Grasses are thereby the dominant organisms in grasslands due to their tolerance to mowing and grazing, fast spread and responses to environmental changes^5,8. Forbs instead are less affected by changes in nutrient conditions than grasses due to their ability to store nutrients in their roots⁸. (https://www.nature.com/articles/s41598-019-54309-5)

Grasses with rhizomes are capable of thickening up a stand. Grasses without rhizomes are known as bunch grasses. (https://ag.umass.edu/crops-dairy-livestock-equine/fact-sheets/perennial-legumes-grasses)