Disturbances, such as fire and herbivore grazing, are essential to reduce biomass and maintain grassland biodiversity but actively managing these disturbances is difficult and expensive, especially in urban areas. A new paper explains how mowing can be used to manage grassland biodiversity:

Smith AL, Barrett RL, Milner RNC (2018). Annual mowing maintains plant diversity in threatened temperate grasslands. Applied Vegetation Science, DOI: 10.1111/avsc.12365.

Check out the 3-minute video explaining the research: https://youtu.be/cjKavzj-Cj4