Effect of elevated CO2 on the dynamics of particle-attached and free-living bacterioplankton communities in an Arctic fjord. - Sperling, M.; Piontek, J.; Gerdts, G.; Wichels, A.; Schunck, H.; Roy, A.-S.; La Roche, J.; Gilbert, J.; Nissimov, J. I.; Bittner, L.; Romac, S.; Riebesell, U.; et al. (Biogeosciences, 2013)