• Aktiv forvaltning av marine ressurser - Frøya og Hitra - Arbeidsrapport 2017-2018 

      Kleiven, Alf Ring; Espeland, Sigurd Heiberg; Albretsen, Jon; Halvorsen, Kim Aleksander Tallaksen; Søvik, Guldborg; Grefsrud, Ellen Sofie; Ottesen, Dag (Rapport fra havforskningen;2019 - 14, Research report, 2019)
      Prosjektet ‘Aktiv forvaltning av marine ressurser- Frøya og Hitra’ ble formelt startet opp høsten 2017. Den overordnete målsetting med prosjektet er å etablere en solid kunnskapsplattform for å sikre de marine verdiene og ...
    • Aktiv forvaltning av marine ressurser – lokalt tilpasset forvaltning 

      Espeland, Sigurd Heiberg; Kleiven, Alf Ring; Moland, Even; Knutsen, Jan Atle (Rapport fra Havforskningen;Nr. 34-2014, Working paper, 2014-12)
    • Aktiv forvaltning av marine ressurser – lokalt tilpasset forvaltning. Årsrapport 2013 

      Espeland, Sigurd Heiberg; Kleiven, Alf Ring; Bodvin, Torjan (Rapport fra Havforskningen;Nr. 35-2013, Working paper, 2013-12)
    • Aktiv forvaltning av marine ressurser – lokalt tilpasset forvaltning. Årsrapport 2015 

      Espeland, Sigurd Heiberg; Kleiven, Alf Ring; Moland, Even; Knutsen, Jan Atle (Rapport fra Havforskningen;21-2015, Working paper, 2015)
    • Aktiv forvaltning av marine ressurser – lokalt tilpasset forvaltning: LINDESNES - Effekter på hummer i Klippeskjær bevaringsområde 

      Espeland, Sigurd Heiberg; Kleiven, Alf Ring; Sannæs, Hanne; Kleiven, Portia Joy Nillos (Rapport fra havforskningen;2019 - 12, Research report, 2019)
      Havforskningsinstituttet har siden 2011 gjennomført prøvefiske etter hummer i Klippeskjær bevaringsområde for å undersøke effekter av hummerfredningen som ble innført i 2013. I perioden frem til 2015 har fangsten av hummer ...
    • Aktiv forvaltning av marine verdier i kystsonen 

      Bodvin, Torjan; Kleiven, Alf Ring; Espeland, Sigurd Heiberg; Steen, Henning; Moy, Frithjof E. (Årsrapport;2012, Research report, 2012-12-14)
      The report gives an overview of activities, methods and preliminary results for the two municipalities involved, Tvedestrand and Lindesnes. The Ministry for Fisheries and Coastal affairs proclaimed 20.06.2012 the establishment ...
    • Aktiv forvaltning av marine verdier i kystsonen 

      Bodvin, Torjan; Olsen, Torstein; Espeland, Sigurd Heiberg; Kleiven, Alf Ring (Research report, 2010-12)
    • Biometric Fish Classification of Temperate Species Using Convolutional Neural Network with Squeeze-and-Excitation 

      Olsvik, Erlend; Trinh, Christian M. D.; Knausgård, Kristian Muri; Wiklund, Arne; Sørdalen, Tonje Knutsen; Kleiven, Alf Ring; Lei, Jiao; Goodwin, Morten (Peer reviewed; Journal article, 2019)
    • Catch-and-release of Atlantic cod (Gadus morhua): post-release behaviour of acoustically pretagged fish in a natural marine environment 

      Ferter, Keno; Hartmann, Klaas; Kleiven, Alf Ring; Moland, Even; Olsen, Esben Moland (Journal article; Peer reviewed, 2014-10-07)
      Studying the sublethal effects of catch-and-release (C&R) is challenging, as there are several potential sources of bias. For example, if behavioural alterations immediately after the release event are to be studied, ...
    • Evaluering av effekten av forvaltningstiltak på hummer og forslag til tiltak 

      Kleiven, Alf Ring; Moland, Even; Sørdalen, Tonje Knutsen; Espeland, Sigurd Heiberg; van der Meeren, Gro Ingleid (Rapport fra havforskningen;Nr. 15 - 2017, Research report, 2017)
    • Fishing pressure impacts the abundance gradient of European lobsters across the borders of a newly established marine protected area 

      Kleiven, Portia Joy Nillos; Espeland, Sigurd Heiberg; Olsen, Esben Moland; Abesamis, Rene A.; Moland, Even; Kleiven, Alf Ring (Journal article; Peer reviewed, 2019)
      Marine protected areas (MPAs) are considered viable fisheries management tools due to their potential benefits of adult spillover and recruitment subsidy to nearby fisheries. However, before–after control–impact studies ...
    • Harvest pressure on coastal atlantic cod (Gadus morhua) from recreational fishing relative to commercial fishing assessed from tag-recovery data 

