Browsing Brage IMR by Author "Dahle, Geir"
Now showing items 41-60 of 68
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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. ... -
Kysttorsk eller skrei?
Dahle, Geir; Aglen, Asgeir (Chronicle, 2009-06-15) -
Lessons on Marine Protected Area Management in Northern Boreal Regions from the United States and Norway
McDermott, Susanne F.; Buhl-Mortensen, Lene; Dahle, Geir; Hart, Deborah; Haynie, Alan C.; Johannessen, Tore; Moksness, Erlend; Olsen, Esben Moland; Olsen, Erik Joel Steinar; Olson, John V.; Spencer, Paul D.; Stockhausen, William T. (Journal article, 2017)In comparison to tropical reef systems, relatively few marine protected areas (MPA’s) exist in temperate or subarctic systems (e.g., North Pacific and North Atlantic) where species diversity is lower, abundance of individual ... -
Linking dispersal connectivity to population structure and management boundaries for saithe in the Northeast Atlantic
Myksvoll, Mari Skuggedal; Devine, Jennifer Ann; Quintela, Maria; Geffen, Audrey J.; Nash, Richard David Marriott; Sandvik, Anne Dagrun; Besnier, Francois; Saha, Atal; Dahle, Geir; Jansson, Eeva; Nedreaas, Kjell Harald; Johansen, Torild (Peer reviewed; Journal article, 2021)Population connectivity is an increasingly important focal area for the understanding of how marine fish populations respond to anthropogenic pressures like climate change and fisheries. Our model species, the saithe ... -
Long-term monitoring of a brown trout (Salmo trutta) population reveals kin-associated migration patterns and contributions by resident trout to the anadromous run
Duval, Eloïse; Skaala, Øystein; Quintela, María; Dahle, Geir; Delaval, Aurelian; Wennevik, Vidar; Glover, Kevin A.; Hansen, Michael M. (Dataset, 2021)This is the final dataset used in the Duval et al. (in review) study “Long-term monitoring of a brown trout (Salmo trutta) population reveals kin-associated migration patterns and contributions by resident trout to the ... -
Long-term monitoring of a brown trout (Salmo trutta) population reveals kin-associated migration patterns and contributions by resident trout to the anadromous run
Duval, Eloïse; Skaala, Øystein; Sanchez, Maria Quintela; Dahle, Geir; Delaval, Aurelien Nicolas; Wennevik, Vidar; Glover, Kevin Alan; Hansen, Michael Möller (Peer reviewed; Journal article, 2021)In species showing partial migration, as is the case for many salmonid fishes, it is important to assess how anthropogenic pressure experienced by migrating individuals affects the total population. We focused on brown ... -
Mapping of fish spawning in the North Sea — Report of the KINO-2 project for 2018
Mateos-Rivera, Alejandro; Mozfar, Bahar; Skern-Mauritzen, Rasmus; Dahle, Geir; Wehde, Henning; Kleppe, Lisbeth; Sundby, Svein; Thorsen, Anders; Seliussen, Bjørghild Breistein; Asplin, Lars; Aguirre, Gaston Ezequiel; Isari, Stamatina; Krafft, Bjørn Arne (Rapport fra havforskningen, Research report, 2019)Increased and updated knowledge of reproductive strategies of fish is crucial to optimize the temporal and spatial planning for conducting seismic surveys; in order to reduce its potential negative ecosystems impacts. The ... -
Mapping of Fish Spawning in the North Sea; Report of the “KINO-2” Project for 2019
Mateos-Rivera, Alejandro; Mozfar, Bahar; Skern, Rasmus; Dahle, Geir; Wehde, Henning; Kleppe, Lisbeth; Sundby, Svein; Thorsen, Anders; Asplin, Lars; Isari, Stamatina; Krafft, Bjørn Arne (Rapport fra havforskningen;2020 - 2, Research report, 2020)Increased and updated knowledge of reproductive strategies of fish is crucial to optimize the temporal and spatial planning for conducting seismic surveys; in order to reduce its potential negative ecosystems impacts. The ... -
Mating competition between farmed and wild cod Gadus morhua
Skjæraasen, Jon Egil; Meager, Justin J.; Karlsen, Ørjan; Mayer, Ian; Dahle, Geir; Rudolfsen, Geir; Fernö, Anders (Journal article; Peer reviewed, 2010-08-18)Increasing numbers of hatchery-produced fish entering marine environments has caused concern over potential fitness depressions in wild populations, yet no study has addressed the likelihood of hybridisation between farmed ... -
Metode for lokalisering og verdisetting av gyteplasser i fjorder med dype terskler, åpne havbukter og sund
Espeland, Sigurd Heiberg; Albretsen, Jon; Dahle, Geir; Asplin, Lars; Olsen, Torstein; Olsen, Esben Moland; Simonsen, Jan Henrik; Bodvin, Torjan (Fisken og havet;1-2010, Research report, 2009-12-31)Marine mapping of spawning areas for coastal cod have become increasingly important. Previous mapping have considered aggregations of mature cod. In this study we also evaluate distribution of cod eggs and their passive ... -
Miljøeffekter av torskeoppdrett
Svåsand, Terje; Bergh, Øivind; Dahle, Geir; Hamre, Lars Are; Jørstad, Knut Eirik; Karlsbakk, Egil; Korsnes, Kjetil; Taranger, Geir Lasse (Havforskningstema, Working paper, 2007) -
