Browsing AURA by Author "Knutsen, Jan Atle"
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Ghost fishing in Raet National Park: estimating the impact on Atlantic cod and three species of wrasse
Numme, Sunniva Sandbu (Master thesis, 2022)Loss of fishing gear have been a problem for as long as fishing has occurred in the ocean. As modern fishing gear are made up of mostly synthetic materials, it will stay intact and continue to fish for a long time after ... -
Impacts of ghost fishing on European lobster (Homarus gammarus) and brown crab (Cancer pagurus) in Raet national park, Norway
Loga, Sunniva Rosfjord (Master thesis, 2022)Lost fishing gear pose a threat to marine life in large parts of the world. Fishing gear have the potential to continue to fish for a long time after it has been lost, referred to as “ghost fishing”, an issue which has ... -
Lobster and cod benefit from small-scale northern marine protected areas : inference from an empirical before - after control-impact study
Moland, Even; Olsen, Esben Moland; Knutsen, Halvor; Garrigou, Pauline; Espeland, Sigurd Heiberg; Kleiven, Alf Ring; André, Carl; Knutsen, Jan Atle (Journal article; Peer reviewed, 2013)Marine protected areas (MPAs) are increasingly implemented as tools to conserve and manage fisheries and target species. Because there are opportunity costs to conservation, there is a need for science-based assessment of ... -
Lobster reserves as a management tool in coastal waters: Two decades of experience in Norway
Knutsen, Jan Atle; Kleiven, Alf Ring; Olsen, Esben Moland; Knutsen, Halvor; Espeland, Sigurd Heiberg; Sørdalen, Tonje Knutsen; Thorbjørnsen, Susanna Huneide; Hutchings, Jeffrey; Chacon, Albert Fernandez; Huserbråten, Mats Brockstedt Olsen; Villegas-Ríos, David; Halvorsen, Kim Aleksander Tallaksen; Kleiven, Portia Joy Nillos; Langeland, Thomas Kiland; Moland, Even (Peer reviewed; Journal article, 2021)The positive effects of reduced fishing pressure in marine protected areas (MPAs) are now well documented globally. Yet, evidence of MPA benefits from long-term replicated before-after control-impact (BACI) studies and ... -
Mulighetskartlegging for kystbaserte næringer i Agder
Frigstad, Helene; Dahl, Einar; Moy, Frithjof Emil; Næs, Kristoffer; Knutsen, Jan Atle; Kaste, Øyvind (NIVA-rapport;, Research report, 2017)I Agder er det et sterkt ønske fra kystkommunene om å tilrettelegge for blå vekst i regionen, men for å realisere dette målet er det behov for faktisk kunnskap om hvilke muligheter havet gir – og utelukker – langs hele ... -
Replicated marine protected areas (MPAs) support movement of larger, but not more, European lobsters to neighbouring fished areas
Thorbjørnsen, Susanna Huneide; Moland, Even; Huserbråten, Mats Brockstedt Olsen; Knutsen, Jan Atle; Knutsen, Halvor; Olsen, Esben Moland (Journal article; Peer reviewed, 2018) -
Restoration of Abundance and Dynamics of Coastal Fish and Lobster Within Northern Marine Protected Areas Across Two Decades
Moland, Even; Fernández-Chacón, Albert; Sørdalen, Tonje Knutsen; Villegas-Rios, David; Thorbjørnsen, Susanna Huneide; Halvorsen, Kim Aleksander Tallaksen; Huserbråten, Mats Brockstedt Olsen; Olsen, Esben Moland; Kleiven, Portia Joy Nillos; Kleiven, Alf Ring; Knutsen, Halvor; Espeland, Sigurd Heiberg; Freitas, Carla; Knutsen, Jan Atle (Peer reviewed; Journal article, 2021) -
The life-saving effect of biodegradable cotton thread in lost fishing traps: from a cleanup-project in Raet National Park, Norway
Kerlefsen, Kristine Valen (Master thesis, 2022)The fishing gear used today is primarily made of synthetic materials, which gives the gear a long breakdown time. This means that Abandoned, Lost, and Discarded Fishing Gear (ALDFG) can continue fishing for a long time in ...