| influences of elevated ozone and carbon dioxide in growth responses of lowland hay meadow mesocosms. | we studied the effects of relatively low levels of o(3) (40-50 ppb) and co(2)-enrichment (+100 ppm) on a northern european lowland hay meadow during the summers 2002-2004 using open-top chambers (otcs) and ground-planted mesocosms. ozone reduced the aboveground biomass of the community (up to 40%), and four out of seven species (campanula rotundifolia, fragaria vesca, trifolium medium, vicia cracca) showed either significant growth reduction and/or visible injuries under elevated o(3). however, ... | 2006 | 16513235 |