CORU Postdoctoral fellow Gabriel Reygondeau recently had the study “Biogeochemical regions of the Mediterranean Sea: an objective multidimensional and multivariate environmental approach” published in Progress in Oceanography. In the paper, a biogeochemical/ecological spatial framework was defined for ecosystems of the Mediterranean Sea. The authors show that the vertical dimension is crucial in such analysis since surface ecosystems cannot be extended to the bottom, as most studies assume, as the surface is driven by different environmental variables. This highlights the need for conservation management that accounts for the differences in zoning with depth at a regional scale.