This thesis documents the significance of the Dagaa fishing for the population in Kigoma District on Lake Tanganyika.

Trends towards a more participatory agenda in policy-relevant science imply that the roles and work tasks of scientists become more multifaceted. In Europe, the increased use of multiannual plans creates a need for fishery scientists to contribute with their expertise in a wide variety of situations. We identify and characterize four roles for scientists as <i>developers</i>, <i>reviewers</i>, ...

The Ecosystem Approach in Fisheries (the EAF) became a worldwide trend. More and more countries are adopting and developing this trend with different rate of success. There is a widespread agreement about the necessity of a new fisheries management strategy, which is taking into account food web linkages and human activity, which may affect sustainability of ecosystem. However FAO’s framework ...

Bærekraftig utvikling for norsk oppdrettsnæring er nødvendig for å løse dagens og fremtidens utfordringer, for eksempel, miljøvennlighet, rømning og fiskehelse. Den globale befolkingsveksten og deres konsumvaner gir indikasjoner på at verdens matproduksjon må økes. Oppdrettsnæringen kan være med på imøtekomme fremtidens matetterspørsel. For å kunne oppnå dette må det jobbes for en bærekraftig utvikling ...

The world’s interest in the Arctic region has been rising as well as the awareness of climate change and disappearance of ice cover in the region. From being seen as a ‘frozen desert’ the Arctic region is nowadays perceived, as a place for cooperation among Arctic states and other actors, from non-Arctic states to non-governmental organizations, like WWF and Greenpeace. The governance system in the ...

This thesis aims to investigate ways to improve the size selective performances of the fishing gear that is currently employed in the fishery for Red King Crab, Paralithodes camtschaticus, in Northern Norway. High bycatch rates of undersized crabs are a source of concern since these individuals have to be sorted out and dicarded into the sea, a procedure that increases the risk for injuries and ...

Biogeographical patterns have an ecological basis, but few empirical studies possess the necessary scale and resolution relevant for investigation. The Barents Sea shelf provides an ideal study area, as it is a transition area between Atlantic and Arctic regions, and is sampled by a comprehensive survey of all major functional groups. We studied spatial variation in species composition of demersal ...

One of the main aims in fisheries management is to obtain sustainable fisheries and reduce the waste and losses. Many fish species lives together in many fishing grounds. Fisheries of target species will thus include other species as bycatch. This thesis analyses potential market oriented solutions to solve the problem through by processing products valuable in the market for those species until now ...

The study contains operational and economic information regarding the SPF in Benguela and Namibe fishing towns, for 2014. The 28 distinct purse-seiners represent 48% of the fleet population and contribute with about 54% of landings. Most vessels vary with respect to physical and operational characteristics, how these variations may have affected the vessels performance and productivity is the subject ...