• Activity patterns of wild European lobster Homarus gammarus in coastal marine reserves: implications for future reserve design 

      Moland, Even; Olsen, Esben Moland; Knutsen, Halvor; Knutsen, Jan Atle; Enersen, Svein Erik; André, Carl; Stenseth, Nils Christian (Journal article; Peer reviewed, 2011-05-16)
      European lobster Homarus gammarus in Norway has been in decline over the last 30 to 40 yr, and the species is currently red listed according to International Union for Conservation of Nature criteria. In 2006, experimental ...
    • Adaptation to Low Salinity Promotes Genomic Divergence in Atlantic Cod (Gadus morhua L.) 

      Berg, Paul Ragnar; Jentoft, Sissel; Star, Bastiaan; Ring, Kristoffer Hofaker; Knutsen, Halvor; Lien, Sigbjørn; Jakobsen, Kjetill Sigurd; Andre, Carl (Journal article; Peer reviewed, 2015-05-20)
      How genomic selection enables species to adapt to divergent environments is a fundamental question in ecology and evolution. We investigated the genomic signatures of local adaptation in Atlantic cod (Gadus morhua L.) along ...
    • Ancient DNA reveals the Arctic origin of Viking Age cod from Haithabu, Germany 

      Star, Bastiaan; Boessenkool, Sanne; Gondek, Agata Teresa; Nikulina, Elena A.; Hufthammer, Anne Karin; Pampoulie, Christophe; Knutsen, Halvor; André, Carl; Nistelberger, Heidi Maria; Dierking, Jan; Petereit, Christoph; Heinrich, Dirk; Jakobsen, Kjetill Sigurd; Stenseth, Nils Christian; Jentoft, Sissel; Barrett, James H. (Journal article; Peer reviewed, 2017)
      Knowledge of the range and chronology of historic trade and long-distance transport of natural resources is essential for determining the impacts of past human activities on marine environments. However, the specific ...
    • Are low but statistically significant levels of genetic differentiation in marine fishes ‘biologically meaningful’? A case study of coastal Atlantic cod 

      Knutsen, Halvor; Olsen, Esben Moland; Jorde, Per Erik; Espeland, Sigurd Heiberg; André, Carl (Journal article; Peer reviewed, 2010-12-29)
      A key question in many genetic studies on marine organisms is how to interpret a low but statistically significant level of genetic differentiation. Do such observations reflect a real phenomenon, or are they caused by ...
    • Are low but statistically significant levels of genetic differentiation in marine fishes ‘biologically meaningful’? A case study of coastal Atlantic cod 

      Knutsen, Halvor; Olsen, Esben Moland; Jorde, Per Erik; Espeland, Sigurd Heiberg; André, Carl (Journal article; Peer reviewed, 2010-12-29)
      A key question in many genetic studies on marine organisms is how to interpret a low but statistically significant level of genetic differentiation. Do such observations reflect a real phenomenon, or are they caused by ...
    • Behavioral responses of Atlantic cod to sea temperature changes 

      Freitas, Carla; Olsen, Esben Moland; Moland, Even; Ciannelli, Lorenzo; Knutsen, Halvor (Journal article; Peer reviewed, 2015-04-17)
    • Biologiske verdier i sjø i Tvedestrand kommune 

      Knutsen, Jan Atle; Knutsen, Halvor; Paulsen, Øystein; Kristensen, Øystein; Vike, Svein (Fisken og havet;7-2003, Research report, 2003)
      Norsk: I løpet av de siste 30 år har det foregått en utstrakt kartlegging og verdifastsetting av naturområder på land i Norge. Ute i sjøen derimot, mangler det tilsvarende stedsspesifikk kunnskap om hvor de biologiske ...
    • BioTIME: A database of biodiversity time series for the Anthropocene 

