1. Lore Graulus, the study programme bachelor of Biomedical Laboratory Technology at Hogeschool Gent, University of Applied Sciences and Arts (Gent, Belgium); supervisors: dr. Zrinka Dragun and dr. Leen Puimège; direct supervisor dr. Zoran Kiralj; title: Bioaccumulation of rare earth elements in freshwater amphipods (Gammarus fossarum complex) as indicator of diffuse metal pollution of the Mura River (Croatia); date of defense: 8^th June 2026.