Proposed Ph.D. project: Determination of the water column and sediment nitrogen removal pathways in the Baltic Sea have been published on the website: https://www.mssd.us.edu.pl/en/admission/ Ph.D. projects financed from research grants We kindly ask you to read our offer and invite you to apply to the International Environmental Doctoral School. Registration of candidates in the OAS system is available till June 11, 2023.