Add to ORKGSpatial and temporal variations of hydrophysical properties (temperature, salinity, density), eutrophication-related parameters (nutrients, Chl-a, dissolved oxygen) and particulate organic matter (POM) concentrations and composition (C/N/P) in water column and surface sediments were examined at 33 stations between April 2014 and February 2015 in Mersin Bay located at northeastern (NE) Mediterranean. Regional and seasonal distributions of nutrients in the Mersin Bay are affected by human-induced pressures. Higher concentrations in polluted coastal waters enhanced biomass (in terms of Chl-a) and POM concentrations in both spring and winter. Particulate organic carbon (POC) concentrations exceeded 100 μM in the eutrophic coastal surface water...