Long-term feeding ecology of harbour seals: Implication for sustainable ecosystembased management

Title: Long-term feeding ecology of harbour seals: Implication for sustainable ecosystembased management

Description: The harbour seals in Skagerrak have recovered from low levels in the 1970s, leading to increased conflicts with the fishing industry. A lack of knowledge about seal diets and their impact on fish stocks complicates balanced ecosystem management. This project will analyse over 2,000 diet samples collected over two decades to map seal dietary preferences, their geographical and temporal variations, and differences based on sex and age. Combining this data with fish stock assessments, it will be investigated whether seals are selective or opportunistic feeders.

Advanced models will quantify the impact of seal predation on fish stocksand compare this to other mortality factors, such as fishing. The study aims to provide critical insights into the interactions between seals and fish, facilitating the development of scientifically grounded and adaptive management strategies. The knowledge could help reduce conflicts between stakeholders, ensure viable seal populations, and promote sustainable coexistence between fishing and seal conservation.