Blar i Brage IMR på forfatter "Langangen, Øystein Ole Gahr"
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A standard protocol for describing the evaluation of ecological models
Planque, Benjamin; Aarflot, Johanna Myrseth; Buttay, Lucie; Carroll, JoLynn; Fransner, Sara Filippa Krusmynta; Hansen, Cecilie; Husson, Berengere; Langangen, Øystein Ole Gahr; Lindstrøm, Ulf Ove; Pedersen, Torstein; Primicerio, Raul; Sivel, Elliot Manuarii; Skogen, Morten D.; Strombom, Evelyn; Stige, Leif Christian; Varpe, Øystein; Yoccoz, Nigel (Peer reviewed; Journal article, 2022)Numerical models o ecological systems are increasingly used to address complex environmental and resource management questions. One challenge or scientists, managers, and stakeholders is to appraise how well suited these ... -
Assessing the patchiness of early life stage of a fish stock (Gadus morhua) and its contribution to the stock recruitment
Dupont, Nicolas; Vikebø, Frode Bendiksen; Langangen, Øystein Ole Gahr (Peer reviewed; Journal article, 2022)Patchiness, defined as spatial heterogeneity in distribution of organisms, is a common phenomenon in zooplankton including ichtyoplankton. In heterogeneous landscapes, depending on the scale of prey and predatory distributions, ... -
Assessing the patchiness of early life stage of a fish stock (Gadus morhua) and its contribution to the stock recruitment
Dupont, Nicolas; Vikebø, Frode Bendiksen; Langangen, Øystein Ole Gahr (Peer reviewed; Journal article, 2022)Patchiness, defined as spatial heterogeneity in distribution of organisms, is a common phenomenon in zooplankton including ichtyoplankton. In heterogeneous landscapes, depending on the scale of prey and predatory distributions, ... -
Attraction of cod Gadus morhua from coastal spawning grounds to salmon farms
Skjæraasen, Jon Egil; Karlsen, Ørjan; Langangen, Øystein Ole Gahr; Meier, Sonnich; Dunlop, Katherine Mary; van der Meeren, Terje; Keeley, Nigel B.; Myksvoll, Mari Skuggedal; Dahle, Geir; Moland, Even; Nilsen, Rune; Elvik, Kristine Marit Schrøder; Bannister, Raymond; Olsen, Esben Moland (Peer reviewed; Journal article, 2022)Wild fish aggregate at aquaculture net-pens, but the underlying mechanisms are not fully understood. This study examined how salmon farms attract coastal Atlantic cod Gadus morhua from their inshore spawning grounds. ... -
Attraction of cod Gadus morhua from coastal spawning grounds to salmon farms
Skjæraasen, Jon Egil; Karlsen, Ørjan; Langangen, Øystein Ole Gahr; Meier, Sonnich; Dunlop, Katherine Mary; van der Meeren, Terje; Keeley, Nigel B.; Myksvoll, Mari Skuggedal; Dahle, Geir; Moland, Even; Nilsen, Rune; Elvik, Kristine Marit Schrøder; Bannister, Raymond; Olsen, Esben Moland (Peer reviewed; Journal article, 2022)Wild fish aggregate at aquaculture net-pens, but the underlying mechanisms are not fully understood. This study examined how salmon farms attract coastal Atlantic cod Gadus morhua from their inshore spawning grounds. ... -
Effects of early life mass mortality events on fish populations
Langangen, Øystein Ole Gahr; Ohlberger, Jan Philipp; Stige, Leif Christian; Patin, Rémi; Buttay, Lucie; Stenseth, Nils Christian; Ono, Kotaro; Durant, Joël (Peer reviewed; Journal article, 2022)Mass mortality events are ubiquitous in nature and can be caused by, for example, diseases, extreme weather and human perturbations such as contamination. Despite being prevalent and rising globally, how mass mortality in ... -
Effects of early life mass mortality events on fish populations
Langangen, Øystein Ole Gahr; Ohlberger, Jan Philipp; Stige, Leif Christian; Patin, Rémi; Buttay, Lucie; Stenseth, Nils Christian; Ono, Kotaro; Durant, Joël (Peer reviewed; Journal article, 2022)Mass mortality events are ubiquitous in nature and can be caused by, for example, diseases, extreme weather and human perturbations such as contamination. Despite being prevalent and rising globally, how mass mortality in ... -