Not that clean: aquaculture mediated translocation of cleaner fish has led to hybridization on the northern edge of the species’ range
Faust, Ellika; Jansson, Eeva; André, Carl; Halvorsen, Kim Tallaksen; Dahle, Geir; Knutsen, Halvor; Quintela, Maria; Glover, Kevin A. (Dataset, 2021-03-03)This is the final SNP dataset used in Faust et al. (2021) study "Not that clean: aquaculture mediated translocation of cleaner fish has led to hybridization on the northern edge of the species’ range" published in Evolutionary ... -
Not that clean: Aquaculture-mediated translocation of cleaner fish has led to hybridization on the northern edge of the species' range
Faust, Ellika; Jansson, Eeva; André, Carl; Halvorsen, Kim Aleksander Tallaksen; Dahle, Geir; Knutsen, Halvor; Sanchez, Maria Quintela; Glover, Kevin Alan (Peer reviewed; Journal article, 2021)Translocation and introduction of non-native organisms can have major impacts on local populations and ecosystems. Nevertheless, translocations are common practices in agri- and aquaculture. Each year, millions of wild-caught ... -
Oppdrettet torsk sin innflytelse på vill torsk og mulige løsninger for overvåkning
Dahle, Geir; Jørstad, Knut Eirik; van der Meeren, Terje (Rapport fra Havforskningen;Nr. 26 - 2011, Working paper, 2011-11)The observed presence of farmed fish on the spawning grounds is not enough to conclude that there is any interaction between farmed and wild cod. The evaluation must be based on genetic analysis of larvae sampled in the ... -
The pantophysin gene and its relationship with survival in early life stages of Atlantic cod: Pantophysin in Atlantic cod
Otterå, Håkon Magne; Johansen, Torild; Folkvord, Arild; Dahle, Geir; Bingh, Marte Kristine Solvang; Westgaard, Jon-Ivar; Glover, Kevin (Peer reviewed; Journal article, 2020)Genetic markers are widely used in fisheries management around the world. While the genetic structure and markers selected are usually based on samples from the wild, very few controlled experiments have been carried out ... -
Population structure in Atlantic cod in the eastern North Sea-Skagerrak-Kattegat: early life stage dispersal and adult migration
André, Carl; Svedang, Hendrik; Knutsen, Halvor; Dahle, Geir; Jonsson, Patrik; Ring, Anna-Karin; Sköld, Mattias; Jorde, Per Erik (Journal article; Peer reviewed, 2016-02-03) -
“Real-time” genetic monitoring of a commercial fishery on the doorstep of an MPA reveals unique insights into the interaction between coastal and migratory forms of the Atlantic cod
Johansen, Torild; Westgaard, Jon-Ivar; Seliussen, Bjørghild Breistein; Nedreaas, Kjell Harald; Dahle, Geir; Glover, Kevin; Kvalsund, Roger; Aglen, Asgeir (Journal article; Peer reviewed, 2017)With the decline of many of the world’s fisheries, increased regulation, including marine protected areas (MPA), forms an increasingly important role in promoting sustainable resource use. Here, we present a novel “real-time” ... -
Risikovurdering norsk fiskeoppdrett 2012
Asplin, Lars; Aure, Jan; Bannister, Raymond; Bjørn, Pål Arne; Boxaspen, Karin; Dahle, Geir; Ervik, Arne; Finstad, Bengt; Glover, Kevin A.; Grøsvik, Bjørn Einar; Hansen, Pia Kupka; Heino, Mikko; Vivian, Husa; Jansen, P. A.; Johnsen, Ingrid Askeland; Jørstad, Knut Eirik; Karlsbakk, Egil; Karlsen, Ørjan; Kristiansen, Tore S.; Kvamme, Bjørn Olav; Llinares, Rosa Maria Serra; Madhun, Abdullah Sami; van der Meeren, Terje; Mortensen, Stein; Morton, Craig; Nilsen, Rune; Otterå, Håkon; Patel, Sonal; Sæther, Bjørn-Steinar; Samuelsen, Ole Bent; Skaala, Øystein; Skår, Cecilie; Skilbrei, Ove; Stien, Lars Helge; Svåsand, Terje; Taranger, Geir Lasse; Uglem, Ingebrigt; Wennevik, Vidar (Fisken og havet, særnummer;2-2013, Research report, 2013-01-18)Havforskningsinstituttet har oppdatert risikovurderingen av miljøvirkninger av norsk fiskeoppdrett med ny kunnskap og nye data med fokus på matfiskoppdrett av laks – og har gjort en innledende vurdering av dyrevelferd i ... -
Screening for genetic markers to assess potential genetic impact from salmon ranching on wild stocks
Skaala, Øystein; Dahle, Geir; Taggart, John B.; Jørstad, Knut Eirik; Unneland, Laila; Karlsen, Tove; Bakke, Gunnar; Paulsen, Ole Ingar (ICES CM Documents;1991/M:14, Working paper, 1991)Genetic markers are needed to assess the potential genetic impact on wild salmon populations from ocean ranching. In 1990 spawners from four Norwegian rivers: Lone, Vosso, Dale and Onarheim were screened for genetic ... -
Scrutinizing the current management units of the greater argentine in the light of genetic structure
Quintela, Maria; Seljestad, Gaute W.; Dahle, Geir; Hallfredsson, Elvar H.; Enberg, Katja; Langbehn, Tom J.; Jansson, Eeva; Glover, Kevin Alan; Westgaard, Jon-Ivar (Dataset, 2024-03-14)Dataset for "Scrutinizing the current management units of the greater argentine in the light of genetic structure" published in ICES Journal of Marine Science, an Oxford journal. The information deposited here consists ...