• 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 ...
    • Anthropogenic and natural size-related selection act in concert during brown trout (Salmo trutta) smolt river descent 

      Haraldstad, Tormod; Höglund, Erik; Kroglund, Frode; Olsen, Esben Moland; Hawley, Kate Louise; Haugen, Thrond Oddvar (Peer reviewed; Journal article, 2020)
      By hindering migration and inducing direct turbine mortality during downstream migration, hydropower is regarded as one of the most serious threats to anadromous salmonids. Yet, little attention has been paid to long-term ...
    • 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 ...
    • Assessing changes in age and size at maturation in collapsing populations of Atlantic cod (Gadus morhua) 

      Olsen, Esben Moland; Lilly, George R.; Heino, Mikko; Morgan, M. Joanne; Brattey, John; Dieckmann, Ulf (Journal article; Peer reviewed, 2005)
      By estimating probabilistic reaction norms for age and size at maturation, we show that maturation schedules of Atlantic cod (Gadus morhua) off Labrador and Newfoundland shifted toward earlier ages and smaller sizes ...
    • 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)
    • 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)
    • 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, ...
    • 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 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 ...
    • Diel vertical migration patterns in juvenile cod from the Skagerrak coast 

      Espeland, Sigurd Heiberg; Thoresen, Adine Guldborg; Olsen, Esben Moland; Stige, Leif Christian; Knutsen, Halvor; Gjøsæter, Jakob; Stenseth, Nils Christian (Journal article; Peer reviewed, 2010-04-29)
      We demonstrated a clear year-round diel vertical migration pattern (DVM) of small (26 to 45 cm) Skagerrak coastal cod Gadus morhua on a small geographic scale. Generalized additive models (GAMs) were used to make inferences ...
    • Disentangling conditional effects of multiple regime shifts on Atlantic cod productivity 

      Perälä, Tommi; Olsen, Esben Moland; Hutchings, Jeffrey (Peer reviewed; Journal article, 2020)
      Regime shifts are increasingly prevalent in the ecological literature. However, definitions vary and detection methods are still developing. Here, we employ a novel statistical algorithm based on the Bayesian online ...
    • Disentangling structural genomic and behavioral barriers in a sea of connectivity 

      Barth, Julia Maria Isis; Villegas-Ríos, David; Freitas, Carla; Moland, Even; Star, Bastiaan; André, Carl; Knutsen, Halvor; Bradbury, Ian; Dierking, Jan; Petereit, Christoph; Righton, David; Metcalfe, Julian; Jakobsen, Kjetill Sigurd; Olsen, Esben Moland; Jentoft, Sissel (Journal article; Peer reviewed, 2019)
      Genetic divergence among populations arises through natural selection or drift and is counteracted by connectivity and gene flow. In sympatric populations, isolating mechanisms are thus needed to limit the homogenizing ...
    • Disparate movement behavior and feeding ecology in sympatric ecotypes of Atlantic cod 

      Kristensen, Martin Lykke; Olsen, Esben Moland; Moland, Even; Knutsen, Halvor; Grønkjær, Peter; Koed, Anders; Källo, Kristi; Aarestrup, Kim (Peer reviewed; Journal article, 2021)
      Coexistence of ecotypes, genetically divergent population units, is a widespread phenomenon, potentially affecting ecosystem functioning and local food web stability. In coastal Skagerrak, Atlantic cod (Gadus morhua) occur ...
    • Distribution of herring (Clupea harengus) and zooplankton in the Norwegian Sea, as determined from generalised additive models 

      Olsen, Esben Moland; Melle, Webjørn; Kaartvedt, Stein; Holst, Jens Christian; Mork, Kjell Arne (ICES CM documents, Working paper, 2005)
      We analyse the variability in the distribution and feeding of the Norwegian spring-spawning herring in the period from 1995 to 2004, using survey data collected throughout the Norwegian Sea each year in May - June. The ...
    • Effects of Fishing Tourism in a Coastal Municipality: a Case Study from Risør, Norway 

      Moksness, Erlend; Gjøsæter, Jakob; Lagaillarde, Guillaume; Mikkelsen, Eirik; Olsen, Esben Moland; Sandersen, Håkan T.; Vølstad, Jon Helge (Journal article; Peer reviewed, 2011)
      Recreational fishing has become an important part of the Norwegian tourist industry. The coastal municipality of Risør, southern Norway, is considering further development of its marine fishing tourism to increase local ...
    • Effects of Fishing Tourism in a Coastal Municipality: a Case Study from Risør, Norway 

      Moksness, Erlend; Gjøsæter, Jakob; Lagaillarde, Guillaume; Mikkelsen, Eirik; Olsen, Esben Moland; Sandersen, Håkan T.; Vølstad, Jon Helge (Journal article; Peer reviewed, 2011)
      Recreational fishing has become an important part of the Norwegian tourist industry. The coastal municipality of Risør, southern Norway, is considering further development of its marine fishing tourism to increase local ...
    • Egg distribution, bottom topography and small-scale cod population structure in a coastal marine system 

      Knutsen, Halvor; Olsen, Esben Moland; Ciannelli, Lorenzo; Espeland, Sigurd Heiberg; Knutsen, Jan Atle; Simonsen, Jan Henrik; Skreslet, Stig; Stenseth, Nils Christian (Journal article; Peer reviewed, 2007-03-12)
      Coastal marine species with pelagic egg and larval stages, such as the Atlantic cod Gadus morhua, can be structured into genetically distinct local populations on a surprisingly small geographic scale considering their ...
    • Eight decades of adaptive changes in herring reproductive investment: the joint effect of environment and exploitation 

      Claireaux, Marion; dos Santos Schmidt, Thassya Christina; Olsen, Esben Moland; Slotte, Aril; Varpe, Øystein; Heino, Mikko Petteri; Enberg, Katja (Peer reviewed; Journal article, 2020)
      Reproductive investment is a central trait for population dynamics and productivity. Fishing and environmental variations are major drivers affecting population structure, dynamics, and adaptation of life-history and ...