Blar i Brage IMR på forfatter "Jørgensen, Christian"
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Body size adaptions under climate change: Zooplankton community more important than temperature or food abundance in model of a zooplanktivorous fish
Ljungström, Anna Jeja Gabriella; Claireaux, Marion; Fiksen, Øyvind; Jørgensen, Christian (Peer reviewed; Journal article, 2020)One of the most well-studied biogeographic patterns is increasing body size with latitude, and recent body size declines in marine and terrestrial organisms have received growing attention. Spatial and temporal variation ... -
Drift, growth, and survival of larval Northeast Arctic cod with simple rules of behaviour
Vikebø, Frode; Jørgensen, Christian; Kristiansen, Trond; Fiksen, Øyvind (Journal article; Peer reviewed, 2007-10-11)Due to vertical variations in ocean circulation, larval Northeast Arctic cod Gadus morhua may influence their own drift routes by migrating vertically. By coupling a larval individual-based model and a general circulation ... -
Evolution of growth in Gulf of St Lawrence cod?
Heino, Mikko; Baulier, Loïc; Boukal, David S.; Dunlop, Erin S.; Eliassen, Sigrunn; Enberg, Katja; Jørgensen, Christian; Varpe, Øystein (Journal article; Peer reviewed, 2008-06-22)Fishing is often size selective such that the likelihood of capture increases with body size. It has therefore been postulated that fishing could favour evolution of slower growth because smaller size would reduce exposure ... -
Evolutionary effects of fishing gear on foraging behavior and life-history traits
Claireaux, Marion; Jørgensen, Christian; Enberg, Katja (Journal article; Peer reviewed, 2018)Fishing gears are designed to exploit the natural behaviors of fish, and the concern that fishing may cause evolution of behavioral traits has been receiving increasing attention. The first intuitive expectation is that ... -
Implications of fisheries-induced evolution for stock rebuilding and recovery
Enberg, Katja; Jørgensen, Christian; Dunlop, Erin S.; Heino, Mikko; Dieckmann, Ulf (Journal article; Peer reviewed, 2009-07-31)Worldwide depletion of fish stocks has led fisheries managers to become increasingly concerned about rebuilding and recovery planning. To succeed, factors affecting recovery dynamics need to be understood, including the ... -
Implications of fisheries-induced evolution for stock rebuilding and recovery
Enberg, Katja; Jørgensen, Christian; Dunlop, Erin S.; Heino, Mikko; Dieckmann, Ulf (ICES CM documents;2010/M:29, Working paper, 2010)Fishing-induced evolution has the potential to change life-history and other characters of exploited stocks. Here we study the rebuilding and recovery of an exploited stock with en individual-based eco-genetic model ... -
Large annual variation in the amount of skipped spawning for female Northeast Arctic haddock Melanogrammus aeglefinus
Skjæraasen, Jon Egil; Korsbrekke, Knut; Dingsør, Gjert Endre; Langangen, Øystein; Opdal, Anders Frugård; Jørgensen, Christian (Peer reviewed; Journal article, 2020)Although the phenomenon of skipped spawning has been described in numerous fishes, time-series are scarce. We used the presence of post-ovulatory follicles in histological gonad slides from females not developing oocytes ... -
Large annual variation in the amount of skipped spawning for female Northeast Arctic haddock Melanogrammus aeglefinus
Skjæraasen, Jon Egil; Korsbrekke, Knut; Dingsør, Gjert Endre; Langangen, Øystein; Opdal, Anders Frugård; Jørgensen, Christian (Peer reviewed; Journal article, 2020)Although the phenomenon of skipped spawning has been described in numerous fishes, time-series are scarce. We used the presence of post-ovulatory follicles in histological gonad slides from females not developing oocytes ... -
Life-history implications of the allometric scaling of growth
Boukal, David S.; Dieckmann, Ulf; Enberg, Katja; Heino, Mikko; Jørgensen, Christian (Journal article; Peer reviewed, 2014-05-27)Several phenomenological descriptions, such as the von Bertalanffy growth model, have been widely used to describe size-at-age and individual growth across a diverse range of organisms. However, for modelling life histories, ... -
Linking behavioural ecology and oceanography: larval behaviour determines growth, mortality and dispersal
Fiksen, Øyvind; Jørgensen, Christian; Kristiansen, Trond; Vikebø, Frode; Huse, Geir (Journal article; Peer reviewed, 2007-10-11)Highly resolved general circulation models (GCMs) now generate realistic flow fields, and have revealed how sensitive larval drift routes are to vertical positioning in the water column. Sensible representation of behavioural ... -
Modelling and interpreting fish bioenergetics – a role for behaviour, life-history traits, and survival trade-offs
Jørgensen, Christian; Enberg, Katja; Mangel, Marc (Journal article; Peer reviewed, 2016-01-14)Bioenergetics is used as the mechanistic foundation of many models of fishes. As the context of a model gradually extends beyond pure bioenergetics to include behaviour, life-history traits and function and performance of ... -
Modelling rule-based behaviour: habitat selection and the growth–survival trade-off in larval cod
Kristiansen, Trond; Jørgensen, Christian; Lough, R. G.; Vikebø, Frode; Fiksen, Øyvind (ICES CM documents;2009/T:03, Working paper, 2009) -
The bioeconomic consequences of fisheries ]induced adaptive changes
Zimmermann, Fabian; Jørgensen, Christian; Steinshamn, Stein Ivar; Heino, Mikko (ICES CM documents;2010/M:02, Working paper, 2010) -
Trade-offs between growth and reproduction in wild Atlantic cod
Folkvord, Arild; Jørgensen, Christian; Korsbrekke, Knut; Nash, Richard D.M.; Nilsen, Trygve; Skjæraasen, Jon Egil (Journal article; Peer reviewed, 2014-04-08)Animals partition and trade off their resources between competing needs such as growth, maintenance, and reproduction. Over a lifetime, allocation strategies should result in distinct trajectories for growth, survival, and ...