Holocentric plants are more competitive under higher UV‐B doses.

Clastogens, Cyperaceae, Paleozoic terrestrialisation, Poaceae, ultraviolet radiation, holocentric chromosomes, vegetation plots Keywords: clastogens; Cyperaceae; holocentric chromosomes; Paleozoic terrestrialisation; Poaceae; ultraviolet radiation; vegetation plots EN clastogens Cyperaceae holocentric chromosomes Paleozoic terrestrialisation Poaceae ultraviolet radiation vegetation plots 15 21 7 12/06/21 20220101 NES 220101 Acknowledgements We are indebted to Alois Schmalwieser who kindly provided the UV-B data from Verdebout (2004a). Assigning a UV-B dose to each vegetation plot UV-B doses were taken from the dataset of satellite-derived UV radiation climatology over Europe that was prepared to support UV-impact studies (Verdebout, 2004a,b). Therefore, to assess the effect of UV-B on the relative competitiveness of holocentric cyperids and monocentric grasses, we analysed the change in their relative cover in 291 883 vegetation plots across a fine-grained UV-B gradient spanning all of Europe (Fig. [Extracted from the article]