MSc in Fishery and Aquaculture Science Andreas Langdal at the Norwegian College of Fishery Science (NFH) will Thursday 18 December 2025 hold his trial lecture and defend his thesis for the PhD degree in Natural Science.
Trial lecture on assigned topic will take place at 10.15: "Carbon release and uptake in mussel aquaculture- are farmed mussels a net sink or source of greenhouse gas emissions?"
Later, at 12.15 he will defend his thesis entitled: "Environmental Footprint of Low-Trophic Marine Resources in Food and Feed Production through Life Cycle Assessments"
Professor and head at the Norwegian College of Fishery Science Petter Holm will lead the disputation.
Popular Science Summary
The global food system faces urgent challenges, including the need for sustainable and nutritious food alternatives with minimal environmental impact. This thesis explores the potential of low-trophic marine resources to contribute to a more sustainable food system by assessing blue mussels, orange-footed sea cucumbers, and the existing literature. Using life cycle assessments (LCA) and chemical analyses, the research evaluates the benefits and challenges associated with their environmental footprints and nutrient content. Findings reveal that while low-trophic species can provide essential nutrients, their environmental impact is highly dependent on factors like production methods and edible ratios. This work highlights the importance of understanding the functionality of food options and their role in the food system, to ensure their environmental footprints correlates with their societal benefits.
Evaluation Committee
Supervisors
Streaming
Both the trial lecture and defense and will be streamed and recorded:
Thesis
The thesis will be available in Vitenarkivet in a few days.