Blar i Brage IMR på forfatter "Freitas, Carla"
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Atlantic cod individual spatial behaviour and stable isotope associations in a no-take marine reserve
Monk, Christopher; Power, Michael; Freitas, Carla; Harrison, Philip M.; Heupel, Michelle; Kuparinen, Anna; Moland, Even; Simpfendorfer, Colin; Villegas-Ríos, David; Olsen, Esben Moland (Peer reviewed; Journal article, 2023)Foraging is a behavioural process and, therefore, individual behaviour and diet are theorized to covary. However, few comparisons of individual behaviour type and diet exist in the wild. We tested whether behaviour type ... -
Behavioral responses of Atlantic cod to sea temperature changes
Freitas, Carla; Olsen, Esben Moland; Moland, Even; Ciannelli, Lorenzo; Knutsen, Halvor (Journal article; Peer reviewed, 2015-04-17) -
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 ... -
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 ... -
Ecosystem-level effects of large-scale disturbance in kelp forests
Norderhaug, KM; Filbee-Dexter, K; Freitas, Carla; Birkely, Sten Richard; Christensen, Lene; Mellerud, Ida Kristin; Thormar, Jonas; van Son, Thijs Christiaan; Moy, Frithjof Emil; Vázquez Alonso, M.; Steen, Henning (Peer reviewed; Journal article, 2020) -
First insights into the movements and vertical habitat use of blue marlin (Makaira nigricans) in the eastern North Atlantic
Freitas, Carla; Freitas, Mafalda; Andrzejaczek, Samantha; Dale, Jonathan J.; Whippen, Wayne; Block, Barbara A. (Peer reviewed; Journal article, 2022)The blue marlin (Makaira nigricans) is a vulnerable migratory fish inhabiting tropical and subtropical pelagic waters of the Atlantic, Pacific and Indian Oceans. The biology and spatial ecology of the species in the eastern ... -
Impacts of salmon lice on mortality, marine migration distance and premature return in sea trout
Serra Llinares, Rosa Maria; Bøhn, Thomas; Karlsen, Ørjan; Nilsen, Rune; Freitas, Carla; Albretsen, Jon; Haraldstad, Tormod; Thorstad, Eva Bonsak; Elvik, Kristine Marit Schrøder; Bjørn, Pål Arne (Peer reviewed; Journal article, 2020)Brown trout Salmo trutta (L.) is a facultative anadromous species, where a portion of individuals in populations with access to the sea perform migrations to use the richer feeding resources. We investigated the effect of ... -
Importance of fast ice and glacier fronts for female polar bears and their cubs during spring in Svalbard, Norway
Freitas, Carla; Kovacs, Kit M.; Andersen, Magnus; Aars, Jon; Sandven, Stein; Skern-Mauritzen, Mette; Pavlova, Olga; Lydersen, Christian (Journal article; Peer reviewed, 2012-02-13)Arctic sea ice is declining rapidly, making it vital to understand the importance of different types of sea ice for ice-dependent species such as polar bears Ursus maritimus. In this study we used GPS telemetry (25 polar ... -
Inferring individual fate from aquatic acoustic telemetry data
Villegas-Ríos, David; Freitas, Carla; Moland, Even; Thorbjørnsen, Susanna Huneide; Olsen, Esben M. (Peer reviewed; Journal article, 2020)Acoustic telemetry has become a popular means of obtaining individual behavioural data from a wide array of species in marine and freshwater systems. Fate information is crucial to understand important aspects of population ... -
Krafttak for kysttorsken - Kunnskap for stedstilpasset gjenoppbygging av bestander, naturtyper og økosystem i Færder- og Ytre Hvaler nasjonalparker
Moland, Even; Synnes, Ann-Elin; Naustvoll, Lars Johan; Freitas, Carla; Norderhaug, Kjell Magnus; Thormar, Jonas; Biuw, Martin; Jorde, Per Erik; Knutsen, Halvor; Dahle, Geir; Jelmert, Anders; Bosgraaf, Sebastian; Olsen, Esben Moland; Deininger, Anne; Haga, Atle (Rapport fra havforskningen;2021 - 2, Research report, 2021)Ytre Oslofjord har en unik kystnatur av svært stor verdi for både fastboende og tilreisende. Færder- og Ytre Hvaler nasjonalparker ligger side om side ytterst i fjorden, og skal sikre naturverdiene for kommende generasjoner. ... -
Nutrient concentrations in minke whale faeces and the potential impact on dissolved nutrient pools off Svalbard, Norway
Freitas, Carla; Gundersen, Kjell; Lindblom, Lotta; Biuw, Martin; Haug, Tore (Peer reviewed; Journal article, 2023)There is increasing interest in assessing the impact of whales on nutrient and carbon cycling in the ocean. By fertilising surface waters with nutrient-rich faeces, whales may stimulate primary production and thus carbon ... -
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) -
Pilotprosjekt for vurdering av samlet påvirkning i Oslofjorden – ytre del
Aarflot, Johanna Myrseth; Naustvoll, Lars Johan; Moy, Frithjof Emil; Norderhaug, Kjell Magnus; Berg, Florian; Kvamme, Cecilie; Søvik, Guldborg; Kleiven, Alf Ring; Albretsen, Jon; Freitas, Carla; Thorbjørnsen, Susanna Huneide; Falkenhaug, Tone (Rapport fra havforskningen;2024 - 15, Research report, 2024)Stor befolkningstetthet, høy menneskelig aktivitet og miljøutfordringer gjør at det er viktig å vurdere menneskelig påvirkning i Oslofjorden samlet. Denne rapporten presenterer en tverrsektoriell fremstilling av samlet ... -
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 ... -
Temperature-associated habitat selection in a cold-water marine fish.
Freitas, Carla; Olsen, Esben Moland; Knutsen, Halvor; Albretsen, Jon; Moland, Even (Journal article; Peer reviewed, 2015-11-23) -
Time at risk: individual spatial behaviour drives fitness and marine protected area effectiveness
Villegas-Ríos, David; Claudet, Joachim; Freitas, Carla; Moland, Even; Thorbjørnsen, Susanna Huneide; Alonso-Fernández, Alexandre; Olsen, Esben Moland (Peer reviewed; Journal article, 2021)The effectiveness of Marine Protected Areas (MPAs) depends on the mobility of the populations that are the target of protection, with sedentary species likely to spend more time under protection even within small MPAs. ... -
Towards direct evidence of the effects of salmon lice (Lepeophtheirus salmonis Kr?yer) on sea trout (Salmo trutta L.) in their natural habitat: proof of concept for a new combination of methods
Serra Llinares, Rosa Maria; Freitas, Carla; Nilsen, Rune; Elvik, Kristine Marit Schrøder; Albretsen, Jon; Bøhn, Thomas; Karlsen, Ørjan; Bjørn, Pål Arne (Journal article; Peer reviewed, 2018)Studies addressing the impact of salmon lice (Lepeophtheirus salmonis Krøyer) on sea trout in their natural habitat are scarce and mostly limited to prophylaxis-based experiments. The main drawbacks with this approach are ...