Blar i ICES CM documents authored by IMR scientists (1949-2011) på forfatter "Stenseth, Nils Christian"
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A shift in a hake (Merluccius merluccius) population of the NW Mediterranean induced by a combined effect of climate and fishery harvesting
Hidalgo, Manuel; Rouyer, Tristan; Massutí, Enric; Moranta, Joan; Guijarro, Beatriz; Stenseth, Nils Christian (ICES CM documents;2009/F:04, Working paper, 2009)Climate and fisheries are often interacting with each other and producing complex synergic effects on the population dynamics of marine species. The drastic change in the climatic conditions in the North Atlantic (NA) ... -
Adaptive management of living marine resources by integrating different data sources and key ecological processes (ADMAR): A joint effort by IMR and CEES
Handegard, Nils Olav; Stenseth, Nils Christian; Dankel, Dorothy Jane; Durant, Joël M.; Eikeset, Anne Maria; Enberg, Katja; Hjermann, Dag Ø.; Huse, Geir; Pennington, Michael; Skern-Mauritzen, Mette; Stige, Leif Christian; Subbey, Samuel; Vølstad, Jon Helge (ICES CM documents;2010/R:26 Poster;, Working paper, 2010-09) -
Climatic effects filtered through the food web affect the dynamics of Arcto-Norwegian cod
Hjermann, Dag Ø.; Eikeset, Anne Maria; Bogstad, Bjarte; Ottersen, Geir; Stenseth, Nils Christian (ICES CM documents, Working paper, 2005)The world's largest cod stock, the Arcto-Norwegian cod (a.k.a. North-East Arctic cod), is heavily influenced by temperature in two ways: First, cod recruitment tends to be high when Barents Sea temperature in the spawning ... -
Cod in a changing climate Match-mismatch and Threshold for the North Sea cod recruitment
Durant, Joël M.; Hjermann, Dag Ø.; Stenseth, Nils Christian; Beaugrand, Grégory (ICES CM documents;2005 / AA:01, Working paper, 2005)Climatic changes are disrupting otherwise tight trophic interactions between predator and prey. Most of the earlier studies have primarily focused on the temporal dimension of the relationship in the framework of the ... -
Combining hydrographical particles-tracking models with spatial analyses to evaluate spatial dynamics of cod larvae and 0-group in the Barents Sea
Hidalgo, Manuel; Gusdal, Yvonne; Dingsør, Gjert Endre; Ciannelli, Lorenzo; Hjermann, Dag Ø.; Ottersen, Geir; Stige, Leif Christian; Fossum, Ingerid; Melsom, Arne; Stenseth, Nils Christian (ICES CM Documents;2009/C:06, Working paper, 2009)Recruitment ecology of cod has been an important focus within the framework of GLOBEC. A large part of this work focused on understanding the spatiotemporal component of cod populations. For the early pelagic life stages, ... -
Contemporary ocean warming and freshwater conditions contribute to delay the completion of maturation in Atlantic salmon
Otero, Jaime; Jensen, Arne J.; L’Abée-Lund, Jan Henning; Stenseth, Nils Christian; Storvik, Geir; Vøllestad, Leif Asbjørn (ICES CM documents;2010/S:13, Working paper, 2010)The completion of maturation in Atlantic salmon (Salmo salar) depends on environmental conditions that affect both feeding opportunities and growth, which would provide sufficient lipid stores for reproduction. However, ... -
Dramatic changes in spawning stock age-structure of Barents Sea cod
Ottersen, Geir; Hjermann, Dag Ø.; Stenseth, Nils Christian (ICES CM documents, Working paper, 2004)Atlantic Cod (Gadus morhua) is one of the commercially most important fish species in the North Atlantic and plays a central role in several ecosystems. Fishing pressure has been heavy over a prolonged period and the ... -
Ecological Forecasting under Climate Change – the case of Baltic cod
Lindegren, M.; Möllmann, Christian; Nielsen, Anders; Brander, Keith; MacKenzie, Brian; Stenseth, Nils Christian (ICES CM documents;2009/C:01, Working paper, 2009)Ecosystems worldwide have already shown clear evidence of change in response to global warming. Since ecosystems provide vital goods and services, our ability to anticipate future changes is of great concern. In order to ... -