      Dornelas, Maria; Antao, Laura H.; Moyes, Faye; Bates, Amanda E.; Magurran, Anne E.; Adam, Dusan; Akhmetzhanova, Asem A.; Appeltans, Ward; Arcos, Jose Manuel; Arnold, Haley; Ayyappan, Narayanan; Badihi, Gal; Baird, Andres H.; Barbosa, Miguel; Barreto, Tiago Egydio; Bässler, Claus; Bellgrove, Alecia; Belmaker, Jonathan; Benedetti-Cecchi, Lisandro; Bett, Brian J.; Bjorkman, Anne D.; Błazewicz, Magdalena; Blowes, Shane A.; Bloch, Christopher P.; Bonebrake, Timothy C.; Boyd, Susan; Bradford, Matt; Brooks, Andrew J.; Brown, James H.; Bruelheide, Helge; Budy, Phaedra; Carvalho, Fernando; Castaneda-Moya, Edward; Chen, Chaolun Allen; Chamblee, John F.; Chase, Tory J.; Collier, Laura Siegwart; Cooper, Elisabeth J.; Cornelissen, J. Hans C.; Cotano, Unai; Crow, Shannan Kyle; Damasceno, Gabriella; Davies, Claire H.; Davis, Robert A.; Day, Frank P.; Degraer, Steven; Doherty, Tim S.; Dunn, Timothy E.; Durigan, Giselda; Hofgaard, Annika; Johannessen, Tore; Klanderud, Kari; Knutsen, Halvor; Olsen, Esben Moland (Peer reviewed; Journal article, 2018)
    • Can we rely on selected genetic markers for population identification? Evidence from coastal Atlantic cod 

      Jorde, Per Erik; Synnes, Ann-Elin; Espeland, Sigurd Heiberg; Sodeland, Marte; Knutsen, Halvor (Journal article; Peer reviewed, 2018)
      The use of genetic markers under putative selection in population studies carries the potential for erroneous identification of populations and misassignment of individuals to population of origin. Selected markers are ...
    • “A cleaner break”: Genetic divergence between geographic groups and sympatric phenotypes revealed in ballan wrasse (Labrus bergylta) 

      Seljestad, Gaute; Sanchez, Maria Quintela; Faust, Ellika; Halvorsen, Kim Aleksander Tallaksen; Besnier, Francois; Jansson, Eeva; Dahle, Geir; Knutsen, Halvor; André, Carl; Folkvord, Arild; Glover, Kevin (Peer reviewed; Journal article, 2020)
      Capture and long‐distance translocation of cleaner fish to control lice infestations on marine salmonid farms has the potential to influence wild populations via overexploitation in source regions, and introgression in ...
    • Cleaner fish escape salmon farms and hybridize with local wrasse populations 

      Faust, Ellika; Halvorsen, Kim Aleksander Tallaksen; Andersen, Per; Knutsen, Halvor; André, Carl (Journal article; Peer reviewed, 2018)
      The genetic impact of farmed fish escaping aquaculture is a highly debated issue. However, non-target species, such as cleaner fish used to remove sea lice from farmed fish, are rarely considered. Here, we report that wild ...
    • Climate Change and Genetic Structure of Leading Edge and Rear End Populations in a Northwards Shifting Marine Fish Species, the Corkwing Wrasse (Symphodus melops) 

      Knutsen, Halvor; Jorde, Per Erik; Gonzalez, Enrique Blanco; Robalo, Joana; Albretsen, Jon; Almada, Vitor (Journal article; Peer reviewed, 2013-06-26)
      One mechanism by which marine organisms may respond to climate shifts is range shifts. The corkwing wrasse (Symphodus melops) is a temperate fish species, inhabiting the coasts of Europe, that show strong indications of ...
    • Climate Change and Genetic Structure of Leading Edge and Rear End Populations in a Northwards Shifting Marine Fish Species, the Corkwing Wrasse (Symphodus melops) 

