Blar i Brage IMR på forfatter "Olsen, Esben Moland"
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Overwintering behaviour of yellow-stage European eel (Anguilla anguilla) in a natural marine fjord system
Rohtla, Mehis; Moland, Even; Skiftesvik, Anne Berit; Thorstad, Eva Bonsak; Bosgraaf, Sebastian; Olsen, Esben Moland; Browman, Howard; Durif, Caroline (Peer reviewed; Journal article, 2022)Like many animals, northern temperate eel can enter a hibernation-like state and become dormant during the winter. Knowledge of overwintering behaviour in eel is sparse and mainly based on anecdotal observations and a few ... -
Personalities influence spatial responses to environmental fluctuations in wild fish
Villegas-Rios, David; Réale, Denis; Freitas, Carla; Moland, Even; Olsen, Esben Moland (Journal article; Peer reviewed, 2018)Although growing evidence supports the idea that animal personality can explain plasticity in response to changes in the social environment, it remains to be tested whether it can explain spatial responses of individuals ... -
Personalities influence spatial responses to environmental fluctuations in wild fish
Villegas-Rios, David; Réale, Denis; Freitas, Carla; Moland, Even; Olsen, Esben Moland (Peer reviewed; Journal article, 2018) -
Possible adverse impact of contaminants on Atlantic cod population dynamics in coastal ecosystems
Ono, Kotaro; Knutsen, Halvor; Olsen, Esben Moland; Ruus, Anders; Hjermann, Dag Øystein; Stenseth, Nils Christian (Journal article; Peer reviewed, 2019)While many in-laboratory ecotoxicological studies have shown the adverse impact of pollutants to the fitness of an individual, direct evidence from the field on the population dynamics of wildlife animals has been lacking. ... -
Potential for managing life history diversity in a commercially exploited intermediate predator, the goldsinny wrasse (Ctenolabrus rupestris)
Olsen, Esben Moland; Halvorsen, Kim Aleksander Tallaksen; Larsen, Torkel; Kuparinen, Anna (Peer reviewed; Journal article, 2019) -
Potential of a no‐take marine reserve to protect home ranges of anadromous brown trout (Salmo trutta)
Thorbjørnsen, Susanna Huneide; Moland, Even; Simpfendorfer, Colin A.; Heupel, Michelle R.; Knutsen, Halvor; Olsen, Esben Moland (Journal article; Peer reviewed, 2018)The extent to which no‐take marine reserves can benefit anadromous species requires examination. Here, we used acoustic telemetry to investigate the spatial behavior of anadromous brown trout (sea trout, Salmo trutta) in ... -
Probabilistic maturation reaction norms assessed from mark- recaptures of wild fish in their natural habitat
Olsen, Esben Moland; Serbezov, Dimitar; Vollestad, Leif A. (Journal article; Peer reviewed, 2014-04-01)Reaction norms are a valuable tool in evolutionary biology. Lately, the probabilistic maturation reaction norm approach, describing probabilities of maturing at combinations of age and body size, has been much applied for ... -
Probabilistic maturation reaction norms assessed from mark-recaptures of wild fish in their natural habitat
Olsen, Esben Moland; Serbezov, Dimitar; Vøllestad, Leif Asbjørn (Peer reviewed; Journal article, 2014) -
Protected areas buffer against harvest selection and rebuild phenotypic complexity
Fernández-Chacón, Albert; Villegas-Ríos, David; Moland, Even; Baskett, Marissa L.; Olsen, Esben Moland; Carlson, Stephanie M. (Peer reviewed; Journal article, 2020)Harvest mortality typically truncates the harvested species' size structure, thereby reducing phenotypic complexity, which can lead to reduced population productivity, increased population variability, and selection on an ... -
Protection from fishing improves body growth of an exploited species
Sørdalen, Tonje Knutsen; Halvorsen, Kim Aleksander Tallaksen; Olsen, Esben Moland (Peer reviewed; Journal article, 2022)Hunting and fishing are often size-selective, which favours slow body growth. In addition, fast growth rate has been shown to be positively correlated with behavioural traits that increase encounter rates and catchability ... -
Protection from fishing improves body growth of an exploited species
