Halvtidsseminarium: "Microbial communities in recirculating aquaculture systems in relation to water quality and fish performance, growth, health and welfare"

Fokus för Thanhs doktorandprojekt är bakteriers betydelse för vattenrening i fiskodlingar och hur fiskarna påverkas,  se mer nedan. Opponent vid halvtidsseminariet är Oskar Modin, från institutionen för Arkitektur och samhällsbyggnadsteknik vid Chalmers tekniska högskola.

Thanhs huvudhandledare är Ingela Dahllöf med Kristina Snuttan Sundell som biträdande handledare och examinator är Joachim Sturve, samtliga BioEnv.

Kort sammanfattning (på engelska)

Recirculating aquaculture systems (RAS) represent a promising approach to sustainable salmon production; however, their stability largely depends on the performance of biofilters. This study investigates microbial communities in brackish water RAS for Atlantic salmon (Salmo salar) grow-out production and their roles in maintaining water quality, particularly through microbial processes driving the nitrogen cycle, as well as their relevance to fish performance. Distinct microbial compositions were observed between RAS systems and compartments, reflecting differences in system function. Fish quality was also evaluated through purging experiments comparing conventional and electrolysis-based RAS, which showed only minor differences in off-flavor removal. Together, these studies provide a broader understanding of how microbial processes and system configurations influence water quality, fish performance, and the sustainability of RAS production.