Empirical evidence of nonlinearity in bottom up effect in a marine predator-prey system
Durant, Joël; Ono, Kotaro; Langangen, Øystein Ole Gahr (Peer reviewed; Journal article, 2022)Strength of species interaction may have profound effects on population dynamics. Empirical estimates of interaction strength is often based on the assumption that the interaction strengths are constant. Barents Sea cod ... -
Exploring the role of Northeast Atlantic cod in the Barents Sea food web using a multi-model approach
Nilsen, Ina; Hansen, Cecilie; Kaplan, Isaac; Holmes, Elizabeth; Langangen, Øystein Ole Gahr (Peer reviewed; Journal article, 2022)It is commonly accepted that no ecosystem model is the ‘best’, but rather that ecosystem models should be used in ensembles. This is also the case for the Barents Sea ecosystem, where we have used two different ecosystem ... -
Exploring the role of Northeast Atlantic cod in the Barents Sea food web using a multi-model approach
Nilsen, Ina; Hansen, Cecilie; Kaplan, Isaac; Holmes, Elizabeth; Langangen, Øystein Ole Gahr (Peer reviewed; Journal article, 2022)It is commonly accepted that no ecosystem model is the ‘best’, but rather that ecosystem models should be used in ensembles. This is also the case for the Barents Sea ecosystem, where we have used two different ecosystem ... -
Management strategies can buffer the effect of mass mortality in early life stages of fish
Buttay, Lucie; Ohlberger, Jan Philipp; Langangen, Øystein Ole Gahr (Peer reviewed; Journal article, 2023)Mass mortality (MM) events affecting early life stages of fish can have strong and long-term consequences for population abundance and demography as well as the economic activity supported by exploited stocks. Adaptive ... -
Management strategies can buffer the effect of mass mortality in early life stages of fish
Buttay, Lucie; Ohlberger, Jan Philipp; Langangen, Øystein Ole Gahr (Peer reviewed; Journal article, 2023)1. Mass mortality (MM) events affecting early life stages of fish can have strong and long-term consequences for population abundance and demography as well as the economic activity supported by exploited stocks. Adaptive ... -
Northeast Arctic Cod and Prey Match-Mismatch in a High-Latitude Spring-Bloom System
Vikebø, Frode Bendiksen; Broch, Ole Jacob; Kajiya Endo, Clarissa Akemi; Frøysa, Håvard G; Carroll, JoLynn; Juselius, Jonas; Langangen, Øystein Ole Gahr (Peer reviewed; Journal article, 2021)By combining an ocean model, a nutrient-phytoplankton-zooplankton-detritus-model and an individual-based model for early life stages of Northeast Arctic cod we systematically investigate food limitations and growth performance ... -
Northeast Arctic Cod and Prey Match-Mismatch in a High-Latitude Spring-Bloom System
Vikebø, Frode Bendiksen; Broch, Ole Jacob; Kajiya Endo, Clarissa Akemi; Frøysa, Håvard G; Carroll, JoLynn; Juselius, Jonas; Langangen, Øystein Ole Gahr (Peer reviewed; Journal article, 2021)By combining an ocean model, a nutrient-phytoplankton-zooplankton-detritus-model and an individual-based model for early life stages of Northeast Arctic cod we systematically investigate food limitations and growth performance ... -
A standard protocol for describing the evaluation of ecological models
Planque, Benjamin; Aarflot, Johanna Myrseth; Buttay, Lucie; Carroll, JoLynn; Fransner, Sara Filippa Krusmynta; Hansen, Cecilie; Husson, Berengere; Langangen, Øystein Ole Gahr; Lindstrøm, Ulf Ove; Pedersen, Torstein; Primicerio, Raul; Sivel, Elliot Manuarii; Skogen, Morten D.; Strombom, Evelyn; Stige, Leif Christian; Varpe, Øystein; Yoccoz, Nigel (Peer reviewed; Journal article, 2022)Numerical models of ecological systems are increasingly used to address complex environmental and resource management questions. One challenge for scientists, managers, and stakeholders is to appraise how well suited these ...