Fig. 2

Abundance of Ambrosia trifida based on biomass and plant cover in late October. Values are means ± SE. In the cut treatment, all plants were subjected to cutting in early May. In density 1, all plants were cut and seeds of six species were sown at 300 viable seeds per plot. In addition, density 2 included 600 viable seeds, density 3 included 1200 viable seeds, density 4 included 2400 viable seeds, and density 5 included 4800 viable seeds of six species per plot