Biotic
Patrinia scabiosaefolia / PASC / 1 / Herbaceous / Native / Abiotic / Jul - Sep
Patrinia villosa / PAVI / 2 / Herbaceous / Native / Abiotic / Jul - Aug
Persicaria hydropiper / PEHY / 13 / Herbaceous / Native / Abiotic / Jun - Sep
Persicaria japonica / PEJA / 2 / Herbaceous / Native / Abiotic / Jul - Aug
Persicaria lapathifolia / PELA / 3 / Herbaceous / Native / Abiotic / Jun - Sep
Persicaria nodosa / PENO / 1 / Herbaceous / Native / Abiotic / Jul - Sep
Persicaria sagittata / PESA / 2 / Herbaceous / Native / Abiotic / Aug - Oct
Persicaria senticosa / PESE / 6 / Herbaceous / Native / Biotic / Jul - Aug
Persicaria thunbergii / PETH / 4 / Herbaceous / Native / Abiotic / Aug - Sep
Persicaria vulgaris / PEVU / 4 / Herbaceous / Native / Abiotic / May - Jun
Phragmites japonica / PHJA / 4 / Herbaceous / Native / Abiotic
Pinus densiflora / PIDE / 5 / Woody / Native / Abiotic
Platycodon grandiflorum / PLGR / 2 / Herbaceous / Native / Abiotic / Jul - Aug
Poa sphondylodes / POSP / 1 / Herbaceous / Native / Abiotic
Polygonatum odoratum / POOD / 2 / Herbaceous / Native / Biotic / Jun - Jul
Polygonum longisetum / POLO / 9 / Herbaceous / Native / Abiotic / Jun - Sep
Populus tomentiglandulosa / POTO / 1 / Woody / Introduced / Abiotic
Potentilla fragarioides / POFR / 2 / Herbaceous / Native / Biotic / Apr - June
Prunus davidiana / PRDA / 1 / Woody / Native / Biotic / Apr - May
Pteridium aquilinum / PTAQ / 2 / Herbaceous / Native / Abiotic
Pueraria lobata / PULO / 8 / Herbaceous / Native / Biotic / Jun - Aug
Quercus dentata / QUDE / 7 / Woody / Native / Biotic / May
Quercus variabilis / QUVA / 1 / Woody / Native / Biotic / May
Rosa multiflora / ROMU / 1 / Woody / Native / Biotic / May
Rubus crataegifolius / RUCR / 11 / Woody / Native / Biotic / May - Jun
Rubus parvifolius / RUPA / 1 / Woody / Native / Biotic / May - Jun
Salix gracilistyla / SAGR / 1 / Woody / Native / Abiotic / Apr
Salix koreensis / SAKO / 3 / Woody / Native / Abiotic / Apr
Salix koriyanagi / SAKR / 2 / Woody / Native / Abiotic / Mar
Salix siuzevii / SASI / 2 / Woody / Native / Abiotic / May
Sanguisorba officinalis / SAOF / 2 / Herbaceous / Native / Abiotic / Jul - Sep
Scirpus radicans / SCRA / 1 / Herbaceous / Native / Abiotic
Securinega suffruticosa / SESU / 3 / Woody / Native / Abiotic / Jun - Jul
Setaria faberii / SEFA / 24 / Herbaceous / Native / Abiotic
Setaria glauca / SEGL / 1 / Herbaceous / Native / Abiotic
Setaria viridis / SEVI / 6 / Herbaceous / Native / Abiotic
Siegesbeckia glabrescens / SIGL / 3 / Herbaceous / Native / Biotic / Aug - Sep
Smilax sieboldii / SMSI / 1 / Woody / Native / Biotic
Solanum nigrum / SONI / 5 / Herbaceous / Native / Biotic
Sorbus alnifolia / SOAL / 1 / Woody / Native / Biotic / May - Jun
Spiraea prunifolia / SPPR / 1 / Woody / Native / Biotic / Apr - May
Spodiopogon sibiricus / SPSI / 4 / Herbaceous / Native / Abiotic
Stachys riederi / STRI / 1 / Herbaceous / Native / Biotic / Jun - Aug
Stellaria aquatica / STAQ / 9 / Herbaceous / Native / Abiotic / May - Jun
Stephanandra incisa / STIN / 3 / Woody / Native / Biotic / May - Jun
Taraxacum officinale / TAOF / 3 / Herbaceous / Introduced / Abiotic / Mar - Sep
Trifolium repens / TRRE / 5 / Herbaceous / Introduced / Abiotic / Jun - Jul
Vicia japonica / VIJA / 6 / Herbaceous / Native / Biotic / Jun - Aug
Vigna angularis / VIAN / 1 / Herbaceous / Native / Abiotic / Jul - Aug