10.18453/rosdok_id00003726 Barz, Fanny Fanny Barz http://d-nb.info/gnd/1199121398 https://orcid.org/0000-0002-1700-7343 Universität Rostock 2021 300 Social sciences 2021 en http://purl.uni-rostock.de/rosdok/id00003726 urn:nbn:de:gbv:28-rosdok_id00003726-6 Bycatch of marine mammals and seabirds in gillnet fisheries is a hazard for conservation globally. This dissertation considered the case of the German gillnet fleet in the Baltic Sea to generate an understanding of fishers ́ social practices to inform bycatch mitigation management. As a result of qualitative methods, I identified 3 types of fishers´ agency and 2 forms of bycatch practices, differing between normalizing seabird bycatch and non-normalizing bycatch of marine mammals. I discussed the results in light of fisheries management and derived recommendations for management measures.<fre>