      Kleiven, Alf Ring; Chacon, Albert Fernandez; Nordahl, Jan-Harald; Moland, Even; Espeland, Sigurd Heiberg; Knutsen, Halvor; Olsen, Esben Moland (Journal article; Peer reviewed, 2016-03-09)
      Marine recreational fishing is a popular outdoor activity. However, knowledge about the magnitude of recreational catches relative to commercial catches in coastal fisheries is generally sparse. Coastal Atlantic cod (Gadus ...
    • Havets skumleste 

      Bergstad, Odd-Aksel; Albert, Ole Thomas; Jelmert, Anders; Bjelland, Otte; Kleiven, Alf Ring; Espeland, Sigurd Heiberg; Moland, Even (Others, 2015-06)
    • Hummerfisket 2017 og 2018: Innsats og fangst 

      Kleiven, Alf Ring; Lyle, Jeremy; Ferter, Keno; Espeland, Sigurd Heiberg; Kleiven, Portia Joy Nillos; Christensen, Lene; Vølstad, Jon Helge (Rapport fra havforskningen;2019 - 39, Research report, 2019)
      I 2017 ble det innført obligatorisk påmelding til hummerfisket for både fritidsfiskere og yrkesfiskere. Dette har lagt grunnlaget for muligheten til å beregne total innsats og fangst av hummer i Norge. Etter hummersesongen ...
    • Marine naturforhold og naturverdier i Færder nasjonalpark 

      Dahl, Einar; Knutsen, Jan Atle; Albretsen, Jon; Espeland, Sigurd Heiberg; Huserbråten, Mats Brockstedt Olsen; Knutsen, Halvor; Jelmert, Anders; Kleiven, Alf Ring; Moland, Even; Moy, Frithjof; Naustvoll, Lars-Johan; Olsen, Esben Moland; Thorbjørnsen, Susanna Huneide (Rapport fra Havforskningen;Nr. 3 - 2015, Working paper, 2015-02)
    • Oppdatert kunnskapsstatus om kystnær torsk i Sør Norge 

      Aglen, Asgeir; Nedreaas, Kjell; Moland, Even; Knutsen, Halvor; Kleiven, Alf Ring; Johannessen, Tore; Wehde, Henning; Jørgensen, Terje; Espeland, Sigurd Heiberg; Olsen, Esben Moland; Knutsen, Jan Atle (Fisken og Havet;4-2016, Research report, 2016-05)
      English: In a report from 2008 an assessment of coastal cod in southern Norway, from the Swedish border to Stad, was presented, together with suggestions to management initiatives. This report shortly summarize the ...
    • Recreational sea fishing in Europe in a global context—Participation rates, fishing effort, expenditure, and implications for monitoring and assessment 

      Kieran, Hyder; Weltersbach, Marc Simon; Armstrong, Mark; Ferter, Keno; Townhill, Bryony; Ahvonen, Anssi; Arlinghaus, Robert; Baikov, Andrei; Bellanger, Manuel; Birzaks, Janis; Borch, Trude Kristin; Cambie, Giulia; de Graaf, Martin; Diogo, Hugo M C; Dziemian, Lukasz; Gordoa, Ana; Grzebielec, Ryszard; Hartill, Bruce; Kagervall, Anders; Kapiris, Kostas; Karlsson, Martin; Kleiven, Alf Ring; Lejk, Adam M; Levrel, Harold; Lovell, Sabrina; Lyle, Jeremy; Miolanen, Pentti; Monkman, Graham; Morales-Nin, Beatriz; Mugerza, Estanis; Martinez, Roi; O'Reilly, Paul F; Olesen, Hans Jakob; Papadopoulos, Anastasios; Pita, Pablo; Radford, Zachary; Radtke, Krzysztof; Roche, William; Rocklin, Delphine; Ruiz, Jon; Scougal, Callum; Silvestri, Roberto; Skov, Christian; Steinback, Scott; Sundeløf, Andreas; Svagzdys, Arvydas; Turnbull, David; van der Hammen, Tessa; van Voorhees, David; van Winsen, Frankwin; Verleye, Thomas J; Veiga, Pedro; Vølstad, Jon Helge; Zarauz, Lucia; Zolubas, Tomas; Strehlow, Harry Vincent (Journal article; Peer reviewed, 2017)
      Marine recreational fishing (MRF) is a high-participation activity with large economic value and social benefits globally, and it impacts on some fish stocks. Although reporting MRF catches is a European Union legislative ...
    • Total Catch of a Red-Listed Marine Species Is an Order of Magnitude Higher than Official Data 

      Kleiven, Alf Ring; Olsen, Esben Moland; Vølstad, Jon Helge (Journal article; Peer reviewed, 2012-02-17)
      Accurate information on total catch and effort is essential for successful fisheries management. Officially reported landings, however, may be underestimates of total catch in many fisheries. We investigated the fishery ...