      Knutsen, Halvor; Jorde, Per Erik; Blanco Gonzalez, Enrique; Robalo, Joana I.; Albretsen, Jon; Almada, Vitor C. (Peer reviewed; Journal article, 2013)
      One mechanism by which marine organisms may respond to climate shifts is range shifts. The corkwing wrasse (Symphodus melops) is a temperate fish species, inhabiting the coasts of Europe, that show strong indications of ...
    • Combining population genomics with demographic analyses highlights habitat patchiness and larval dispersal as determinants of connectivity in coastal fish species 

      Knutsen, Halvor; de Oliveira Catarino, Diana Sofia; Rogers, Lauren; Sodeland, Marte; Mattingsdal, Morten; jahnke, marlene; Hutchings, Jeffrey; Mellerud, Ida Kristin; Espeland, Sigurd Heiberg; Johanneson, Kerstin; Roth, Olivia; Hansen, Michael Møller; Jentoft, Sissel; Andre, Carl; Jorde, Per Erik (Peer reviewed; Journal article, 2022)
      Gene flow shapes spatial genetic structure and the potential for local adaptation. Among marine animals with nonmigratory adults, the presence or absence of a pelagic larval stage is thought to be a key determinant in ...
    • Conservation, Spillover and Gene Flow within a Network of Northern European Marine Protected Areas 

      Huserbråten, Mats Brockstedt Olsen; Moland, Even; Knutsen, Halvor; Olsen, Esben Moland; André, Carl; Stenseth, Nils Chr. (Journal article; Peer reviewed, 2013-09-06)
      To ensure that marine protected areas (MPAs) benefit conservation and fisheries, the effectiveness of MPA designs has to be evaluated in field studies. Using an interdisciplinary approach, we empirically assessed the design ...
    • Conservation, Spillover and Gene Flow within a Network of Northern European Marine Protected Areas 

      Huserbråten, Mats Brockstedt Olsen; Moland, Even; Knutsen, Halvor; Olsen, Esben Moland; André, Carl; Stenseth, Nils Christian (Peer reviewed; Journal article, 2013)
      To ensure that marine protected areas (MPAs) benefit conservation and fisheries, the effectiveness of MPA designs has to be evaluated in field studies. Using an interdisciplinary approach, we empirically assessed the design ...
    • Demographic history has shaped the strongly differentiated corkwing wrasse populations in Northern Europe. 

      Mattingsdal, Morten; Jorde, Per Erik; Knutsen, Halvor; Jentoft, Sissel; Stenseth, Nils Christian; Sodeland, Marte; Robalo, Joana I.; Hansen, Michael M.; André, Carl; Gonzalez, Enrique Blanco (Journal article; Peer reviewed, 2019)
      Understanding the biological processes involved in genetic differentiation and divergence between populations within species is a pivotal aim in evolutionary biology. One particular phenomenon that requires clarification ...
    • Demographic responses to protection from harvesting in a long-lived marine species 

      Fernández-Chacón, Albert; Buttay, Lucie; Moland, Even; Knutsen, Halvor; Olsen, Esben Moland (Peer reviewed; Journal article, 2021)
      Marine protected areas (MPAs) are usually considered to have positive effects on the recovery of over-exploited populations. However, resolving the extent to which MPAs function according to their conservation goals requires ...
    • Development of eleven microsatellite loci in the deep-sea black scabbardfish (Aphanopus carbo) 

      Knutsen, Halvor; Catarino, Diana; Sannæs, Hanne; Stefanni, Sergio (Journal article; Peer reviewed, 2009-06)
      We developed 11 microsatellite loci primers in the bathypelagic black scabbardfish (Aphanopus carbo), a novelty for deep-sea fishes. All markers were obtained from partial genomic DNA libraries enriched for tetranucleotide ...
    • Development of ten microsatellite loci in the marine fish ling (Molva molva) 

      Ring, Anne-Karin; Knutsen, Halvor; Fiani, David; Hoelzel, Rus; André, Carl (Journal article; Peer reviewed, 2009-09)
      We developed primers for two dinucleotide and eight tetranucleotide microsatellite loci in a marine fish, the ling (Molva molva). All markers were obtained from partial genomic DNA libraries and characterized in 55 unrelated ...