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 ... -
Environmental effects on ocean entry of Atlantic salmon (Salmo salar) smolt across its range of distribution
Otero, Jaime; Antonsson, T.; Armstrong, J.; Arnason, F.; Arnekleiv, J.V.; Baglinière, J.-L.; Caballero, P.; Castro-Santos, T.; Dempson, J. Brian; Erkinaro, Jaakko; Gudjonsson, S.; Horton, G.; Hvidsten, N.A.; Jensen, Arne J.; Jokikokko, E.; Jonsson, I.R.; Kocik, J.F.; L’Abée-Lund, Jan Henning; Lamberg, A.; Letcher, B.H.; Niemelä, Eero; Romakkaniemi, A.; Russell, I.; Stenseth, Nils Christian; Storvik, Geir; Veselov, A.J.; Vøllestad, Leif Asbjørn (ICES CM documents;2010/S:26, Working paper, 2010) -
Factors affecting year-to-year and within river variability of one-sea-winter Atlantic salmon in Norwegian rivers
Otero, Jaime; Jensen, Arne J.; L’Abée-Lund, Jan Henning; Stenseth, Nils Christian; Storvik, Geir; Vøllestad, Leif Asbjørn (ICES CM documents;2009/E:14, Working paper, 2009)Many Atlantic salmon, Salmo salar, populations are decreasing throughout its distributional range due to several factors acting in concert. A number of studies have documented the influence of freshwater and ocean ... -
Inter-regional comparison of climate effects on marine fish populations facilitated through classification of mechanisms
Ottersen, Geir; Stenseth, Nils Christian (ICES CM documents;2007/D:17, Working paper, 2007)Variations in climate strongly affect the structure and function of marine ecosystems, but a number of different mechanisms are at play and their relative importance varies between regions and with time. There are obvious ... -
Landscape dynamics and predator-prey interactions in marine environments
Ciannelli, Lorenzo; Bailey, Kevin; Frank, Kenneth T.; Hjermann, Dag Ø.; Ottersen, Geir; Stenseth, Nils Christian (ICES CM documents, Working paper, 2004)In several sub-arctic marine ecosystems of the North Atlantic capelin are the primary prey item for cod, and the trophic interaction between capelin and cod is a central energetic pathway. However, in the North Pacific ... -
Long-term movement patterns of coastal cod (Gadus morhua)
Espeland, Sigurd Heiberg; Gjøsæter, Jakob; Stenseth, Nils Christian (ICES CM Documents;2001/L:18, Working paper, 2001)Movement patterns were studied by means of hydroacustic telemetry along the Norwegian Skagerrak coast. Ultrasonic transmitters was surgically implanted in 10 coastal cod, and released in the same area as they where caught. ... -
Reversing the Match-mismatch relationship: the prey point of view
Durant, Joël M.; Hjermann, Dag Ø.; Stenseth, Nils Christian (ICES CM documents;2009/ P:08, Working paper, 2009)Climate influences populations through a variety of processes. One mechanism that may be particularly important is the role of climate in disrupting un-equally the phenology of the predator and prey in a food chain. The ... -
Spatial patterns of age-0 cod survival in the Barents Sea
Ciannelli, Lorenzo; Dingsør, Gjert Endre; Bogstad, Bjarte; Ottersen, Geir; Chan, Kung-Sik; Gjøsæter, Harald; Stenseth, Nils Christian (ICES CM documents, Working paper, 2005)Apart from human harvest, recruitment dynamics is conceivably recognized as the main source of population variability of marine fish stocks. Factors affecting recruitment dynamics can change over both temporal and spatial ... -
Trophic interactions affecting a key ecosystem component: a multi-stage analysis of the recruitment of the Barents Sea capelin
Hjermann, Dag Ø.; Bogstad, Bjarte; Dingsør, Gjert Endre; Gjøsæter, Harald; Ottersen, Geir; Eikeset, Anne Maria; Stenseth, Nils Christian (ICES CM documents;2009/ C:07, Working paper, 2009)