Sørdalen, Tonje Knutsen; Halvorsen, Kim Aleksander Tallaksen; Olsen, Esben Moland (Peer reviewed; Journal article, 2022)Hunting and fishing are often size-selective, which favours slow body growth. In addition, fast growth rate has been shown to be positively correlated with behavioural traits that increase encounter rates and catchability ... -
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)The European lobster Homarus gammarus is heavily exploited in the Norwegian fishery, and several management actions have been implemented to protect the species. Three marine protected areas (MPAs) excluding all but hook ... -
Restaurering av utvalgte sjøaurevassdrag i Aust-Agder: forundersøkelse og plan for gjennomføring
Olsen, Esben Moland; Simonsen, Jan Henrik; Knutsen, Jan Atle (Fisken og havet, Research report, 2002)Small coastal strearns are important spawning and nursery areas for seatrout (Salmo trutta). However, in many areas, stream habitat quality has been severely reduced by human activities. We suggest how to restore the ... -
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)This article reviews a suite of studies conducted in a network of coastal Marine Protected Areas (MPAs) in Skagerrak, Southeast Norway. In 2006, Norway’s first lobster reserves were implemented, with the aim of protecting ... -
Sea temperature effects on depth use and habitat selection in a marine fish community
Freitas, Carla; Villegas-Ríos, David; Moland, Even; Olsen, Esben Moland (Peer reviewed; Journal article, 2021)Understanding the responses of aquatic animals to temperature variability is essential to predict impacts of future climate change and to inform conservation and management. Most ectotherms such as fish are expected to ... -
Seasonal Dynamics of Atlantic Herring (Clupea harengus L.) Populations Spawning in the Vicinity of Marginal Habitats
Eggers, Florian; Slotte, Aril; Libungan, Lisa Anne; Johannessen, Arne; Kvamme, Cecilie; Moland, Even; Olsen, Esben Moland; Nash, Richard D.M. (Journal article; Peer reviewed, 2014-11-05)Gillnet sampling and analyses of otolith shape, vertebral count and growth indicated the presence of three putative Atlantic herring (Clupea harengus L.) populations mixing together over the spawning season February–June ... -
Selection on fish personality differs between a no-take marine reserve and fished areas
Thorbjørnsen, Susanna Huneide; Moland, Even; Villegas-Ríos, David; Bleeker, Katinka; Knutsen, Halvor; Olsen, Esben Moland (Peer reviewed; Journal article, 2021)Marine reserves can protect fish populations by increasing abundance and body size, but less is known about the effect of protection on fish behaviour. We looked for individual consistency in movement behaviours of sea ... -
Small-scale genetic structure in a marine population in relation to water circulation and egg characteristics
Ciannelli, Lorenzo; Knutsen, Halvor; Olsen, Esben Moland; Espeland, Sigurd Heiberg; Asplin, Lars; Jelmert, Anders; Knutsen, Jan Atle; Stenseth, Nils Christian (Journal article; Peer reviewed, 2010-10)Until the last decade it was assumed that most marine species have pronounced gene flow over vast areas, largely because of their potential for dispersal during early life stages. However, recent genetic, modeling, and ... -
Spatially structured interactions between lobsters and lobster fishers in a coastal habitat: fine-scale behaviour and survival estimated from acoustic telemetry
Wiig, Jørgen Ree; Moland, Even; Haugen, Thrond O.; Olsen, Esben Moland (Journal article; Peer reviewed, 2013-07-18)Fishing can have profound impacts on the ecology and evolution of marine populations. Understanding population-level changes ultimately depends on knowledge about individual survival and how it varies in time and space. ... -
Spawning Atlantic cod (Gadus morhua L.) exposed to noise from seismic airguns do not abandon their spawning site
McQueen, Kate; Meager, Justin James; Nyqvist, Daniel; Skjæraasen, Jon Egil; Olsen, Esben Moland; Karlsen, Ørjan; Kvadsheim, Petter Helgevold; Handegard, Nils Olav; Sivle, Lise Doksæter; Forland, Tonje Nesse (Peer reviewed; Journal article, 2022)Seismic airgun surveys may disturb and displace fish at large ranges. If such displacement causes fish to abandon spawning grounds, reproductive success could be impacted. To investigate whether airgun sound causes cod ...