Blar i Brage IMR på forfatter "Olsen, Esben Moland"
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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 ... -
Eco-evolutionary dynamics of Atlantic cod spatial behavior maintained after the implementation of a marine reserve
Villegas-Ríos, David; Freitas, Carla; Moland, Even; Olsen, Esben Moland (Peer reviewed; Journal article, 2022)The effects of marine reserves on the life history and demography of the protected populations are well-established, typically increasing population density and body size. However, little is known about how marine reserves ... -
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 ... -
Enhancing stock-recruitment models for North Sea cod by including climate and zooplankton
Ottersen, Geir; Olsen, Esben Moland; Stenseth, Nils Christian (ICES CM documents;2009/C:08, Working paper, 2009)The “recruitment problem” - trying to understand what regulates recruitment variability in marine fish populations - has been the number one issue in fisheries science since the early twentieth century. Intuitively, the ... -
Fine-Scale Population Differences in Atlantic Cod Reproductive Success: A Potential Mechanism for Ecological Speciation in a Marine Fish
Roney, Nancy; Oomen, Rebekah Alice; Knutsen, Halvor; Olsen, Esben Moland; Hutchings, Jeffrey (Journal article; Peer reviewed, 2018)Successful resource‐management and conservation outcomes ideally depend on matching the spatial scales of population demography, local adaptation, and threat mitigation. For marine fish with high dispersal capabilities, ... -
Fine-scale population dynamics in a marine fish species inferred from dynamic state-space models
Rogers, Lauren; Storvik, Geir Olve; Knutsen, Halvor; Olsen, Esben Moland; Stenseth, Nils Christian (Peer reviewed; Journal article, 2017) -
Fish community dynamics in a coastal no-take marine protected area compared to a harvested area before and after protection from fishing
Varnes, Bjørg Karin; Olsen, Esben Moland (Peer reviewed; Journal article, 2023)An ecosystem's ability to maintain key functions during environmental change is largely determined by its biodiversity. We compared fish species composition, richness, diversity, catch per unit effort (CPUE), and fish size ... -
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 ... -
Habitat associations of juvenile Atlantic cod (Gadus morhua L.) and sympatric demersal fish communities within shallow inshore nursery grounds
Dunlop, Katherine Mary; Staby, Arved; van der Meeren, Terje; Keeley, Nigel B.; Olsen, Esben Moland; Bannister, Raymond; Skjæraasen, Jon Egil (Peer reviewed; Journal article, 2022)Resolving the relationship between demersal fish and sublittoral biotic habitats and substrates is a key element in the protection of important nursery grounds for strengthening fish recruitment. In Norway, coastal Atlantic ... -
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 ... -
Harvest selection on Atlantic cod behavioral traits: implications for spatial management
Olsen, Esben Moland; Heupel, Michelle R.; Simpfendorfer, Colin A.; Moland, Even (Peer reviewed; Journal article, 2012) -
Harvest selection on multiple traits in the wild revealed by aquatic animal telemetry
Moland, Even; Carlson, Stephanie; Villegas-Rios, David; Wiig, Jørgen Ree; Olsen, Esben Moland (Journal article; Peer reviewed, 2019)Harvesting can have profound impacts on the ecology and evolution of marine populations. However, little is known about the strength and direction of fisheries‐induced selection acting on multiple traits in the wild. Here, ... -
Harvesting changes mating behaviour in European lobster
Sørdalen, Tonje Knutsen; Halvorsen, Kim Aleksander Tallaksen; Harrison, Hugo B.; Ellis, Charlie D.; Vøllestad, Leif Asbjørn; Knutsen, Halvor; Moland, Even; Olsen, Esben Moland (Journal article; Peer reviewed, 2018)Removing individuals from a wild population can affect the availability of prospective mates and the outcome of competitive interactions, with subsequent effects on mating patterns and sexual selection. Consequently, the ... -
Integral functions of marine vertebrates in the ocean carbon cycle and climate change mitigation
Martin, Angela Helen; Pearson, Heidi; Saba, Grace; Olsen, Esben Moland (Peer reviewed; Journal article, 2021)In the last decade, the ocean has absorbed a quarter of the Earth’s greenhouse gas emissions through the carbon (C) cycle, a naturally occurring process. Aspects of the ocean C cycle are now being incorporated into climate ... -
"Islands of divergence" in the Atlantic cod genome represent polymorphic chromosomal rearrangements
Sodeland, Marte; Jorde, Per Erik; Lien, Sigbjørn; Jentoft, Sissel; Berg, Paul Ragnar; Grove, Harald; Kent, Matthew Peter; Arnyasi, Mariann; Olsen, Esben Moland; Knutsen, Halvor (Peer reviewed; Journal article, 2016)