Soil Disturbance as a Grassland Restoration Measure—Effects on Plant Species Composition and Plant Functional Traits Schnoor, Tim ; Bruun, Hans Henrik ; Olsson, Pål Axel Abstract Publication: PLoS ONE Pub Date: April 2015 DOI: 10.1371/journal.pone.0123698 Bibcode: 2015PLoSO..1023698S